Specification	SN74ALS641A-1DW

Current - Output High, Low [custom]	24 mA
Current - Output High, Low [custom]	-
Mounting Type	Surface Mount
Number of Bits per Element	8
Number of Elements	1
Operating Temperature [Max]	70 °C
Operating Temperature [Min]	0 °C
Output Type	Open Collector
Package / Case	20-SOIC
Package / Case [y]	0.295 in
Package / Case [y]	7.5 mm
Supplier Device Package	20-SOIC
Voltage - Supply [Max]	5.5 V
Voltage - Supply [Min]	4.5 V

SN74ALS641A-1 Series

Octal Bus Transceivers With Open-Collector Outputs

Part	Output Type	Mounting Type	Supplier Device Package	Operating Temperature [Max]	Current - Output High, Low [custom]	Current - Output High, Low [custom]	Voltage - Supply [Min]	Voltage - Supply [Max]	Number of Bits per Element	Package / Case	Package / Case [y]	Package / Case [y]	Number of Elements	Package / Case	Package / Case
Texas Instruments SN74ALS641ADWR	Open Collector	Surface Mount	20-SOIC	70 °C	24 mA	-	4.5 V	5.5 V	8	20-SOIC	0.295 in	7.5 mm	1
Texas Instruments SN74ALS641A-1NSR	Open Collector	Surface Mount	20-SO	70 °C	24 mA	-	4.5 V	5.5 V	8	20-SOIC			1	0.209 "	5.3 mm
Texas Instruments SN74ALS641ANSR	Open Collector	Surface Mount	20-SO	70 °C	24 mA	-	4.5 V	5.5 V	8	20-SOIC			1	0.209 "	5.3 mm
Texas Instruments SN74ALS641A-1DW	Open Collector	Surface Mount	20-SOIC	70 °C	24 mA	-	4.5 V	5.5 V	8	20-SOIC	0.295 in	7.5 mm	1
Texas Instruments SN74ALS641AN	Open Collector	Through Hole	20-PDIP	70 °C	24 mA	-	4.5 V	5.5 V	8	20-DIP			1	0.3 in	7.62 mm
Texas Instruments SN74ALS641A-1N	Open Collector	Through Hole	20-PDIP	70 °C	24 mA	-	4.5 V	5.5 V	8	20-DIP			1	0.3 in	7.62 mm
Texas Instruments SN74ALS641A-1DWR	Open Collector	Surface Mount	20-SOIC	70 °C	24 mA	-	4.5 V	5.5 V	8	20-SOIC	0.295 in	7.5 mm	1

Pricing

Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly

Distributor	Package	Quantity	$

Texas Instruments	TUBE	1	$ 4.19
		100	$ 3.41
		250	$ 2.68
		1000	$ 2.27

Description

General part information

SN74ALS641A-1 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.

Documents

Technical documentation and resources

Octal Bus Transceivers With Open-Collector Outputs datasheet

Data sheet