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參數(shù)資料
| 型號： | 74HCT4520 |
| 廠商： | Texas Instruments, Inc. |
| 元件分類： | 通用總線功能 |
| 英文描述： | 4-Bit Synchronous Up/Down Binary Counters 16-SOIC -40 to 85 |
| 中文描述： | 高速CMOS邏輯雙同步計數(shù)器 |
| 文件頁數(shù)： | 6/7頁 |
| 文件大小： | 55K |
| 代理商： | 74HCT4520 |
December 1990
6
Philips Semiconductors
Product specification
Dual 4-bit synchronous binary counter
74HC/HCT4520
DC CHARACTERISTICS FOR 74HCT
For the DC characteristics see
“74HC/HCT/HCU/HCMOS Logic Family Specifications”
.
Output capability: standard
I
CC
category: MSI
Note to HCT types
The value of additional quiescent supply current (
I
CC
) for a unit load of 1 is given in the family specifications.
To determine
I
CC
per input, multiply this value by the unit load coefficient shown in the table below.
AC CHARACTERISTICS FOR 74HCT
GND = 0 V; t
r
= t
f
= 6 ns; C
L
= 50 pF
INPUT
UNIT LOAD COEFFICIENT
nCP
0
, nCP
1
nMR
0.80
1.50
SYMBOL
PARAMETER
T
amb
(
°
C)
UNIT
TEST CONDITIONS
74HCT
V
CC
(V)
WAVEFORMS
+
25
40 to
+
85
40 to
+
125
min.
typ.
max. min.
max.
min.
max.
t
PHL
/ t
PLH
propagation delay
nCP
0
to nQ
n
propagation delay
nCP
1
to nQ
n
propagation delay
nMR to nQ
n
output transition time
28
53
66
80
ns
4.5
Fig.8
t
PHL
/ t
PLH
25
53
66
80
ns
4.5
Fig.8
t
PHL
16
35
44
53
ns
4.5
Fig.9
t
THL
/ t
TLH
7
15
19
22
ns
4.5
Fig.8
t
W
clock pulse width
HIGH or LOW
master reset pulse width
HIGH
removal time
nMR to nCP
0
; nCP
1
set-up time
nCP
1
to nCP
0
;
nCP
0
to nCP
1
maximum clock pulse
frequency
20
10
25
30
ns
4.5
Fig.7
t
W
20
12
25
30
ns
4.5
Fig.7
t
rem
0
8
0
0
ns
4.5
Fig.7
t
su
16
6
20
24
ns
4.5
Fig.8
f
max
30
58
24
20
MHz
4.5
Fig.7
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| 74HCT4520D | 功能描述:計數(shù)器 IC DUAL 4-BIT SYNC BINARY COUNTER RoHS:否 制造商:NXP Semiconductors 計數(shù)器類型:Binary Counters 邏輯系列:74LV 位數(shù):10 計數(shù)法: 計數(shù)順序: 工作電源電壓:1 V to 5.5 V 工作溫度范圍:- 40 C to + 125 C 封裝 / 箱體:SOT-109 封裝:Reel |
| 74HCT4520D,112 | 功能描述:計數(shù)器 IC DUAL 4-BIT SYNC RoHS:否 制造商:NXP Semiconductors 計數(shù)器類型:Binary Counters 邏輯系列:74LV 位數(shù):10 計數(shù)法: 計數(shù)順序: 工作電源電壓:1 V to 5.5 V 工作溫度范圍:- 40 C to + 125 C 封裝 / 箱體:SOT-109 封裝:Reel |
| 74HCT4520D,118 | 功能描述:計數(shù)器 IC DUAL 4-BIT SYNC RoHS:否 制造商:NXP Semiconductors 計數(shù)器類型:Binary Counters 邏輯系列:74LV 位數(shù):10 計數(shù)法: 計數(shù)順序: 工作電源電壓:1 V to 5.5 V 工作溫度范圍:- 40 C to + 125 C 封裝 / 箱體:SOT-109 封裝:Reel |
| 74HCT4520DB | 功能描述:計數(shù)器 IC DUAL 4-BIT SYNC BINARY COUNTER RoHS:否 制造商:NXP Semiconductors 計數(shù)器類型:Binary Counters 邏輯系列:74LV 位數(shù):10 計數(shù)法: 計數(shù)順序: 工作電源電壓:1 V to 5.5 V 工作溫度范圍:- 40 C to + 125 C 封裝 / 箱體:SOT-109 封裝:Reel |
| 74HCT4520DB,112 | 功能描述:計數(shù)器 IC DUAL 4-BIT SYNC RoHS:否 制造商:NXP Semiconductors 計數(shù)器類型:Binary Counters 邏輯系列:74LV 位數(shù):10 計數(shù)法: 計數(shù)順序: 工作電源電壓:1 V to 5.5 V 工作溫度范圍:- 40 C to + 125 C 封裝 / 箱體:SOT-109 封裝:Reel |
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