SN74LS641-1N

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Texas Instruments

OCTAL BUS TRANSCEIVERS WITH OPEN COLLECTOR OUTPUTS

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SN74LS641-1N

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Texas Instruments

OCTAL BUS TRANSCEIVERS WITH OPEN COLLECTOR OUTPUTS

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Description Specifications Series Pricing CAD Documents

Description

General part information

74LS641 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.

Technical Specifications

Parameters and characteristics for this part

Specification	SN74LS641-1N

Current - Output Low	48 mA
Logic Type	Non-Inverting, Transceiver
Mounting Type	Through Hole
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	0.3 in
Package Name	20-PDIP, 20-DIP
Package Width	7.62 mm
Voltage - Supply (Maximum)	5.25 V
Voltage - Supply (Minimum)	4.75 V

74LS641 Series

Octal bus transceivers with open collector outputs

Part	Voltage - Supply (Maximum)	Voltage - Supply (Minimum)	Logic Type	Number of Bits per Element	Number of Elements	Package Name	Output Type	Operating Temperature (Max)	Package Length	Package Width	Current - Output Low	Mounting Type	Current - Output High
Texas Instruments SN74LS641DW	5.25 V	4.75 V	Non-Inverting Transceiver	8 bits	1	20-SOIC	Open Collector	70 °C	0.295 in	7.5 mm	24 mA	Surface Mount
Texas Instruments SN74LS641NSR	5.25 V	4.75 V	Non-Inverting Transceiver	8 bits	1	20-SO 20-SOIC	Open Collector	70 °C	0.209 in	5.3 mm	24 mA	Surface Mount
Texas Instruments SN74LS641-1DW	5.25 V	4.75 V	Non-Inverting Transceiver	8 bits	1	20-SOIC	Open Collector	70 °C	0.295 in	7.5 mm	48 mA	Surface Mount
Texas Instruments SN74LS641-1N3	5.25 V	4.75 V	Non-Inverting Transceiver	8 bits	1	20-DIP 20-PDIP	Open Collector	70 °C	0.3 in	7.62 mm	24 mA	Through Hole	100 µA
Texas Instruments SN74LS641DWR	5.25 V	4.75 V	Non-Inverting Transceiver	8 bits	1	20-SOIC	Open Collector	70 °C	0.295 in	7.5 mm	24 mA	Surface Mount
Texas Instruments SN74LS641N	5.25 V	4.75 V	Non-Inverting Transceiver	8 bits	1	20-DIP 20-PDIP	Open Collector	70 °C	0.3 in	7.62 mm	24 mA	Through Hole
Texas Instruments SN74LS641-1DWR	5.25 V	4.75 V	Non-Inverting Transceiver	8 bits	1	20-SOIC	Open Collector	70 °C	0.295 in	7.5 mm	48 mA	Surface Mount
Texas Instruments SN74LS641-1N	5.25 V	4.75 V	Non-Inverting Transceiver	8 bits	1	20-DIP 20-PDIP	Open Collector	70 °C	0.3 in	7.62 mm	48 mA	Through Hole

Pricing

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CAD

3D models and CAD resources for this part

Documents

Technical documentation and resources

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

SN74LS641-1N | Datasheet