HD74BC645A Datasheet, PDF (4/8 Pages) Hitachi Semiconductor – Octal Bus Transceivers With 3 State Outputs

HD74BC645A
Switching Characteristics (C_L = 50 pF)
Item
Propagation delay time
Output enable time
Output disable time
Input capacitance
Output capacitance
Ta = 25°C
Symbol
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)
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
Rev.2.00, Jul.16.2004, page 4 of 7