HD74BC245A 查看數據表（PDF） - Hitachi -> Renesas Electronics
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HD74BC245A Datasheet PDF : 8 Pages
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Switching Test Method (CL = 50 pF)
Item
Propagation delay time
Output enable time
Output disable time
Input capacitanse
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 PLH
3.0
6.0
t PHL
3.0
6.0
t ZH
3.0
9.0
t ZL
3.0
9.0
t ZH
3.0
9.0
t ZL
3.0
9.0
t HZ
3.0
8.0
t LZ
3.0
8.0
t HZ
3.0
8.0
t LZ
3.0
8.0
CIN
3.0(Typ)
CI/O
15.0(Typ)
HD74BC245A
Ta = –40 to 85°C
VCC = 5.0 V ±10%
Min
Max
3.0
7.0
3.0
7.0
3.0
7.0
3.0
7.0
3.0
11.0
3.0
11.0
3.0
11.0
3.0
11.0
3.0
10.0
3.0
10.0
3.0
10.0
3.0
10.0
—
—
Unit Test Conditions
ns An to Bn
ns Bn to An
ns G to Bn
ns G to An
ns G to Bn
ns G to An
pF VIN = VCC or GND
pF VI/O = VCC or GND
Test Circuit
VCC
Input
Pulse Generator
Zout = 50 Ω
VCC
G
S1
A1
Output
500 Ω
B1
CL=
450 Ω
DiR
50 pF 50 Ω Scope
*4
OPEN
7V
Notes:
1. CL includes probe and jig capacitance.
2. A2-B2, A3-B3, A4-B4, A5-B5, A6-B6, A7-B7, A8-B8 are identical to above load circuit.
3. S1: Input-Output change switch.
4. Open: tPLH, tPHL, tZH, tHZ
7 V: tZL, tLZ
5
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