tc74hct245af TOSHIBA Semiconductor CORPORATION, tc74hct245af Datasheet

tc74hct245af

Manufacturer Part Number

tc74hct245af

Description

Octal Bus Transceiver

Manufacturer

TOSHIBA Semiconductor CORPORATION

Datasheet

1.TC74HCT245AF.pdf (7 pages)

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Bonase Electronics (HK) Co., Limited

Part Number:

TC74HCT245AF

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Octal Bus Transceiver (3-state)

TRANSCEIVER fabricated with silicon gate C

LSTTL while maintaining the CMOS low power dissipation.

voltage levels.

between data busses. The direction of data transmission is

determined by the level of the DIR input.

the busses are effectively isolated.

discharge or transient excess voltage.

Features (Note 1) (Note 2)

•

Pin Assignment

The TC74HCT245A is high speed CMOS OCTAL BUS

It achieves the high speed operation similar to equivalent

Its inputs are compatible with TTL, NMOS, and CMOS output

It is intended for two-way asynchronous communication

The enable input (

All inputs are equipped with protection circuits against static

High speed: t

Low power dissipation: I

Compatible with TTL outputs: V

Wide interfacing ability: LSTTL, NMOS, CMOS

Output drive capability: 15 LSTTL loads

Symmetrical output impedance: |I

Balanced propagation delays: t

Pin and function compatible with 74LS245

Note 1: Do not apply a signal to any bus terminal when it is the output mode. Damage may result.

Note 2: All floating (high impedance) bus terminals must have their input levels fixed by means of pull up or down

resistors.

= 10 ns (typ.) at V

TC74HCT245AP,TC74HCT245AF

) can be used to disable the device so that

TOSHIBA CMOS Digital Integrated Circuit Silicon Monolithic

= 4 μA (max) at Ta = 25°C

pLH

∼ − t

= 0.8 V (max)

= 2.0 V (min)

= 5 V

| = I

pHL

MOS technology.

= 6 mA (min)

Weight

DIP20-P-300-2.54A

SOP20-P-300-1.27A

TC74HCT245AP

TC74HCT245AF

TC74HCT245AP/AF

: 1.30 g (typ.)

: 0.22 g (typ.)

2007-10-01

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tc74hct245af Summary of contents

Page 1

... Note 2: All floating (high impedance) bus terminals must have their input levels fixed by means of pull up or down resistors. Pin Assignment MOS technology 0.8 V (max 2.0 V (min (min ∼ − t pLH pHL 1 TC74HCT245AP/AF TC74HCT245AP TC74HCT245AF Weight DIP20-P-300-2.54A : 1.30 g (typ.) SOP20-P-300-1.27A : 0.22 g (typ.) 2007-10-01 ...

Page 2

IEC Logic Symbol Truth Table Inputs Function G DIR A Bus B Bus L L Output Input L H Input Output “H” or “L” Z: High impedance Absolute Maximum Ratings (Note 1) Characteristics Supply voltage range ...

Page 3

Operating Ranges (Note) Characteristics Supply voltage Input voltage Output voltage Operating temperature Input rise and fall time Note: The operating ranges are required to ensure the normal operation of the device. Unused inputs and bus inputs must be tied to ...

Page 4

AC Characteristics (input Characteristics Symbol t TLH Output transition time t THL t pLH Propagation delay time t pHL t pZL 3-state output enable R time t pZH t pLZ 3-state output disable R time t pHZ Input ...

Page 5

Package Dimensions Weight: 1.30 g (typ.) TC74HCT245AP/AF 5 2007-10-01 ...

Page 6

Package Dimensions Weight: 0.22 g (typ.) TC74HCT245AP/AF 6 2007-10-01 ...

Page 7

RESTRICTIONS ON PRODUCT USE • The information contained herein is subject to change without notice. • TOSHIBA is continually working to improve the quality and reliability of its products. Nevertheless, semiconductor devices in general can malfunction or fail due to ...

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