HD74BC640A Datasheet, PDF (5/9 Pages) Hitachi Semiconductor – Octal Bus Transceivers With 3 State Outputs

Switching Characteristics (C_L = 50 pF)
Item
Propagation delay time
Output enable time
Output disable time
Input capacitance
Output capacitance
Symbol
Ta = 25°C
V_CC = 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
C_IN
3.0 (Typ)
C_I/O
15.0 (Typ)
HD74BC640A
Ta = –40 to +85°C
V_CC = 5.0 V ±10%
Min
Max
Unit
Test Conditions
3.0
7.0
ns An to Bn
3.0
7.0
3.0
7.0
ns Bn to An
3.0
7.0
3.0
11.0
ns G to Bn
3.0
11.0
3.0
11.0
ns G to An
3.0
11.0
3.0
10.0
ns G to Bn
3.0
10.0
3.0
10.0
ns G to An
3.0
10.0
—
pF V_IN = V_CC or GND
—
pF V_I/O = V_CC or GND
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