74ABT245CSCX_NL

更新时间： 2024-11-12 13:04:51

品牌	Logo	应用领域
飞兆/仙童 - FAIRCHILD		/
页数	文件大小	规格书
11页	121K
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数据手册

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74ABT245CSCX_NL 数据手册

September 1991

Revised November 1999

74ABT245

Octal Bi-Directional Transceiver with 3-STATE Outputs

General Description

Features

The ABT245 contains eight non-inverting bidirectional buff-

ers with 3-STATE outputs and is intended for bus-oriented

applications. Current sinking capability is 64 mA on both

the A and B ports. The Transmit/Receive (T/R) input deter-

mines the direction of data flow through the bidirectional

transceiver. Transmit (active HIGH) enables data from A

Ports to B Ports; Receive (active LOW) enables data from

B Ports to A Ports. The Output Enable input, when HIGH,

disables both A and B ports by placing them in a HIGH Z

condition.

■ Bidirectional non-inverting buffers

■ A and B output sink capability of 64 mA, source

capability of 32 mA

■ Guaranteed output skew

■ Guaranteed multiple output switching specifications

■ Output switching specified for both 50 pF and 250 pF

loads

■ Guaranteed simultaneous switching, noise level and

dynamic threshold performance

■ Guaranteed latchup protection

■ High impedance glitch-free bus loading during entire

power up and power down cycle

■ Non-destructive hot insertion capability

■ Disable time is less than enable time to avoid bus

contention

Ordering Code:

Order Number Package Number

Package Description

74ABT245CSC

74ABT245CSJ

74ABT245CMSA

74ABT245CMTC

74ABT245CPC

M20B

M20D

20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300” Wide Body

20-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide

MSA20

MTC20

N20A

20-Lead Shrink Small Outline Package (SSOP), EIAJ TYPE II, 5.3mm Wide

20-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide

20-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300” Wide

Device also available in Tape and Reel. Specify by appending suffix letter “X” to the ordering code.

Connection Diagram

Pin Descriptions

Pin Names

Description

Output Enable Input (Active LOW)

Transmit/Receive Input

T/R

A₀–A₇

B₀–B₇

Side A Inputs or 3-STATE Outputs

Side B Inputs or 3-STATE Outputs

DS010945

www.fairchildsemi.com

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