SN74ALS642A-1DWR

Obsolete

Texas Instruments

IC TXRX INVERT 5.5V 20SOIC

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SN74ALS642A-1DWR

Obsolete

Texas Instruments

IC TXRX INVERT 5.5V 20SOIC

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Description Specifications Series Pricing CAD Documents

Description

General part information

74ALS642 Series

These octal bus transceivers are designed for asynchronous two-way communication between

data buses. These devices transmit data from the A bus to the B bus or from the B bus to the A bus, depending upon the level at the direction-control (DIR) input. The output-enableinput disables the device so that the buses are effectively isolated.

The -1 versions of the SN74ALS641A and SN74ALS642A are identical to the standard versions, except that the recommended maximum IOLis increased to 48 mA in the -1 versions.

Technical Specifications

Parameters and characteristics for this part

Specification	SN74ALS642A-1DWR

Current - Output Low	24 mA
Logic Type	Inverting, Transceiver
Mounting Type	Surface Mount
Number of Bits per Element	8 bits
Number of Elements	1
Operating Temperature (Max)	70 °C
Operating Temperature (Min)	0 °C
Output Type	Open Collector
Package Length	0.295 in
Package Name	20-SOIC
Package Width	7.5 mm
Voltage - Supply (Maximum)	5.5 V
Voltage - Supply (Minimum)	4.5 V

74ALS642 Series

OCTAL BUS TRANSCEIVER O.C.

Part	Number of Bits per Element	Package Length	Package Name	Package Width	Mounting Type	Voltage - Supply (Maximum)	Voltage - Supply (Minimum)	Number of Elements	Operating Temperature (Min)	Operating Temperature (Max)	Logic Type	Current - Output Low	Output Type
Texas Instruments SN74ALS642A-1N	8 bits	0.3 in	20-DIP 20-PDIP	7.62 mm	Through Hole	5.5 V	4.5 V	1	0 °C	70 °C	Inverting Transceiver	24 mA	Open Collector
Texas Instruments SN74ALS642A-1NE4	8 bits	0.3 in	20-DIP 20-PDIP	7.62 mm	Through Hole	5.5 V	4.5 V	1	0 °C	70 °C	Inverting Transceiver	24 mA	Open Collector
Texas Instruments SN74ALS642A-1DWRG4	8 bits	0.295 in	20-SOIC	7.5 mm	Surface Mount	5.5 V	4.5 V	1	0 °C	70 °C	Inverting Transceiver	24 mA	Open Collector
Texas Instruments SN74ALS642AN
Texas Instruments SN74ALS642A-1NSR	8 bits	0.209 in	20-SO 20-SOIC	5.3 mm	Surface Mount	5.5 V	4.5 V	1	0 °C	70 °C	Inverting Transceiver	24 mA	Open Collector
Texas Instruments SN74ALS642A-1DWRE4	8 bits	0.295 in	20-SOIC	7.5 mm	Surface Mount	5.5 V	4.5 V	1	0 °C	70 °C	Inverting Transceiver	24 mA	Open Collector
Texas Instruments SN74ALS642A-1DW	8 bits	0.295 in	20-SOIC	7.5 mm	Surface Mount	5.5 V	4.5 V	1	0 °C	70 °C	Inverting Transceiver	24 mA	Open Collector
Texas Instruments SN74ALS642A-1DWR	8 bits	0.295 in	20-SOIC	7.5 mm	Surface Mount	5.5 V	4.5 V	1	0 °C	70 °C	Inverting Transceiver	24 mA	Open Collector

Pricing

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CAD

3D models and CAD resources for this part

Documents

Technical documentation and resources

SN74ALS642A-1DWR | Datasheet