HD74HCT125FPEL 查看數據表（PDF） - Renesas Electronics

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HD74HCT125FPEL

Quad. Bus Buffer Gates (with 3-state outputs)

Renesas Electronics 

HD74HCT125, HD74HCT126

Switching Characteristics

Item

Propagation delay time

Output enable time

Output disable time

Output rise/fall time

Input capacitance

Symbol VCC (V)

tPHL

4.5

tPLH

4.5

tZL

4.5

tZH

4.5

tLZ

4.5

tHZ

4.5

tTLH

4.5

tTHL

4.5

Cin

—

Ta = 25°C

Min Typ Max

— 12 20

— 12 20

— 12 30

— 12 30

— 15 30

— 15 30

— 4 12

— 4 12

— 5 10

(CL = 50 pF, Input tr = tf = 6 ns)

Ta = –40 to +85°C

Unit

Min Max

Test Conditions

—

25

ns

—

25

—

38

ns

—

38

—

38

ns

—

38

—

15

ns

—

15

—

10

pF

Test Circuit

VCC

VCC

Input

Pulse generator

ZOUT = 50 Ω

C

Output

A

Y

1 k Ω S1

CL = 50 pF

OPEN

*1 See under table

GND

Note: CL includes the probe and jig capacitance.

TEST

tPLH / tPHL

tZH / tHZ

tZL / tLZ

S1

OPEN

GND

VCC

Rev.2.00 Mar 30, 2006 page 4 of 8

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