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National Semiconductor Corporation MM74HC942N MODEM, 0.3KBPS DATA, CMOS, PDIP20
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MM74HC942 Datasheets (8)

Part	ECAD Model	Manufacturer	Description	Curated	Datasheet Type	PDF
MM74HC942		National Semiconductor	MM74HC942 is a full duplex low speed modem		Original	PDF
MM74HC942C		National Semiconductor	300 Baud Modem		Scan	PDF
MM74HC942J		National Semiconductor	MM74HC942 is a full duplex low speed modem		Original	PDF
MM74HC942J		National Semiconductor	300 Baud Modem		Scan	PDF
MM74HC942J		National Semiconductor	300 Baud Modem		Scan	PDF
MM74HC942N		National Semiconductor	MM74HC942 is a full duplex low speed modem		Original	PDF
MM74HC942N		National Semiconductor	300 Baud Modem		Scan	PDF
MM74HC942N		National Semiconductor	300 Baud Modem		Scan	PDF

MM74HC942 Datasheets Context Search

Catalog Datasheet	MFG & Type	PDF	Document Tags
2025h Abstract: 2025Hz 74HC C1995 J20A MM74HC MM74HC942 MM74HC942J MM74HC942N universal telemetry modem Text: MM74HC942 300 Baud Modem General Description Features The MM74HC942 is a full duplex low speed modem It provides a 300 baud bidirectional serial interface for data communication over telephone lines and other narrow bandwidth channels It is Bell 103 compatible	Original	PDF	MM74HC942 2025h 2025Hz 74HC C1995 J20A MM74HC MM74HC942J MM74HC942N universal telemetry modem
74vhc942 Abstract: modem hybrid separates transmit 74VHC943 AN-314 C1995 MM74HC942 TP53130 AN-1016 national AN-314 national Text: 74VHC942 and 74VHC943 Design Guide 74VHC942 and 74VHC943 Design Guide National Semiconductor Application Note 1016 October 1995 Table of Contents 4 The Hybrid 5) The Receive Filter 6) The FTLC Pin 7) The Carrier Detect Circuit a) Operation b) Threshold Control	Original	PDF	74VHC942 74VHC943 74VHC943 modem hybrid separates transmit AN-314 C1995 MM74HC942 TP53130 AN-1016 national AN-314 national
Understanding 300 Baud Modem Specifications Abstract: 74vhc942 74VHC943 C1995 MM74HC942 MM74HC943 VA300 distortion factor generator AN-1017 national TMS9 Text: National Semiconductor Application Note 1017 September 1995 Understanding the specifications commonly used for 300 Baud modems presents a major hurdle for first time modem buyers Not only are some specifications subtle but few standards exist so apparently similar specifications may reflect vastly different performance Understanding the conditions under which a modem is actually tested and how	Original	PDF
MM74HC943 Abstract: AN-392 C1995 MM74HC942 VA300 Phoenix Microsystems alto Text: National Semiconductor Application Note 392 Peter Single July 1985 Understanding the specifications commonly used for 300 Baud modems presents a major hurdle for first time modem buyers Not only are some specifications subtle but few standards exist so apparently similar specifications may reflect vastly different performance Understanding the conditions under which a modem is actually tested and how	Original	PDF
FULL WAVE RECTIFIER CIRCUITS Abstract: National Hybrid 5532 lowpass filter CIRCUIT DIAGRAM AN-349 C1995 MM74HC942 SC-12 SC-15 internal diagram of external modem implementation of frequency discriminator Text: National Semiconductor Application Note 349 Anthony Chan Peter Single Daniel Deschene April 1984 INTRODUCTION The advent of low cost microprocessor based systems has created a strong demand for low cost reliable means of data communication via the dial-up telephone network The	Original	PDF
FULL WAVE RECTIFIER CIRCUITS Abstract: AN10141 74vhc942 AN-1014 C1995 MM74HC942 SC-12 SC-15 discrete phase sequence detector national TV frequency synthesizer chip Text: National Semiconductor Application Note 1014 October 1995 INTRODUCTION The advent of low cost microprocessor based systems has created a strong demand for low cost reliable means of data communication via the dial-up telephone network The most widespread means for this task is the Bell 103 type	Original	PDF
dx 8250 Abstract: national semiconductor 8250, uart TP5088 telephone circuit with dtmf tp5088 8250 uart national OUT141 UART national 8250 8250 uart uart 8250 8250 uart datasheet Text: National Semiconductor Application Note 444 Wesley Lee July 1986 A simple modem provides an inexpensive way to link your IBM PC or compatible computer with a remote system The modem which transmits data asynchronously at 300 baud is easy to build and features both autodial and autoanswer	Original	PDF
telephone circuit with dtmf tp5088 Abstract: mm58167a TP5088 74510 74vhc942 mm58167 74HC 74VHC943 C1995 MM74HC942 Text: National Semiconductor Application Note 1015 October 1995 When mated with a handful of CMOS peripheral ICs a single-chip CMOS modem device allows you to configure simple inexpensive microprocessor-telephone interface systems with autodial and autoanswer capabilities	Original	PDF	74VHC943 Bell103 74VHC942 MM74HC942 telephone circuit with dtmf tp5088 mm58167a TP5088 74510 mm58167 74HC C1995
C24PH Abstract: optimum hybrid design ,national semiconductor Linear c24-ph "Optimum Hybrid Design" R12PI c24phi Var1-M12 midcom 671-0017 AN3971 Text: National Semiconductor Application Note 397 Peter Single July 1985 Optimizing the interface between the phone line and a modem can significantly improve modem performance An increase of 6 dB in transmitted tone rejection can often be achieved Depending on the modem design this can provide	Original	PDF
AN-314 national Abstract: MM74HC943 74HC AN-314 AN-347 C1995 MM54HC MM74HC942 TP53130 h5531 Text: National Semiconductor Application Note 347 Peter Single Steve Munich April 1984 SECTIONS 1 Timing and Control a) Input and Output Thresholds b) Logic States and Control Pin Function c) The Oscillator 2) The Modulator a) Operation b) Transmit Level Adjustment	Original	PDF
Untitled Abstract: No abstract text available Text: January 1988 MM74HC942 300 Baud Modem General Description Features The MM74HC942 is a full duplex low speed modem. It pro vides a 300 baud bidirectional serial interface for data com munication over telephone lines and other narrow band width channels. It is Bell 103 compatible.	OCR Scan	PDF	MM74HC942 600ft
MM74HCM Abstract: No abstract text available Text: MM74HC942 NATIONAL SEUICOND '{LOGIC} IDE D \| bS01l22 DDbSSSb 7 \| 05J National ÆjA Semiconductor MM74HC942 300 Baud Modem General Description Features The MM74HC942 is a full duplex low speed modem. It pro vides a 300 baud bidirectional serial interface for data com	OCR Scan	PDF	bS01l22 MM74HC942 MM74HC942 MM74KC942 MM74HCM2 MM74HCM
1270Hz Abstract: National Hybrid balanced frequency discriminator 2025h power line carrier communication dc telephone hybrid 74HC MM74HC MM74HC942 MM74HC942J Text: Semiconductor January 1988 MM74HC942 300 Baud Modem General Description Features The MM74HC942 is a full duplex low speed modem. It pro vides a 300 baud bidirectional serial interface for data com munication over telephone lines and other narrow band	OCR Scan	PDF	MM74HC942 600fi 1270Hz National Hybrid balanced frequency discriminator 2025h power line carrier communication dc telephone hybrid 74HC MM74HC MM74HC942J
Untitled Abstract: No abstract text available Text: January 1988 Semiconductor MM74HC942 300 Baud Modem General Description Features The MM74HC942 is a full duplex low speed modem. It pro vides a 300 baud bidirectional serial interface for data com munication over telephone lines and other narrow band	OCR Scan	PDF	MM74HC942 phon59

triac tag 8518 Abstract: 70146 DS3654 X2864AD 7 segment display RL S5220 TC9160 la 4440 amplifier circuit diagram 300 watt philips ecg master replacement guide vtl 3829 A-C4 TCA965 equivalent Text: 1985 0 / 0 / CONTENTS VOLUME I Introduction to IC MASTER 3 Advertisers’ Index 8 Master Selection Guide Function Index I0 Part Number Index 40 Part Number Guide 300 Logo Guide 346 Application Note Directory 349 Military Parts Directory 50I Testing 506 Cross Reference	OCR Scan	PDF
74vhc942 Abstract: universal telemetry modem power line carrier communication dc 74VHC MM74HC942 D-S2256 WV5 64 Text: j^ e ^ 74VHC942 300 Baud Modem General Description Features The 74VHC942 is a full duplex tow speed modem. It pro vides a 300 baud bidirectional serial interface for data com munication over telephone lines and other narrow band width channels. It is Bell 103 compatible.	OCR Scan	PDF	74VHC942 600ft Cep-01451. 212-S066 GCH0G21 universal telemetry modem power line carrier communication dc 74VHC MM74HC942 D-S2256 WV5 64