U74LVC16244

Advance

CMOS IC

UNISONIC TECHNOLOGIES CO., LTD

6 of 7

www.unisonic.com.tw

QW-R126-073.a



TEST CIRCUIT AND WAVEFORMS

TEST

tPLH/tPHL

tPHZ/tPZH

tPLZ/tPZL

S1

Open

GND

VLOAD

CL

From Output

RL

VLOAD

GND

Open

S1

TEST CIRCUIT

RL

VCC

Inputs

VM

VLOAD

CL

RL

VΔ

VIN

tR, tF

1.8V±0.15V

VCC

≤2ns

VCC/2

2 x VCC

30pF

1K

Ω

0.15V

2.5V±0.2V

VCC

≤2ns

VCC/2

2 x VCC

30pF

500

Ω

0.15V

2.7V

2.7V

≤2.5ns

1.5V

6V

50pF

500

Ω

0.3V

3.3V±0.3V

2.7V

≤2.5ns

1.5V

6V

50pF

500

Ω

0.3V

PROPAGATION DELAY TIMES

VIN

VM

VOL+VΔ

VM

VOH-VΔ

0V

VOH

VLOAD/2

VOL

ENABLE AND DISABLE TIMES

Output

Waveform 1

S1 at 2×VCC

Output

Waveform 2

S1 at GND

Output

Control

tPZL

tPLZ

tPZH

tPHZ

VIN

0V

VM

PULSE DURATION

Input

tW

VM

0V

VM

VM

Timing

Input

VIN

0V

VCC

0V

VM

VM

Data

Input

SETUP AND HOLD TIMES

tSU

th

VM

VM

VIN

0V

VOH

VOL

Input

Output

tPLH

tPHL

tPLH

tPHL

Output

VM

VOH

VOL

VM

VM

VM

VM

Notes: 1. CL includes probe and jig capacitance.

2.

All input pulses are supplied by generators having the following characteristics: PRR ≤10MHz, ZO = 50Ω.