HD74HC123AFPEL データシートの表示（PDF） - Renesas Electronics

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HD74HC123AFPEL

Dual Retriggerable Monostable Multivibrators (with Clear)

Renesas Electronics 

HD74HC123A

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

Ta = 25°C

Ta = –40 to +85°C

Item

Symbol VCC (V) Min Typ Max Min

Max Unit

Test Conditions

Propagation delay tPLH

time

2.0 — — 210 —

4.5 — 22 42

—

265 ns A, B or Clear to Q

53

6.0 — — 36

—

45

tPHL

2.0 — — 240 —

4.5 — 23 48

—

300 ns A, B or Clear to Q

60

6.0 — — 41

—

51

tPHL

2.0 — — 170 —

4.5 — 18 34

—

215 ns Clear to Q

43

6.0 — — 29

—

37

tPLH

2.0 — — 180 —

4.5 — 16 36

—

225 ns Clear to Q

45

6.0 — — 31

—

38

Output rise/fall

tTLH, tTHL 2.0

—

—

75

—

time

4.5 — 5 15

—

95 ns

19

6.0 — — 13

—

16

Pulse width

tw

2.0 150 — — 190

— ns A, B, Clear

4.5 30 6 —

38

—

6.0 26 — —

33

—

Minimum output

twQ(min)

2.0

— 1.5 —

—

pulse width

4.5 — 450 —

—

— µs Cext = 28 pF Rext = 6 kΩ

— ns

Rext = 2 kΩ

6.0 — 380 —

—

—

Output pulse width twQ

4.5 — 1.0 —

—

Input capacitance Cin

—

— 5 10

—

— ms Cext = 0.1 µF, Rext = 10 kΩ

10 pF

Caution in use: In order to prevent any malfunctions due to noise, connect a high-frequency performance capacitor

between VCC and GND, and keep the wiring between the External components and Cext, Rext/Cext

pins as short as possible.

Test Circuit

Measurement point

CL*

Note: CL includes the probe and fig capacitance.

Rev.2.00, Oct 11, 2005 page 4 of 8

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