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參數(shù)資料
| 型號： | 74HCT4518 |
| 廠商： | NXP Semiconductors N.V. |
| 元件分類： | 通用總線功能 |
| 英文描述： | Dual synchronous BCD counter |
| 中文描述： | 雙同步BCD碼計數(shù)器 |
| 文件頁數(shù)： | 7/7頁 |
| 文件大?。?/td> | 63K |
| 代理商： | 74HCT4518 |
December 1990
7
Philips Semiconductors
Product specification
Dual synchronous BCD counter
74HC/HCT4518
AC WAVEFORMS
PACKAGE OUTLINES
See
“74HC/HCT/HCU/HCMOS Logic Package Outlines”
.
Fig.7 Waveforms showing hold and set-up times for nCP
0
to nCP
1
and nCP
1
to nCP
0
.
(1)
HC : V
M
= 50%; V
I
= GND to V
.
HCT: V
M
= 1.3 V; V
I
= GND to 3 V.
Fig.8
Waveforms showing the minimum pulse widths for nCP
0
, nCP
1
and nMR inputs; the removal time for nMR
and the propagation delay for nMR to nQ
n
outputs and the maximum clock pulse frequency.
Conditions:
nCP
= HIGH while nCP
is triggered on a
LOW-to-HIGH transition and nCP
= LOW,
while nCP
1
is triggered on a HIGH-to-LOW transition.
(1)
HC : V
M
= 50%; V
I
= GND to V
.
HCT: V
M
= 1.3 V; V
I
= GND to 3 V.
Fig.9 Waveforms showing the propagation delays for nCP
0
, nCP
1
to nQ
n
outputs and the output transition times.
Conditions:
nCP
= HIGH while nCP
is triggered on a
LOW-to-HIGH transition and nCP
= LOW,
while nCP
1
is triggered on a HIGH-to-LOW transition.
(1)
HC : V
M
= 50%; V
I
= GND to V
.
HCT: V
M
= 1.3 V; V
I
= GND to 3 V.
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| 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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