參數(shù)資料
型號: 933406750652
廠商: NXP SEMICONDUCTORS
元件分類: 計數(shù)器
英文描述: 4000/14000/40000 SERIES, ASYN NEGATIVE EDGE TRIGGERED 24-BIT UP BINARY COUNTER, PDIP16
封裝: PLASTIC, SOT-38-1, DIP-16
文件頁數(shù): 7/11頁
文件大?。?/td> 156K
代理商: 933406750652
January 1995
5
Philips Semiconductors
Product specication
24-stage frequency divider and oscillator
HEF4521B
MSI
AC CHARACTERISTICS
VSS = 0 V; Tamb =25 °C; CL = 50 pF; input transition times ≤ 20 ns
VDD
V
SYMBOL
MIN.
TYP.
MAX.
TYPICAL
EXTRAPOLATION
FORMULA
Propagation delays
I2 → O18
5
950
1900
ns
923 ns
+ (0,55 ns/pF) CL
HIGH to LOW
10
tPHL
350
700
ns
339 ns
+ (0,23 ns/pF) CL
15
220
440
ns
212 ns
+ (0,16 ns/pF) CL
5
950
1900
ns
923 ns
+ (0,55 ns/pF) CL
LOW to HIGH
10
tPLH
350
700
ns
339 ns
+ (0,23 ns/pF) CL
15
220
440
ns
212 ns
+ (0,16 ns/pF) CL
On → On + 1
5
40
80
ns
13 ns
+ (0,55 ns/pF) CL
HIGH to LOW
10
tPHL
15
30
ns
4 ns
+ (0,23 ns/pF) CL
15
10
20
ns
2 ns
+ (0,16 ns/pF) CL
5
40
80
ns
13 ns
+ (0,55 ns/pF) CL
LOW to HIGH
10
tPLH
15
30
ns
4 ns
+ (0,23 ns/pF) CL
15
10
20
ns
2 ns
+ (0,16 ns/pF) CL
MR
→ On
5
120
240
ns
93 ns
+ (0,55 ns/pF) CL
HIGH to LOW
10
tPHL
55
110
ns
44 ns
+ (0,23 ns/pF) CL
15
40
80
ns
32 ns
+ (0,16 ns/pF) CL
I1 → O1
5
90
180
ns
63 ns
+ (0,55 ns/pF) CL
HIGH to LOW
10
tPHL
35
70
ns
24 ns
+ (0,23 ns/pF) CL
15
25
50
ns
17 ns
+ (0,16 ns/pF) CL
5
60
120
ns
33 ns
+ (0,55 ns/pF) CL
LOW to HIGH
10
tPLH
30
60
ns
19 ns
+ (0,23 ns/pF) CL
15
20
40
ns
12 ns
+ (0,16 ns/pF) CL
Fig.4 Schematic diagram of clock input circuitry.
相關(guān)PDF資料
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933406850652 4000/14000/40000 SERIES, SYN POSITIVE EDGE TRIGGERED 4-BIT DOWN BINARY COUNTER, PDSO16
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