Please enter a valid full or partial manufacturer part number with a minimum of 3 letters or numbers

    MC10ELT25 Search Results

    SF Impression Pixel

    MC10ELT25 Price and Stock

    onsemi MC10ELT25DT

    IC TRANSLATOR UNIDIR 8TSSOP
    Distributors Part Package Stock Lead Time Min Order Qty Price Buy
    DigiKey MC10ELT25DT Tube 98
    • 1 -
    • 10 -
    • 100 $2.90643
    • 1000 $2.90643
    • 10000 $2.90643
    Buy Now
    Verical MC10ELT25DT 9,669 244
    • 1 -
    • 10 -
    • 100 -
    • 1000 $1.3875
    • 10000 $1.3875
    Buy Now
    MC10ELT25DT 1,995 244
    • 1 -
    • 10 -
    • 100 -
    • 1000 $1.3875
    • 10000 $1.3875
    Buy Now
    Rochester Electronics MC10ELT25DT 11,664 1
    • 1 $1.31
    • 10 $1.31
    • 100 $1.23
    • 1000 $1.11
    • 10000 $1.11
    Buy Now

    Rochester Electronics LLC MC10ELT25DT

    IC TRANSLATOR UNIDIR 8TSSOP
    Distributors Part Package Stock Lead Time Min Order Qty Price Buy
    DigiKey MC10ELT25DT Tube 221
    • 1 -
    • 10 -
    • 100 -
    • 1000 $1.36
    • 10000 $1.36
    Buy Now

    onsemi MC10ELT25DG

    IC TRANSLTR UNIDIRECTIONAL 8SOIC
    Distributors Part Package Stock Lead Time Min Order Qty Price Buy
    DigiKey MC10ELT25DG Tube
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 -
    Buy Now
    Newark MC10ELT25DG Bulk 1
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 -
    Buy Now
    RS MC10ELT25DG Bulk 1
    • 1 $4.6
    • 10 $4.14
    • 100 $3.91
    • 1000 $3.91
    • 10000 $3.91
    Get Quote
    Bristol Electronics MC10ELT25DG 5 1
    • 1 $5.6
    • 10 $5.6
    • 100 $5.6
    • 1000 $5.6
    • 10000 $5.6
    Buy Now
    Quest Components MC10ELT25DG 5
    • 1 $4.905
    • 10 $4.0875
    • 100 $4.0875
    • 1000 $4.0875
    • 10000 $4.0875
    Buy Now
    MC10ELT25DG 4
    • 1 $4.905
    • 10 $3.27
    • 100 $3.27
    • 1000 $3.27
    • 10000 $3.27
    Buy Now
    MC10ELT25DG 4
    • 1 $7.5
    • 10 $5
    • 100 $5
    • 1000 $5
    • 10000 $5
    Buy Now
    Rochester Electronics MC10ELT25DG 1,592 1
    • 1 $2.44
    • 10 $2.44
    • 100 $2.29
    • 1000 $2.07
    • 10000 $2.07
    Buy Now
    TME MC10ELT25DG 1
    • 1 $3
    • 10 $2.75
    • 100 $2.25
    • 1000 $2.25
    • 10000 $2.25
    Get Quote
    ComSIT USA MC10ELT25DG 98
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 -
    Get Quote

    onsemi MC10ELT25DTG

    IC TRANSLATOR UNIDIR 8TSSOP
    Distributors Part Package Stock Lead Time Min Order Qty Price Buy
    DigiKey MC10ELT25DTG Tube
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 -
    Buy Now
    Verical MC10ELT25DTG 1,934 154
    • 1 -
    • 10 -
    • 100 -
    • 1000 $2.2125
    • 10000 $2.2125
    Buy Now
    MC10ELT25DTG 1,374 154
    • 1 -
    • 10 -
    • 100 -
    • 1000 $2.2125
    • 10000 $2.2125
    Buy Now
    Arrow Electronics MC10ELT25DTG 1 99 Weeks 1
    • 1 $0.3671
    • 10 $0.3671
    • 100 $0.3671
    • 1000 $0.3671
    • 10000 $0.3671
    Buy Now
    Quest Components MC10ELT25DTG 171
    • 1 $13.131
    • 10 $13.131
    • 100 $10.213
    • 1000 $10.213
    • 10000 $10.213
    Buy Now
    Rochester Electronics MC10ELT25DTG 4,556 1
    • 1 $2.08
    • 10 $2.08
    • 100 $1.96
    • 1000 $1.77
    • 10000 $1.77
    Buy Now

    Rochester Electronics LLC MC10ELT25DTG

    IC TRANSLATOR UNIDIR 8TSSOP
    Distributors Part Package Stock Lead Time Min Order Qty Price Buy
    DigiKey MC10ELT25DTG Tube 139
    • 1 -
    • 10 -
    • 100 -
    • 1000 $2.16
    • 10000 $2.16
    Buy Now
    MC10ELT25DTG Tube 139
    • 1 -
    • 10 -
    • 100 -
    • 1000 $2.16
    • 10000 $2.16
    Buy Now

    MC10ELT25 Datasheets (35)

    Part ECAD Model Manufacturer Description Curated Datasheet Type PDF
    MC10ELT25 Motorola Differential ECL to TTL Translator Original PDF
    MC10ELT25 On Semiconductor -5V Differential ECL to TTL Translator Original PDF
    MC10ELT25 On Semiconductor -5 V Differential ECL to TTL Translator Original PDF
    MC10ELT25D Motorola Differential ECL to TTL Translator Original PDF
    MC10ELT25D On Semiconductor Differential ECL to TTL Translator Original PDF
    MC10ELT25D On Semiconductor -5 V Differential ECL to TTL Translator Original PDF
    MC10ELT25-D On Semiconductor -5V Differential ECL to TTL Translator Original PDF
    MC10ELT25D On Semiconductor Over 600 obsolete distributor catalogs now available on the Datasheet Archive - ECL Logic, Dual Differential ECL to TTL Translator, Pkg Style 8 Lead SOIC Scan PDF
    MC10ELT25DG ON Semiconductor Logic - Translators, Integrated Circuits (ICs), IC XLATOR ECL-TTL DIFF 8SOIC Original PDF
    MC10ELT25DR2 On Semiconductor Differential ECL to TTL Translator Original PDF
    MC10ELT25DR2 On Semiconductor Differential -5V ECL to TTL Translator; Package: SOIC-8 Narrow Body; No of Pins: 8; Container: Tape and Reel; Qty per Container: 2500 Original PDF
    MC10ELT25DR2G On Semiconductor BBG ECL TRNSLATR DIFF; Package: SOIC-8 Narrow Body; No of Pins: 8; Container: Tape and Reel; Qty per Container: 2500 Original PDF
    MC10ELT25DT On Semiconductor Differential -5V ECL to TTL Translator Original PDF
    MC10ELT25DT On Semiconductor Differential -5V ECL to TTL Translator Original PDF
    MC10ELT25DT On Semiconductor Differential -5V ECL to TTL Translator Original PDF
    MC10ELT25DT On Semiconductor Differential -5V ECL to TTL Translator Original PDF
    MC10ELT25DT On Semiconductor Differential -5V ECL to TTL Translator Original PDF
    MC10ELT25DT On Semiconductor Differential -5V ECL to TTL Translator Original PDF
    MC10ELT25DT On Semiconductor Differential -5V ECL to TTL Translator Original PDF
    MC10ELT25DT On Semiconductor Differential -5V ECL to TTL Translator Original PDF

    MC10ELT25 Datasheets Context Search

    Catalog Datasheet MFG & Type Document Tags PDF

    HLT25

    Abstract: MC10ELT25 ELT25 HT25 KLT25 MC100 MC100ELT25 TTL TRANSISTOR MODEL PARAMETER
    Text: MC10ELT25, MC100ELT25 −5V Differential ECL to TTL Translator The MC10ELT/100ELT25 is a differential ECL to TTL translator. Because ECL levels are used, a +5 V, -5.2 V or -4.5 V and ground are required. The small outline 8-lead package and the single gate of


    Original
    MC10ELT25, MC100ELT25 MC10ELT/100ELT25 ELT25 MC10ELT25/D HLT25 MC10ELT25 HT25 KLT25 MC100 MC100ELT25 TTL TRANSISTOR MODEL PARAMETER PDF

    klt25

    Abstract: No abstract text available
    Text: MC10ELT25, MC100ELT25 −5V Differential ECL to TTL Translator The MC10ELT/100ELT25 is a differential ECL to TTL translator. Because ECL levels are used, a +5 V, −5.2 V or −4.5 V and ground are required. The small outline 8-lead package and the single gate of


    Original
    MC10ELT25, MC100ELT25 MC10ELT/100ELT25 ELT25 MC10ELT25/D klt25 PDF

    marking 2U diode

    Abstract: marking 2U 20 diode KLT25 marking code 8 lead soic package marking codes 2u Diode 2U 26 diode marking 2u marking 84 ELT25 HLT25
    Text: MC10ELT25, MC100ELT25 -5 V Differential ECL to TTL Translator Description Features • • • MARKING DIAGRAMS* 8 8 1 SOIC−8 D SUFFIX CASE 751 1 8 8 2.6 ns Typical Propagation Delay 100 MHz FMAX CLK 24 mA TTL Outputs Flow Through Pinouts Operating Range: VCC = 4.5 V to 5.5 V with GND = 0 V;


    Original
    MC10ELT25, MC100ELT25 HLT25 506AA MC100 KLT25 MC10ELT25/D marking 2U diode marking 2U 20 diode KLT25 marking code 8 lead soic package marking codes 2u Diode 2U 26 diode marking 2u marking 84 ELT25 HLT25 PDF

    KLT25

    Abstract: HLT25 mst 720 ELT25 MC100ELT25 MC10ELT25
    Text: MC10ELT25, MC100ELT25 Differential ECL to TTL Translator The MC10ELT/100ELT25 is a differential ECL to TTL translator. Because ECL levels are used a +5V, -5.2V or -4.5V and ground are required. The small outline 8-lead SOIC package and the single gate of


    Original
    MC10ELT25, MC100ELT25 MC10ELT/100ELT25 ELT25 ELT25REE r14525 MC10ELT25/D KLT25 HLT25 mst 720 MC100ELT25 MC10ELT25 PDF

    ELT25

    Abstract: HLT25 HT25 KLT25 MC100ELT25 MC10ELT25
    Text: MC10ELT25, MC100ELT25 -5VĄDifferential ECL to TTL Translator The MC10ELT/100ELT25 is a differential ECL to TTL translator. Because ECL levels are used, a +5 V, -5.2 V or -4.5 V and ground are required. The small outline 8-lead package and the single gate of the


    Original
    MC10ELT25, MC100ELT25 MC10ELT/100ELT25 ELT25 r14525 MC10ELT25/D HLT25 HT25 KLT25 MC100ELT25 MC10ELT25 PDF

    ELT25

    Abstract: HLT25 HT25 KLT25 MC100ELT25 MC10ELT25
    Text: MC10ELT25, MC100ELT25 −5 V Differential ECL to TTL Translator Description Features • • • MARKING DIAGRAMS* 8 8 1 SOIC−8 D SUFFIX CASE 751 1 8 8 2.6 ns Typical Propagation Delay 100 MHz FMAX CLK 24 mA TTL Outputs Flow Through Pinouts Operating Range: VCC = 4.5 V to 5.5 V with GND = 0 V;


    Original
    MC10ELT25, MC100ELT25 HLT25 506AA MC100 KLT25 MC10ELT25/D ELT25 HLT25 HT25 KLT25 MC100ELT25 MC10ELT25 PDF

    ELT25

    Abstract: HLT25 HT25 KLT25 MC100ELT25 MC10ELT25 AN1404
    Text: MC10ELT25, MC100ELT25 −5V Differential ECL to TTL Translator The MC10ELT/100ELT25 is a differential ECL to TTL translator. Because ECL levels are used, a +5 V, -5.2 V or -4.5 V and ground are required. The small outline 8-lead package and the single gate of


    Original
    MC10ELT25, MC100ELT25 MC10ELT/100ELT25 ELT25 r14525 MC10ELT25/D HLT25 HT25 KLT25 MC100ELT25 MC10ELT25 AN1404 PDF

    HLT25

    Abstract: KLT25 HT25 MC100ELT25 MC10ELT25 ELT25 KT25
    Text: MC10ELT25, MC100ELT25 -5VĄDifferential ECL to TTL Translator The MC10ELT/100ELT25 is a differential ECL to TTL translator. Because ECL levels are used, a +5 V, -5.2 V or -4.5 V and ground are required. The small outline 8-lead package and the single gate of the


    Original
    MC10ELT25, MC100ELT25 MC10ELT/100ELT25 ELT25 r14525 MC10ELT25/D HLT25 KLT25 HT25 MC100ELT25 MC10ELT25 KT25 PDF

    KLT25

    Abstract: No abstract text available
    Text: MC10ELT25, MC100ELT25 −5 V Differential ECL to TTL Translator The MC10ELT/100ELT25 is a differential ECL to TTL translator. Because ECL levels are used, a +5 V, −5.2 V or −4.5 V and ground are required. The small outline 8-lead package and the single gate of


    Original
    MC10ELT25, MC100ELT25 MC10ELT/100ELT25 ELT25 MC100ELT25 AN1404 AN1405 AN1406 AN1503 KLT25 PDF

    marking 2u

    Abstract: marking 2U diode ELT25 HLT25 HT25 KLT25 MC100ELT25 MC10ELT25 soic-8 MARKING CODE 34
    Text: MC10ELT25, MC100ELT25 −5 V Differential ECL to TTL Translator Description Features • • • MARKING DIAGRAMS* 8 8 1 SOIC−8 D SUFFIX CASE 751 8 8 2.6 ns Typical Propagation Delay 100 MHz FMAX CLK 24 mA TTL Outputs Flow Through Pinouts Operating Range: VCC = 4.5 V to 5.5 V with GND = 0 V;


    Original
    MC10ELT25, MC100ELT25 HLT25 KLT25 506AA MC100 MC10ELT25/D marking 2u marking 2U diode ELT25 HLT25 HT25 KLT25 MC100ELT25 MC10ELT25 soic-8 MARKING CODE 34 PDF

    ELT25

    Abstract: HLT25 HT25 KLT25 MC100 MC100ELT25 MC10ELT25
    Text: MC10ELT25, MC100ELT25 −5 V Differential ECL to TTL Translator The MC10ELT/100ELT25 is a differential ECL to TTL translator. Because ECL levels are used, a +5 V, −5.2 V or −4.5 V and ground are required. The small outline 8-lead package and the single gate of


    Original
    MC10ELT25, MC100ELT25 MC10ELT/100ELT25 ELT25 MC10ELT25/D HLT25 HT25 KLT25 MC100 MC100ELT25 MC10ELT25 PDF

    Untitled

    Abstract: No abstract text available
    Text: MC10ELT25, MC100ELT25 -5 V Differential ECL to TTL Translator Description Features • • • MARKING DIAGRAMS* 8 8 1 SOIC−8 D SUFFIX CASE 751 1 1 TSSOP−8 DT SUFFIX CASE 948R 1 KLT25 ALYW G 1 8 8 2.6 ns Typical Propagation Delay 100 MHz FMAX CLK 24 mA TTL Outputs


    Original
    MC10ELT25, MC100ELT25 KLT25 HLT25 MC10ELT/100ELT25 MC10ELT25/D PDF

    motorola ECL

    Abstract: elt25 1D08 DL140 MC100ELT25 MC10ELT25
    Text: MOTOROLA SEMICONDUCTOR TECHNICAL DATA Differential ECL to TTL MC10ELT25 Translator MC100ELT25 The MC10ELT/100ELT25 is a differential ECL to TTL translator. Because ECL levels are used a +5V, -5.2V or -4.5V and ground are required. The small outline 8-lead SOIC package and the single gate of


    Original
    MC10ELT25 MC100ELT25 MC10ELT/100ELT25 ELT25 DL140 MC10ELT25/D* MC10ELT25/D motorola ECL 1D08 MC100ELT25 MC10ELT25 PDF

    KLT25

    Abstract: ELT25 HLT25 HT25 MC100ELT25 MC10ELT25 SOIC8 single pin out 1 MC10ELT25DG MC100
    Text: MC10ELT25, MC100ELT25 -5 V Differential ECL to TTL Translator Description Features • • • HLT25 ALYW G 1 SOIC−8 D SUFFIX CASE 751 1 8 8 2.6 ns Typical Propagation Delay 100 MHz FMAX CLK 24 mA TTL Outputs Flow Through Pinouts Operating Range: VCC = 4.5 V to 5.5 V with GND = 0 V;


    Original
    MC10ELT25, MC100ELT25 HLT25 506AA MC100 KLT25 KLT25 ELT25 HLT25 HT25 MC100ELT25 MC10ELT25 SOIC8 single pin out 1 MC10ELT25DG MC100 PDF

    E142 wafer format

    Abstract: HEL32 MR 4710 IC 300w power amplifier circuit diagram HEL05 klt22 HEL12 HEL31 HEL16 HLT22 HLT28
    Text: DL140/D Rev. 6, Jan-2001 High Performance ECL Data ECLinPS and ECLinPS Lite™ High Performance ECL Device Data ECLinPS, ECLinPS Lite, and Low Voltage ECLinPS DL140/D Rev. 6, Jan–2001  SCILLC, 2001 Previous Edition  2000 “All Rights Reserved”


    Original
    DL140/D Jan-2001 r14525 E142 wafer format HEL32 MR 4710 IC 300w power amplifier circuit diagram HEL05 klt22 HEL12 HEL31 HEL16 HLT22 HLT28 PDF

    transistor mosfet buv18a

    Abstract: M143206EVK MMBF4856 lm358 IC 68hc05sc24 telephone line interface circuit bc517 MC68B54 XC68HC705P9 MPX100ap BUV18A
    Text: Device Index and Subject Index In Brief . . . Page Device Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7.1–1 General Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7.2–1 Subject Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7.2–9


    Original
    PDF

    transistor marking code 12W SOT-23

    Abstract: MGB20N40CL laptop charging crb kp series stepper motor japan servo co 2n3773 power Amplifier circuit diagrams MJ2955 TRANSISTOR pwm brush dc motor controller sg3526 SG3526 boost controller for PWM fan tl494 tip122 tip127 mosfet audio amp
    Text: SG388/D Rev. 1, Aug-1999 ON Semiconductor PUBLICATION ORDERING INFORMATION USA/EUROPE Literature Fulfillment: Literature Distribution Center for ON Semiconductor P.O. Box 5193, Denver, Colorado 80217 USA Phone: 303-675-2175 or 800-344-3860 Toll Free USA/Canada


    Original
    SG388/D Aug-1999 r14153 transistor marking code 12W SOT-23 MGB20N40CL laptop charging crb kp series stepper motor japan servo co 2n3773 power Amplifier circuit diagrams MJ2955 TRANSISTOR pwm brush dc motor controller sg3526 SG3526 boost controller for PWM fan tl494 tip122 tip127 mosfet audio amp PDF

    schematic diagram atx Power supply 500w

    Abstract: pioneer PAL 012A 1000w inverter PURE SINE WAVE schematic diagram 600va numeric ups circuit diagrams winbond bios 25064 TLE 9180 infineon smsc MEC 1300 nu TBE schematic diagram inverter 2000w DK55 circuit diagram of luminous 600va UPS
    Text: QUICK INDEX NEW IN THIS ISSUE! Detailed Index - See Pages 3-24 Digital Signal Processors, iCoupler , iMEMS® and iSensor . . . . . 805, 2707, 2768-2769 Connectors, Cable Assemblies, IC Sockets . . . . . . . . . . . 28-568 RF Connectors . . . . . . . . . . . . . . . . . . . . . . Pages 454-455


    Original
    P462-ND P463-ND LNG295LFCP2U LNG395MFTP5U US2011) schematic diagram atx Power supply 500w pioneer PAL 012A 1000w inverter PURE SINE WAVE schematic diagram 600va numeric ups circuit diagrams winbond bios 25064 TLE 9180 infineon smsc MEC 1300 nu TBE schematic diagram inverter 2000w DK55 circuit diagram of luminous 600va UPS PDF

    CS5170

    Abstract: mps2112 MPS2112ZL1 100A 300V IGBT MC3346P CS4124YDW16 ON Semiconductor PRICE BOOK 12V to 220V smps inverter bd234 igbt ac motor speed control
    Text: SGD501/D REV 8, January 5, 2002 NORTH AMERICA SALES AND DISTRIBUTION ON Semiconductor PRICE BOOK THIS BOOK IS IN COMPUTER SORT PRODUCT CLASSIFICATION – Please see General Information Section EFFECTIVE DATE: JANUARY 5, 2002 General Information Elimination Of Ozone Depleting Chemicals . . . .


    Original
    SGD501/D Janua667 CS5170 mps2112 MPS2112ZL1 100A 300V IGBT MC3346P CS4124YDW16 ON Semiconductor PRICE BOOK 12V to 220V smps inverter bd234 igbt ac motor speed control PDF

    Arduino Mega2560

    Abstract: 13001 S 6D TRANSISTOR arduino uno rev 3 agilent optical encoder 9988 MZ 13001 TRANSISTOR arduino mega 2650 skiip 613 gb 123 ct arduino sound sensor module pic arduino nano mc34063l
    Text: ND3% BASE1 XXXX2108-0010-1-P 10 TSQ: 3001 CMS: CMS-USM TS host OP: NN COMP: 15-07-11 Hour: 13:07 TS:TS date TS time MCUS, MPUS, DSPS & DEVELOPMENT TOOLS Find Datasheets Online 8-BIT MCUS & DEVELOPMENT TOOLS 1 PSoC 3 DEVELOPMENT KITS ARDUINO MCU DEVLOPMENT PLATFORM


    Original
    CY8C38 CY8C29 incl795 12T9797 12T9804 12T9803 12T9800 12T9802 12T9801 12T9805 Arduino Mega2560 13001 S 6D TRANSISTOR arduino uno rev 3 agilent optical encoder 9988 MZ 13001 TRANSISTOR arduino mega 2650 skiip 613 gb 123 ct arduino sound sensor module pic arduino nano mc34063l PDF

    Untitled

    Abstract: No abstract text available
    Text: MOTOROLA SEMICONDUCTOR TECHNICAL DATA Differential ECL to TTL Translator MC10ELT25 MC100ELT25 The MC10ELT/100ELT25 is a differential ECL to TTL translator. Because ECL levels are used a +5V, -5.2V or -4.5V and ground are required. The small outline 8-lead SOIC package and the single gate of


    OCR Scan
    MC10ELT25 MC100ELT25 MC10ELT/100ELT25 ELT25 200mV 100ELT, 10ELT; DL140 PDF

    elt25

    Abstract: 10el ecl buffer
    Text: MOTOROLA SEMICONDUCTOR TECHNICAL DATA Differential ECL to TTL Translator MC10ELT25 MC100ELT25 The MC1OELT/100ELT25 is a differential ECL to TTL translator. Because ECL levels are used a +5V, -5.2V or -4.5V and ground are required. The small outline 8-lead SOIC package and the single gate of


    OCR Scan
    MC10ELT25, MC100ELT25 ELT25 200mV 100ELT, 10ELT; BR1330 10el ecl buffer PDF

    Untitled

    Abstract: No abstract text available
    Text: MOTOROLA SEMICONDUCTOR bftE D •_L3b72S2 □D'ìSDfiH TÛT IM0T4 MO TO RO LA SC L O G IC 1 TECHNICAL DATA Product Preview Dual Differential ECL to TTL Translator MC10ELT25 MC100ELT25 The MC10ELT/100ELT25 is a differential ECL to TTL translator Because ECL levels are used a +5V, -5.2V (or -4.5V) and ground are


    OCR Scan
    L3b72S2 MC10ELT25 MC100ELT25 MC10ELT/100ELT25 ELT25 1330/D PDF

    Untitled

    Abstract: No abstract text available
    Text: MOTOROLA SEMICONDUCTOR TECHNICAL DATA D ifferen tial ECL to TTL Translator MC10ELT25 MC100ELT25 The M C 10ELT/100ELT25 is a differential ECL to TTL translator. Because ECL levels are used a +5V, -5.2V or -4.5V and ground are required. The small outline 8-lead SOIC package and the single gate of


    OCR Scan
    MC10ELT/100ELT25 ELT25 200mV 100ELT, 10ELT; DL140 PDF