74LVT2952 查看數據表（PDF） - Philips Electronics

零件编号

产品描述 (功能)

比赛名单

74LVT2952

3.3V LVT octal registered transceiver (3-State)

Philips Electronics 

Philips Semiconductors

3.3V Octal registered transceiver (3-State)

Product specification

74LVT2952

OEAB,

OEBA

An, Bn

1.5V

1.5V

tPZH

1.5V

tPHZ

2.7V

0V

0V

2.7V

OEAB,

OEBA

1.5V

1.5V

0V

tPZL

tPLZ

3V

An, Bn

1.5V

SV00132

Waveform 3. 3-State Output Enable Time to High Level and

Output Disable Time from High Level

SV00133

Waveform 4. 3-State Output Enable Time to Low Level and

Output Disable Time from Low Level

TEST CIRCUIT AND WAVEFORMS

VCC

PULSE

GENERATOR

VIN

RT

D.U.T.

VOUT

CL

Test Circuit for 3-State Outputs

SWITCH POSITION

TEST SWITCH

tPLH/tPHL

tPLZ/tPZL

tPHZ/tPZH

Open

6V

GND

6.0V

Open

90%

RL

GND

NEGATIVE

PULSE

RL

POSITIVE

PULSE

10%

VM

10%

tW

VM

10%

tTHL (tF)

tTLH (tR)

90%

VM

90%

VM

tW

VM = 1.5V

Input Pulse Definition

90%

AMP (V)

0V

tTLH (tR)

tTHL (tF)

AMP (V)

10%

0V

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.

FAMILY

74LVT

INPUT PULSE REQUIREMENTS

Amplitude Rep. Rate tW

tR

tF

2.7V

v10MHz 500ns v2.5ns v2.5ns

SV00092

1998 Feb 19

7

Share Link: