MC74VHCT541A データシートの表示（PDF） - Motorola => Freescale

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MC74VHCT541A

Octal Bus Buffer

Motorola => Freescale 

MOTOROLA

SEMICONDUCTOR TECHNICAL DATA

Octal Bus Buffer

The MC74VHCT541A is an advanced high speed CMOS octal bus buffer

fabricated with silicon gate CMOS technology. It achieves high speed

operation similar to equivalent Bipolar Schottky TTL while maintaining

CMOS low power dissipation.

The MC74VHCT541A is a noninverting, 3–state, buffer/line driver/line

receiver. When either OE1 or OE2 is high, the terminal outputs are in the

high impedance state.

The VHCT inputs are compatible with TTL levels. This device can be used

as a level converter for interfacing 3.3V to 5.0V, because it has full 5V CMOS

level output swings.

The VHCT541A input and output (when disabled) structures provide

protection when voltages between 0V and 5.5V are applied, regardless of

the supply voltage. These input and output structures help prevent device

destruction caused by supply voltage – input/output voltage mismatch,

battery backup, hot insertion, etc.

• High Speed: tPD = 5.4ns (Typ) at VCC = 5V

• Low Power Dissipation: ICC = 4µA (Max) at TA = 25°C

• TTL–Compatible Inputs: VIL = 0.8V; VIH = 2.0V

• Power Down Protection Provided on Inputs and Outputs

• Balanced Propagation Delays

• Designed for 4.5V to 5.5V Operating Range

• Low Noise: VOLP = 1.6V (Max)

• Pin and Function Compatible with Other Standard Logic Families

• Latchup Performance Exceeds 300mA

• ESD Performance: HBM > 2000V; Machine Model > 200V

• Chip Complexity: 134 FETs or 33.5 Equivalent Gates

DATA

INPUTS

OUTPUT

ENABLES

2

A1

3

A2

4

A3

5

A4

6

A5

7

A6

8

A7

9

A8

1

OE1

OE2 19

LOGIC DIAGRAM

18

Y1

17

Y2

16

Y3

15

Y4

14

Y5

NONINVERTING

OUTPUTS

13

Y6

12

Y7

11

Y8

MC74VHCT541A

DW SUFFIX

20–LEAD SOIC PACKAGE

CASE 751D–04

DT SUFFIX

20–LEAD TSSOP PACKAGE

CASE 948E–02

M SUFFIX

20–LEAD SOIC EIAJ PACKAGE

CASE 967–01

ORDERING INFORMATION

MC74VHCTXXXADW SOIC

MC74VHCTXXXADT TSSOP

MC74VHCTXXXAM SOIC EIAJ

PIN ASSIGNMENT

OE1 1

A1 2

A2 3

A3 4

A4 5

A5 6

A6 7

A7 8

A8 9

GND 10

20 VCC

19 OE2

18 Y1

17 Y2

16 Y3

15 Y4

14 Y5

13 Y6

12 Y7

11 Y8

FUNCTION TABLE

Inputs

OE1 OE2 A

Output Y

L

L

L

L

L

L

H

H

HXX

Z

XHX

Z

6/97

© Motorola, Inc. 1997

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