HD74BC541A Datasheet, PDF (5/8 Pages) Hitachi Semiconductor – Octal Buffers/Line Drivers 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 _ZH
3.0
9.0
t _ZL
3.0
9.0
t _HZ
3.0
8.0
t _LZ
3.0
8.0
C_IN
3.0 (Typ)
C_O
15.0 (Typ)
HD74BC541A
Ta = –40 to +85°C
V_CC = 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 V_IN = V_CC or GND
—
pF V_O = V_CC or GND
Test circuit
V_CC
Input
Pulse
Generator
Zout = 50Ω
V_CC
G1
Output
A1
G2
Y1
C_L =
50 pF
500Ω
450Ω
50Ω
Scope
*3
OPEN
7V
Notes:
1. C_L includes probe and jig capacitance.
2. A2-Y2 to A8-Y8 are identical to above load circuit.
3. Open: t_PLH, t_PHL, t_ZH, t_HZ
7V: t_ZL, t_LZ
5