HD74LS245 Datasheet, PDF(3/6 Page) Hitachi Semiconductor – OCTAL BUS TRANCEIVERS (WITH THREE STATE OUTPUTS)

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HD74LS245 Datasheet, PDF (3/6 Pages) Hitachi Semiconductor – OCTAL BUS TRANCEIVERS (WITH THREE STATE OUTPUTS)

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HD74LS245

Electrical Characteristics

(Ta = â20 to +75 Â°C)

Item

Symbol min. typ.* max. Unit

Condition

Input voltage

Hysteresis

VIH

2.0

VIL

VT+ â VTâ

0.2

Output voltage

2.4

VOH

VOL

Off-state output current

IOZH

IOZL

IIH

Input

IIL

current

A or B

DIR or G

Short-circuit output

current

IOS

â40

0.8

0.4

VCC = 4.75 V

IOH = â 3 mA VCC = 4.75 V, VIH = 2 V,

IOH = â 15 mA VIL = 0.8 V

0.4

0.5

IOL = 12 mA

IOL = 24 mA

VCC = 4.75 V, VIH = 2 V,

VIL = 0.8 V

â200

ÂµA

VO = 2.7 V

VO = 0.4 V

VCC = 5.25 V, G = 2 V

ÂµA VCC = 5.25 V, VI = 2.7 V

â0.2

mA VCC = 5.25 V, VI = 0.4 V

0.1

VCC = 5.25 V, VI = 5.5 V

0.1

VCC = 5.25 V, VI = 7 V

â225

mA VCC = 5.25 V

ICCH

Supply current**

ICCL

mA VCC = 5.25 V

ICCZ

Input clamp voltage

VIK

â1.5

VCC = 4.75 V, IIN = â18 mA

Notes: * VCC = 5 V, Ta = 25Â°C

** With all outputs open, ICC is measured with transceivers enabled in one direction only, or with all transceivers

disabled.

Switching Characteristics

(VCC = 5 V, Ta = 25Â°C)

Item

Symbol

min.

typ.

max.

Unit

Condition

Propagation delay time

tPLH

Output enable time

tPHL

tZL

CL = 45 pF, RL = 667 â¦

tZH

Output disable time

tLZ

tHZ

CL = 5 pF, RL = 667 â¦

Note: Refer to Test Circuit and Waveform of the Common Item "TTL Common Matter (Document No.: REJ27D0005-

0100)".

Rev.3.00, Jul.15.2005, page 3 of 5

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