N74F1245D 查看數據表（PDF） - Philips Electronics

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N74F1245D

Octal transceiver (3-State)

Philips Electronics 

Philips Semiconductors

Octal transceiver (3-State)

Product specification

74F1245

AC ELECTRICAL CHARACTERISTICS

SYMBOL

PARAMETER

TEST

CONDITION

tPLH

tPHL

tPZH

tPZL

Propagation delay

An to Bn, Bn to An

Output Enable time

OE to An or Bn

tPHZ

tPLZ

Output Disable time

OE to An or Bn

AC WAVEFORMS

For all waveforms, VM = 1.5V.

Waveform

NO TAG

Waveform

NO TAG

Waveform

NO TAG

Waveform

NO TAG

Waveform

NO TAG

An, Bn

VM

tPLH

VM

tPHL

Bn, An

VM

VM

SF00202

Waveform 1. Propagation Delay for Non-Inverting Output

OE

An, Bn

VM

tPZH

VM

tPHZ

VM

VOH–0.3V

0V

SF00203

Waveform 2. 3-State Output Enable Time to High Level and

Output Disable Time from High Level

LIMITS

VCC = +5.0V

Tamb = +25°C

CL = 50pF, RL = 500Ω

MIN TYP MAX

VCC = +5.0V ± 10%

Tamb = 0°C to +70°C

CL = 50pF, RL = 500Ω

MIN

MAX

2.0

4.0

6.5

1.5

7.0

2.5

5.0

7.5

2.0

8.0

3.0

6.0

8.0

2.5

9.0

4.0

7.5 10.0

3.5

11.0

UNIT

ns

ns

2.0

5.0

8.0

1.5

4.0

7.0 10.0

4.0

9.0

11.0

ns

OE

An, Bn

VM

tPZL

VM

tPLZ

VM

VOL+0.3V

SF00204

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

Output Disable Time from Low Level

1995 Mar 01

5

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