MC74LCX16245 查看數據表（PDF） - Motorola => Freescale

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MC74LCX16245

LOW–VOLTAGE CMOS 16–BIT TRANSCEIVER

Motorola => Freescale 

MOTOROLA

SEMICONDUCTOR TECHNICAL DATA

Low-Voltage CMOS

16-Bit Transceiver

With 5V-Tolerant Inputs and Outputs

(3-State, Non-Inverting)

The MC74LCX16245 is a high performance, non–inverting 16–bit

transceiver operating from a 2.7 to 3.6V supply. The device is byte

controlled. Each byte has separate Output Enable inputs which can be

tied together for full 16–bit operation. High impedance TTL compatible

inputs significantly reduce current loading to input drivers while TTL

compatible outputs offer improved switching noise performance. A VI

specification of 5.5V allows MC74LCX16245 inputs to be safely driven

from 5V devices. The MC74LCX16245 is suitable for memory address

driving and all TTL level bus oriented transceiver applications.

4.5ns maximum propagation delays support high performance

applications. Current drive capability is 24mA at both A and B ports. The

Transmit/Receive (T/Rn) inputs determine the direction of data flow

through the bi–directional transceiver. Transmit (active–HIGH) enables

data from A ports to B ports; Receive (active–LOW) enables data from B

to A ports. The Output Enable inputs (OEn), when HIGH, disable both A

and B ports by placing them in a HIGH Z condition.

• Designed for 2.7 to 3.6V VCC Operation

• 4.5ns Maximum tpd

• 5V Tolerant — Interface Capability With 5V TTL Logic

• Supports Live Insertion and Withdrawal

• IOFF Specification Guarantees High Impedance When VCC = 0V

• LVTTL Compatible

• LVCMOS Compatible

• 24mA Balanced Output Sink and Source Capability

• Near Zero Static Supply Current in All Three Logic States (20µA)

Substantially Reduces System Power Requirements

• Latchup Performance Exceeds 500mA

• ESD Performance: Human Body Model >2000V;

Machine Model >200V

MC74LCX16245

LOW–VOLTAGE

CMOS 16–BIT TRANSCEIVER

DT SUFFIX

PLASTIC TSSOP PACKAGE

CASE 1201–01

PIN NAMES

Pins

Function

OEn

T/Rn

A0–A15

B0–B15

Output Enable Inputs

Transmit/Receive Inputs

Side A Inputs or 3–State Outputs

Side B Inputs or 3–State Outputs

9/96

© Motorola, Inc. 1996

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