HCF4008B 查看數據表（PDF） - STMicroelectronics
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HCF4008B Datasheet PDF : 9 Pages
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HCF4008B
DYNAMIC ELECTRICAL CHARACTERISTICS (Tamb = 25°C, CL = 50pF, RL = 200KΩ, tr = tf = 20 ns)
Symbol
Parameter
VDD (V)
tPLH tPHL Propagation Delay Time
5
(SUM IN to SUM OUT)
10
15
tPLH tPHL Propagation Delay Time
5
(CARRY IN to SUM OUT)
10
15
tPLH tPHL Propagation Delay Time
5
(SUM IN to CARRY OUT)
10
15
tPLH tPHL Propagation Delay Time
5
(CARRY IN to CARRY
10
OUT)
15
tTHL tTLH Transition Time (carry out
5
or decoded out lines)
10
15
(*) Typical temperature coefficient for all VDD value is 0.3 %/°C.
Test Condition
Value (*)
Unit
Min. Typ. Max.
400 800
160 320 ns
115 230
370 740
155 310 ns
115 230
200 400
90 180 ns
65 130
100 200
50 100 ns
40 80
100 200
50 100 ns
40 80
TYPICAL APPLICATION
SPEED CHARCTERISCTICS OF A 16 BIT-ADDER
NOTES : All ”A” and ”B” input bits occur at t = 0
All sums settled at t = 345ns
CL = 50pF, Tamb = 25°C , VDD - VSS = 10V
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