SN74ALS639A

Name: SN74ALS639A
Brand: TI
SKU: SN74ALS639A
Price: 2.229 USD

現行

八路匯流排收發器

立即訂購

產品規格表

document-pdfAcrobat Octal Bus Transceivers datasheet (Rev. A) (英文)

SN74ALS639A

現行

產品規格表

立即訂購

產品詳細資料

Supply voltage (min) (V)

4.5

Supply voltage (max) (V)

5.5

Number of channels

8

IOL (max) (mA)

24

IOH (max) (mA)

-15

Input type

TTL

Output type

TTL

Features

High speed (tpd 10-50ns), Over-voltage tolerant inputs

Technology family

ALS

Rating

Catalog

Operating temperature range (°C)

0 to 70

Supply voltage (min) (V)

4.5

Supply voltage (max) (V)

5.5

Number of channels

8

IOL (max) (mA)

24

IOH (max) (mA)

-15

Input type

TTL

Output type

TTL

Features

High speed (tpd 10-50ns), Over-voltage tolerant inputs

Technology family

ALS

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

Bidirectional Bus Transceivers in High-Density 20-Pin Packages
Choice of True or Inverting Logic
A-Bus Outputs Are Open Collector; B-Bus Outputs Are 3 State
Package Options Include Plastic Small-Outline (DW) Packages and Standard Plastic (N) 300-mil DIPs

Bidirectional Bus Transceivers in High-Density 20-Pin Packages
Choice of True or Inverting Logic
A-Bus Outputs Are Open Collector; B-Bus Outputs Are 3 State
Package Options Include Plastic Small-Outline (DW) Packages and Standard Plastic (N) 300-mil DIPs

These octal bus transceivers are designed for asynchronous two-way communication between open-collector and 3-state buses. The devices transmit data from the A bus (open-collector) to the B bus (3 state) or from the B bus to the A bus, depending on the logic level at the direction-control (DIR) input. The output-enable () input can be used to disable the device so the buses are isolated.

The -1 version of SN74ALS638A is identical to the standard version, except that the recommended maximum I_OL is increased to 48 mA.

The SN74ALS638A, SN74ALS639A, SN74AS638A, and SN74AS639 are characterized for operation from 0°C to 70°C.

These octal bus transceivers are designed for asynchronous two-way communication between open-collector and 3-state buses. The devices transmit data from the A bus (open-collector) to the B bus (3 state) or from the B bus to the A bus, depending on the logic level at the direction-control (DIR) input. The output-enable () input can be used to disable the device so the buses are isolated.

The -1 version of SN74ALS638A is identical to the standard version, except that the recommended maximum I_OL is increased to 48 mA.

The SN74ALS638A, SN74ALS639A, SN74AS638A, and SN74AS639 are characterized for operation from 0°C to 70°C.

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