74LVT244B datasheet(6/10 Pages) PHILIPS

部件名	74LVT244B

功能描述	3.3V Octal buffer/line driver 3-State

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制造商	PHILIPS [NXP Semiconductors]

网页	http://www.nxp.com

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Philips Semiconductors

Product specification

74LVT244B

3.3V Octal buffer/line driver (3-State)

1998 Nov 12

6

NOTE:

1. All typical values are at VCC = 3.3V and Tamb = 25°C.

AC WAVEFORMS

VM = 1.5V, VIN = GND to 2.7V

nAx INPUT

VM

nYx

OUTPUT

VM

tPLH

tPHL

SA00016

3.0V or VCC

whichever

is less

0V

VOH

VOL

Waveform 1. Input (nAx) to Output (nYx) Propagation Delays

OE INPUT

tPZH

tPHZ

Yn OUTPUT

VOH

Yn OUTPUT

VOL

tPZL

tPLZ

3.0V

0V

VOL + 0.3V

VOH – 0.3V

2.7V

1.5V

0V

SV00103

Waveform 2. 3-State Output Enable and Disable Times

TEST CIRCUIT AND WAVEFORMS

VM

tW

AMP (V)

NEGATIVE

PULSE

10%

90%

0V

VM

tW

AMP (V)

POSITIVE

PULSE

90%

10%

0V

tTHL (tF)

tTLH (tR)tTHL (tF)

tTLH (tR)

VM = 1.5V

Input Pulse Definition

DEFINITIONS

RL = Load resistor; see AC CHARACTERISTICS for value.

CL = Load capacitance includes jig and probe capacitance;

see AC CHARACTERISTICS for value.

RT = Termination resistance should be equal to ZOUT of

pulse generators.

INPUT PULSE REQUIREMENTS

FAMILY

74LVT

PULSE

GENERATOR

VIN

D.U.T.

VOUT

CL

VCC

RL

Test Circuit for 3-State Outputs

6.0V

RT

RL

SV00092

Open

GND

SWITCH POSITION

TEST

SWITCH

tPLH/tPHL

tPLZ/tPZL

tPHZ/tPZH

Open

6V

GND

Amplitude

Rep. Rate

tW

tR

tF

2.7V

v10MHz

500ns

v2.5ns v2.5ns

类似零件编号 - 74LVT244B

制造商	部件名	数据表	功能描述
Nexperia B.V. All right...	74LVT244B	235Kb / 12P	3.3 V octal buffer/line driver; 3-state Rev. 6 - 12 August 2021
	74LVT244BD	235Kb / 12P	3.3 V octal buffer/line driver; 3-state Rev. 6 - 12 August 2021
	74LVT244BPW	235Kb / 12P	3.3 V octal buffer/line driver; 3-state Rev. 6 - 12 August 2021

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类似说明 - 74LVT244B

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