SN74LS642

Name: SN74LS642
Brand: TI
SKU: SN74LS642
Price: 3.688 USD

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Transceptores de bus octal con salidas del colector abierto

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document-pdfAcrobat SN54LS64x, SN74LS64x Octal Bus Transceivers datasheet (Rev. A) (Inglés)

Detalles del producto

Supply voltage (min) (V)

4.75

Supply voltage (max) (V)

5.25

Number of channels

8

IOL (max) (mA)

24

IOH (max) (mA)

0.1

Input type

TTL

Output type

TTL

Features

High speed (tpd 10-50ns)

Technology family

LS

Rating

Catalog

Operating temperature range (°C)

0 to 70

Supply voltage (min) (V)

4.75

Supply voltage (max) (V)

5.25

Number of channels

8

IOL (max) (mA)

24

IOH (max) (mA)

0.1

Input type

TTL

Output type

TTL

Features

High speed (tpd 10-50ns)

Technology family

LS

Rating

Catalog

Operating temperature range (°C)

0 to 70

PDIP (N)

20

228.702 mm² 24.33 x 9.4

SOIC (DW)

20

131.84 mm² 12.8 x 10.3

SOP (NS)

20

98.28 mm² 12.6 x 7.8

SN74LS64X-1 Versions Rated at I_OL of 48 mA
Bi-directional Bus Transceivers in High-Density 20-Pin Packages
Hysteresis at Bus Inputs Improves Noise Margins
Choice of True or Inverting Logic
Choice of 3-State or Open-collector Outputs

SN74LS64X-1 Versions Rated at I_OL of 48 mA
Bi-directional Bus Transceivers in High-Density 20-Pin Packages
Hysteresis at Bus Inputs Improves Noise Margins
Choice of True or Inverting Logic
Choice of 3-State or Open-collector Outputs

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 I_OL is 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.

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 I_OL is 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.

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