Specification	SN74LS641N

Current - Output High, Low [custom]	24 mA
Current - Output High, Low [custom]	-
Mounting Type	Through Hole
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-DIP
Package / Case	7.62 mm
Package / Case	0.3 in
Supplier Device Package	20-PDIP
Voltage - Supply [Max]	5.25 V
Voltage - Supply [Min]	4.75 V

SN74LS641 Series

Octal bus transceivers with open collector outputs

Part	Output Type	Current - Output High, Low [custom]	Current - Output High, Low [custom]	Voltage - Supply [Min]	Voltage - Supply [Max]	Number of Bits per Element	Operating Temperature [Max]	Supplier Device Package	Package / Case	Package / Case [y]	Package / Case [y]	Number of Elements	Mounting Type	Package / Case	Package / Case	Current - Output High, Low [custom]
Texas Instruments SN74LS641DW	Open Collector	24 mA	-	4.75 V	5.25 V	8	70 °C	20-SOIC	20-SOIC	0.295 in	7.5 mm	1	Surface Mount
Texas Instruments SN74LS641-1DW	Open Collector	48 mA	-	4.75 V	5.25 V	8	70 °C	20-SOIC	20-SOIC	0.295 in	7.5 mm	1	Surface Mount
Texas Instruments SN74LS641-1N3	Open Collector	24 mA		4.75 V	5.25 V	8	70 °C	20-PDIP	20-DIP			1	Through Hole	7.62 mm	0.3 in	100 µA
Texas Instruments SN74LS641DWR	Open Collector	24 mA	-	4.75 V	5.25 V	8	70 °C	20-SOIC	20-SOIC	0.295 in	7.5 mm	1	Surface Mount
Texas Instruments SN74LS641N	Open Collector	24 mA	-	4.75 V	5.25 V	8	70 °C	20-PDIP	20-DIP			1	Through Hole	7.62 mm	0.3 in
Texas Instruments SN74LS641-1N	Open Collector	48 mA	-	4.75 V	5.25 V	8	70 °C	20-PDIP	20-DIP			1	Through Hole	7.62 mm	0.3 in

Pricing

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

Distributor	Package	Quantity	$

Arrow	N/A	20	$ 2.31
		40	$ 2.29
		100	$ 1.85
Digikey	Tube	1	$ 3.78
		20	$ 3.40
		40	$ 3.21
		100	$ 2.78
		148	$ 2.04
		260	$ 2.64
		500	$ 2.37
		1000	$ 2.00
		2500	$ 1.90
		5000	$ 1.83
Texas Instruments	TUBE	1	$ 3.14
		100	$ 2.75
		250	$ 1.93
		1000	$ 1.55

Description

General part information

SN74LS641 Series

These octal bus transceivers are designed for asynchronous two-way communication between data buses. The 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 enable input (G) can be used to disable the device so the buses are effectively isolated.

The -1 versions of the SN74LS640 thru SN74LS642, SN74LS644, and SN74LS645 are identical to the standard versions except that the recommended maximum IOLis increased to 48 milliamperes. There are no -1 versions of the SN54LS640 thru SN54LS642, SN54LS644, and SN54LS645.

The SN54LS640 thru SN54LS642, SN54LS644, and SN54LS645 are characterized for operation over the full military tempearture range of –55°C to 125°C. The SN74LS640 thru SN74LS642, SN74LS644, and SN74LS645 are characterized for operation from 0°C to 70°C.

Documents

Technical documentation and resources

SN54LS64x, SN74LS64x Octal Bus Transceivers datasheet (Rev. A)

Data sheet