HEF4534B 데이터 시트보기 (PDF) - Philips Electronics
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HEF4534B Datasheet PDF : 10 Pages
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Philips Semiconductors
Real time 5-decade counter
Product specification
HEF4534B
LSI
Output transition times
HIGH to LOW
LOW to HIGH
VDD
V
SYMBOL MIN. TYP. MAX.
TYPICAL EXTRAPOLATION
FORMULA
5
10 tTHL
15
5
10 tTLH
15
60 120 ns
30 60 ns
20 40 ns
60 120 ns
30 60 ns
20 40 ns
10 ns + (1,0 ns/pF) CL
9 ns + (0,42 ns/pF) CL
6 ns + (0,28 ns/pF) CL
10 ns + (1,0 ns/pF) CL
9 ns + (0,42 ns/pF) CL
6 ns + (0,28 ns/pF) CL
AC CHARACTERISTICS
VSS = 0 V; Tamb = 25 °C; CL = 50 pF; input transition times ≤ 20 ns
VDD
V
SYMBOL MIN. TYP. MAX.
3-state propagation delays
Output disable times
EO → On;
EOS → OSn
HIGH
5
10
tPHZ
15
5
LOW
10
tPLZ
15
Output enable times
EO → On;
EOS → OSn
HIGH
5
10
tPZH
15
5
LOW
10
tPZL
15
Minimum clock pulse
5
width; CPA, CPS
HIGH
10
tWCPH
15
Minimum reset pulse
5
width; MR, MRsc
HIGH
10
tWMRH
15
Recovery time
5
for MR
10
tRMR
15
Recovery time
5
for MRsc
10
tRMR
15
30 60 ns
25 50 ns
20 40 ns
40 80 ns
25 50 ns
20 40 ns
35 70 ns
20 40 ns
15 30 ns
50 100 ns
25 50 ns
15 30 ns
70 35
ns
40 20
ns
30 15
ns
90 45
ns
60 30
ns
40 20
ns
120 60
ns
60 30
ns
50 25
ns
60 30
ns
40 20
ns
30 15
ns
January 1995
8
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