HD74LVC2244AFPEL 데이터 시트보기 (PDF) - Renesas Electronics

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HD74LVC2244AFPEL

Octal Buffers / Line Drivers with 3–state Outputs

Renesas Electronics 

HD74LVC2244A

Test Circuit

VCC

Input

Pulse generator

Zout = 50 Ω

VCC

1G, 2G

Output

1Y1 to 2Y4

1A1 to 2A4

C L=

30 pF

(VCC = 1.8±0.15 V, VCC = 2.5±0.2 V)

R1 S1

R2

50 Ω Scope

OPEN

2×VCC

GND

VCC (V)

1.8±0.15

2.5±0.2

R1

1 kΩ

500 Ω

R2

950 Ω

450 Ω

Symbol

tPLH / t PHL

tZH / t HZ

tZL / tLZ

S1

OPEN

GND

2×VCC

Note: 1. CL includes probe and jig capacitance.

VCC

Input

Pulse generator

Zout = 50 Ω

VCC

1G, 2G

Output

1Y1 to 2Y4

1A1 to 2A4

C L=

50 pF

(VCC = 2.7 V, VCC = 3.3±0.3 V, VCC = 5.0±0.5 V)

500 Ω S1

450 Ω

50 Ω Scope

OPEN

*1 See

under table

GND

Symbol

tPLH / t PHL

tZH/ t HZ

tZL / t LZ

S1

Vcc=2.7V,

3.3±0.3V

Vcc=5.0±0.5V

OPEN

OPEN

GND

6V

GND

2×VCC

Note: 1. CL includes probe and jig capacitance.

Rev.3.00 Aug. 20, 2004 page 6 of 9

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