MC74VHCT245AMEL ON Semiconductor, MC74VHCT245AMEL Datasheet

MC74VHCT245AMEL

Manufacturer Part Number

MC74VHCT245AMEL

Description

Octal Bus Transceiver (TTL Compatible)

Manufacturer

ON Semiconductor

Datasheet

1.MC74VHCT245AMEL.pdf (7 pages)

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MC74VHCT245A

Octal Bus Transceiver

transceiver fabricated with silicon gate CMOS technology. It achieves

high speed operation similar to equivalent Bipolar Schottky TTL

while maintaining CMOS low power dissipation.

data buses. The direction of data transmission is determined by the

level of the DIR input. The output enable pin (OE) can be used to

disable the device, so that the buses are effectively isolated.

discharge.

be used as a level converter for interfacing 3.3 V to 5.0 V, because it

has full 5.0 V CMOS level output swings.

provide protection when voltages between 0 V and 5.5 V are applied,

regardless of the supply voltage. These input and output structures

h e l p p r e v e n t d e v i c e d e s t r u c t i o n c a u s e d b y s u p p l y

voltage−input/output voltage mismatch, battery backup, hot insertion,

etc.

Features

•

APPLICATION NOTES

•

*For additional information on our Pb−Free strategy and soldering details, please

January, 2006 − Rev. 5

download the ON Semiconductor Soldering and Mounting Techniques

Reference Manual, SOLDERRM/D.

The MC74VHCT245A is an advanced high speed CMOS octal bus

It is intended for two−way asynchronous communication between

All inputs are equipped with protection circuits against static

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

The VHCT245A input and output (when disabled) structures

damage may occur.

means of pullup or pulldown resistors or bus terminator ICs.

High Speed: t

Low Power Dissipation: I

TTL−Compatible Inputs: V

Power Down Protection Provided on Inputs and Outputs

Balanced Propagation Delays

Designed for 4.5 V to 5.5 V Operating Range

Low Noise: V

Pin and Function Compatible with Other Standard Logic Families

Latchup Performance Exceeds 300 mA

ESD Performance:

Chip Complexity: 304 FETs or 76 Equivalent Gates

Pb−Free Packages are Available*

Do not force a signal on an I/O pin when it is an active output,

All floating (high impedance) input or I/O pins must be fixed by

Human Body Model > 2000 V;

Machine Model > 200 V

OLP

= 4.9 ns (Typ) at V

= 1.6 V (Max)

= 4 mA (Max) at T

= 0.8 V; V

= 5.0 V

= 2.0 V

= 25°C

See detailed ordering and shipping information in the package

dimensions section on page 4 of this data sheet.

(Note: Microdot may be in either location)

WL, L

YY, Y

WW, W

G or G

ORDERING INFORMATION

SOIC−20WB

SUFFIX DW

CASE 751D

CASE 948E

SOEIAJ−20

SUFFIX DT

TSSOP−20

SUFFIX M

CASE 967

http://onsemi.com

= Assembly Location

= Wafer Lot

= Year

= Work Week

= Pb−Free Package

Publication Order Number:

MC74VHCT245A/D

DIAGRAMS

AWLYYWWG

74VHCT245

AWLYWWG

MARKING

VHCT245A

ALYWG

VHCT

245A

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MC74VHCT245AMEL Summary of contents

Page 1

... All floating (high impedance) input or I/O pins must be fixed by means of pullup or pulldown resistors or bus terminator ICs. *For additional information on our Pb−Free strategy and soldering details, please download the ON Semiconductor Soldering and Mounting Techniques Reference Manual, SOLDERRM/D. © Semiconductor Components Industries, LLC, 2006 January, 2006 − ...

Page 2

DATA 6 A5 PORT DIR 19 OE Figure 1. Logic Diagram FUNCTION TABLE Control Inputs OE DIR L L Data Tx from Bus B ...

Page 3

DC ELECTRICAL CHARACTERISTICS Î Î Î Î ...

Page 4

... Device MC74VHCT245ADW MC74VHCT245ADWG MC74VHCT245ADWR2 MC74VHCT245ADWRG MC74VHCT245ADT MC74VHCT245ADTG MC74VHCT245ADTR2 MC74VHCT245ADTRG MC74VHCT245AMEL MC74VHCT245AMELG †For information on tape and reel specifications, including part orientation and tape sizes, please refer to our Tape and Reel Packaging Specifications Brochure, BRD8011/D. *This package is inherently Pb−Free 1.5V t PLH 1.5V Figure 3 ...

Page 5

MC74VHCT245A DIR 19 OE Figure 7. Expanded Logic Diagram http://onsemi.com ...

Page 6

20X 0. 18X A1 K 20X REF 0.10 (0.004) 0.15 (0.006 L PIN 1 IDENT 1 0.15 ...

Page 7

... L DETAIL P VIEW American Technical Support: 800−282−9855 Toll Free USA/Canada Japan: ON Semiconductor, Japan Customer Focus Center 2−9−1 Kamimeguro, Meguro−ku, Tokyo, Japan 153−0051 Phone: 81−3−5773−3850 http://onsemi.com 7 NOTES: 1. DIMENSIONING AND TOLERANCING PER ANSI Y14.5M, 1982. ...

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