74LVT2245(1998) 查看數據表（PDF） - Philips Electronics

零件编号

产品描述 (功能)

生产厂家

74LVT2245
(Rev.:1998)

3.3V Octal transceiver with 30Ω termination resistors (3-State)

Philips Electronics 

Philips Semiconductors

3.3V Octal transceiver with 30Ω

termination resistors (3-State)

Product specification

74LVT2245

AC CHARACTERISTICS

GND = 0V; tR = tF = 2.5ns; CL = 50pF; RL = 500Ω; Tamb = –40°C to +85°C.

SYMBOL

PARAMETER

WAVEFORM

tPLH

Propagation delay

tPHL

An to Bn or Bn to An

1

tPZH

tPZL

Output enable time

to High and Low level

2

tPHZ

Output disable time

tPLZ

from High and Low Level

2

NOTE:

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

LIMITS

VCC = 3.3V +0.3V

MIN

TYP

MAX

1.0

3.2

4.6

1.0

3.1

4.5

1.1

4.5

7.0

1.5

4.3

6.5

2.2

3.7

5.2

2.0

3.6

5.0

VCC = 2.7V

MAX

5.3

4.9

9.1

7.6

5.6

5.0

UNIT

ns

ns

ns

AC WAVEFORMS

VM = 1.5V, VIN = GND to 2.7V

An or Bn

INPUT

Bn or An

OUTPUT

VM

tPHL

VM

VM

tPLH

VM

SA00192

Waveform 1. Input (An or Bn) to Output (Bn or An) Propagation

Delays

OE INPUT

1.5V

tPZL

1.5V

tPLZ

2.7V

0V

3.0V

An or Bn

OUTPUT

Bn or An

OUTPUT

1.5V

tPZH

1.5V

tPHZ

VOL + 0.3V

VOL

VOH

VOH – 0.3V

0V

SV00106

Waveform 2. 3-State Output Enable and Disable Times

1998 Feb 19

5

Share Link: