HD74UH32 查看數據表（PDF） - Hitachi -> Renesas Electronics

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HD74UH32

2-input OR Gate

Hitachi -> Renesas Electronics 

HD74UH32

Ta = 25°C

Ta = –40 to

85°C

Test Conditions

Item

Output rise/fall time

Symbol Min Typ Max Min Max Unit VCC

t TLH

— 50 125 — 155 ns 2.0

t THL

— 14 25 — 31

4.5

— 12 21 — 26

6.0

See Test circuit

Propagation delay time tPLH

t PHL

— 48 100 — 125 ns 2.0 See Test circuit

— 12 20 — 25

4.5

— 9 17 — 21

6.0

Input capacitance

CIN

— 5 10 — 10 pF —

Equivalent capacitance CPD

— 10 — — —

—

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

Note: CPD is equivalent capacitance inside of the IC calculated from the operating current without load (see

test circuit). The average operating current without load is calculated according to the expression

below.

ICC(opr) = CPD• VCC• fIN + ICC

Test Circuit

VCC

Pulse

generator

Input

50 Ω

Note: Operating current test time, output is open.

Output

CL

4

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