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HD74HC237 Datasheet, PDF (5/9 Pages) Hitachi Semiconductor – 3-to-8-line Decoder/Demultiplexer with Address Latch | |||
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HD74HC237
AC Characteristics (CL = 50 pF, Input tr = tf = 6 ns)
Ta = 25°C
Ta = â40 to
+85°C
Item
Symbol
Propagation delay tPLH
time
t PHL
VCC (V)
2.0
4.5
6.0
Min Typ Max Min
â â 185 â
â 19 37 â
â â 31 â
Max Unit
230 ns
46
39
2.0
â â 145 â 180 ns
4.5
â 14 29 â 36
6.0
â â 25 â 31
2.0
â â 145 â 180 ns
4.5
â 14 29 â 36
6.0
â â 25 â 31
2.0
â â 190 â 240 ns
4.5
â 21 38 â 48
6.0
â â 32 â 41
Pulse width
tw
2.0
80 â â 100 â ns
4.5
16 8 â 20 â
6.0
14 â â 17 â
Hold time
th
2.0
5 ââ 5
â ns
4.5
5 â4 â 5
â
6.0
5 ââ 5
â
Setup time
t su
2.0
75 â â 95 â ns
4.5
15 4 â 19 â
6.0
13 â â 16 â
Output rise/fall
t TLH
time
t THL
2.0
â â 75 â 95 ns
4.5
â 5 15 â 19
6.0
â â 13 â 16
Input capacitance Cin
â
â 5 10 â 10 pF
Test Conditions
Data to Y
G2 to Y
G1 to Y
GL to Y
5
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