HD74HCT237 Datasheet, PDF (4/8 Pages) Hitachi Semiconductor – 3-to-8-line Decoder/Demultiplexer with Address Latch

HD74HCT237
Switching Characteristics
Item
Symbol V_CC (V)
Propagation delay time t_PLH
4.5
t_PHL
4.5
t_PLH
4.5
t_PHL
4.5
t_PLH
4.5
t_PHL
4.5
t_PLH
4.5
t_PHL
4.5
Pulse width
t_w
4.5
Setup time
t_su
4.5
Hold time
t_h
4.5
Output rise/fall time
t_TLH
4.5
t_THL
Input capacitance
Cin
—
Ta = 25°C
Min Typ Max
— 21 37
— 25 37
— 18 29
— 14 29
— 16 29
— 18 29
— 22 38
— 27 38
16 8 —
20 6 —
5 –1 —
— 5 15
Ta = –40 to +85°C
Min Max
—
46
—
46
—
36
—
36
—
36
—
36
—
48
—
48
20
—
25
—
5
—
—
19
— 5 10
—
10
(C_L = 50 pF, Input t_r = t_f = 6 ns)
Unit
Test Conditions
ns A, B or C to Y
ns G₂ to Y
ns G₁ to Y
ns GL to Y
ns
ns
ns
ns
pF
Test Circuit
V_CC
V_CC
Input
Pulse Generator
Zout = 50 Ω
Input
Pulse Generator
Zout = 50 Ω
A
Output
B
Y0
C
C_L = 50 pF
GL
Output
G2
Y7
G1
C_L = 50 pF
Note : 1. C_L includes probe and jig capacitance.
Rev.2.00 Mar 30, 2006 page 4 of 7