8002002DA datasheet(4/14 Pages) TI1

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ELECTRICAL CHARACTERISTICS

SWITCHING CHARACTERISTICS

SN54LS243, SN74LS243

SDLS145A – APRIL 1985 – REVISED JULY 2008 ............................................................................................................................................................. www.ti.com

over operating free-air temperature range (unless otherwise noted)

SN54LS243

SN74LS243

PARAMETER

TEST CONDITIONS(1)

UNIT

MIN

TYP(2)

MAX

MIN

TYP(2)

MAX

VIK

A or B

VCC = MIN,

II = –18 mA

–1.5

Hysteresis (VT+ – VT–)

VCC = MIN,

0.2

0.4

0.2

0.4

VIL = MAX,

2.4

3.1

2.4

3.1

IOH = –3 mA

VOH

VCC = MIN,

VIH = 2 V,

VIL = 0.5 V,

IOH = MAX

VIH = 2 V,

IOL = 12 mA

0.25

0.4

0.25

0.4

VCC = MIN,

VOL

VIL = MAX

IOL = 24 mA

0.35

0.5

VCC = MIN,

VIH = 2 V,

VO = 2.7 V

IOZH

µA

VIL = MAX,

VCC = MIN,

VIH = 2 V,

VO = 0.4 V

IOZL

–200

µA

VIL = MAX,

A or B

VI = 5.5 V

0.1

VCC = MAX,

GAB or GBA

VI = 7 V

0.1

IIH

VCC = MAX,

µA

VCC = MAX, VI = 0.4 V,

A inputs

–0.2

GAB and GBA at 0 V

IIL

VCC = MAX, VI = 0.4 V,

B inputs

–0.2

GAB and GBA at 4.5 V

GAB or GBA

VCC = MAX, VI = 0.4 V,

–0.2

IOS

VCC = MAX

–40

–225

–40

–225

Outputs high

Outputs low

VCC = MAX,

ICC

Outputs open,

(3)

All outputs

disabled

(1)

For conditions shown as MIN or MAX, use the appropriate value specified under "recommended operating conditions."

(2)

All typical values are at VCC = 5 V, TA = 25°C.

(3)

ICC is measured with transceivers eabled in one direction only, or with all transceivers disabled.

VCC = 5 V, TA = 25°C

SN54LS243

SN74LS243

PARAMETER

TEST CONDITIONS

UNIT

MIN

TYP

MAX

MIN

TYP

MAX

tPLH

tPHL

RL = 667 Ω,

CL = 45 pF

tPZL

tPZH

tPLZ

RL = 667 Ω,

CL = 5 pF

tPHZ

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