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SOP (NS)

SN74LS640NSR

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Texas Instruments

IC TRANSCEIVER INVERT 5.25V 20SO

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SOP (NS)

SN74LS640NSR

Active
Texas Instruments

IC TRANSCEIVER INVERT 5.25V 20SO

Find alt

Description

General part information

74LS640 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

SpecificationSN74LS640NSR
Current - Output High15 mA
Current - Output Low24 mA
Logic TypeInverting, Transceiver
Mounting TypeSurface Mount
Number of Bits per Element8 bits
Number of Elements1
Operating Temperature (Max)70 °C
Operating Temperature (Min)0 °C
Output Type3-State
Package Length0.209 in
Package Name20-SOIC, 20-SO
Package Width5.3 mm
Voltage - Supply (Maximum)5.25 V
Voltage - Supply (Minimum)4.75 V

Pricing

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CAD

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