HD74BC540A 查看數據表（PDF） - Hitachi -> Renesas Electronics
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HD74BC540A Datasheet PDF : 8 Pages
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Switching Characteristics (CL = 50 pF)
Item
Propagation delay time
Output enable time
Output disable time
Input capacitance
Output capacitance
Symbol
Ta = 25°C
VCC = 5.0 V
Min
Max
t PLH
3.0
6.0
t PHL
3.0
6.0
t ZH
3.0
9.0
t ZL
3.0
9.0
t HZ
3.0
8.0
t LZ
3.0
8.0
CIN
3.0(Typ)
CO
15.0(Typ)
HD74BC540A
Ta = –40 to +85°C
VCC = 5.0 V ±10
Min
Max
Unit
Test Conditions
3.0
7.0
ns See under figure
3.0
7.0
3.0
11.0
ns
3.0
11.0
3.0
10.0
ns
3.0
10.0
—
pF VIN = VCC or GND
—
pF VO = VCC or GND
Test circuit
VCC
Input
Pulse
Generator
Zout = 50Ω
VCC
G1
Output
A1
G2
Y1
CL =
50 pF
500Ω
450Ω
50Ω
Scope
*3
OPEN
7V
Notes:
1. CL includes probe and jig capacitance.
2. A2-Y2 to A8-Y8 are identical to above load circuit.
3. Open: tPLH, tPHL, tZH, tHZ
7V: tZL, tLZ
5
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