SCAN182245ESSMQB datasheet(2/18 Pages) NSC

部件名	SCAN182245ESSMQB

功能描述	Non-Inverting Transceiver with 25OHM Series Resistor Outputs

PDF	18 Pages

Scroll/Zoom	100%

制造商	NSC [National Semiconductor (TI)]

网页	http://www.national.com

标志

2 / 18 page

Truth Tables

Inputs

A1(0–8)

B1(0–8)

DIR1

w H

w L

x H

x L

Inputs

A2(0–8)

B2(0–8)

DIR2

w H

w L

x H

x L

H e HIGH Voltage Level

LOW Voltage Level

X e Immaterial

Z e High Impedance

Inactive-to-Active transition must occur to enable outputs upon

power-up

Functional Description

The SCAN182245A consists of two sets of nine non-invert-

ing bidirectional buffers with TRI-STATE outputs and is in-

tended for bus-oriented applications Direction pins (DIR1

and DIR2) LOW enables data from B ports to A ports when

HIGH enables data from A ports to B ports The Output

Enable pins (G1 and G2) when HIGH disables both A and B

ports by placing them in a high impedance condition

Block Diagrams

A1 B1 G1 and DIR1

TLF11657 – 2

Note

BSR stands for Boundary Scan Register

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