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參數(shù)資料
| 型號(hào)： | 74F779 |
| 廠商： | NXP Semiconductors N.V. |
| 元件分類： | 通用總線功能 |
| 英文描述： | 8-bit bidirectional binary counter (3-State)(8位雙向二進(jìn)制計(jì)數(shù)器（三態(tài)）) |
| 中文描述： | 8位雙向二進(jìn)制計(jì)數(shù)器（3態(tài)）（8位雙向二進(jìn)制計(jì)數(shù)器（三態(tài)）） |
| 文件頁數(shù)： | 7/12頁 |
| 文件大?。?/td> | 100K |
| 代理商： | 74F779 |
Philips Semiconductors
Product specification
74F779
8-bit bidirectional binary counter (3-State)
1989 Sep 20
7
AC SETUP REQUIREMENTS
LIMITS
SYMBOL
PARAMETER
TEST CONDITIONS
T
amb
= +25
°
C
= +5V
C
L
= 50pF, R
L
= 500
MIN
TYP
T
amb
= 0
°
C to +70
°
C
= +5V
±
10%
C
L
= 50pF, R
L
= 500
MIN
UNIT
MAX
MAX
t
s
(H)
t
s
(L)
t
h
(H)
t
h
(L)
t
s
(H)
t
s
(L)
t
h
(H)
t
h
(L)
t
s
(H)
t
s
(L)
t
h
(H)
t
h
(L)
t
w
(H)
t
w
(L)
Setup time, High or Low
I/O
n
to CP
Hold time, High or Low
I/O
n
to CP
Setup time, High or Low
CET to CP
Waveform 3
5.0
5.0
5.0
5.0
ns
ns
Waveform 3
1.0
1.0
1.0
1.0
ns
ns
Waveform 3
5.0
5.5
5.0
6.0
ns
ns
Hold time, High or Low
CET to CP
Waveform 3
0
0
0
0
ns
ns
Setup time, High or Low
Sn to CP
Waveform 3
8.0
8.0
8.5
8.5
ns
ns
Hold time, High or Low
Sn to CP
Waveform 3
0
0
0
0
ns
ns
CP Pulse width,
High or Low
Waveform 1
4.0
4.0
4.0
4.0
ns
ns
AC WAVEFORMS
For all waveforms, V
M
= 1.5V.
The shaded areas indicate when the input is permitted to change for predictable output performance.
V
M
V
M
V
M
V
M
1/f
MAX
t
W
(L)
CP
I/On
t
W
(H)
TC
V
M
V
M
SF01263
t
PHL
t
PLH
t
PLH
t
PHL
Waveform 1. Propagation Delay, Clock Input to Output,
Clock Pulse Width, and Maximum Clock Frequency
V
M
V
M
V
M
V
M
t
PLH
t
PHL
CET
TC
SF01264
Waveform 2. Propagation Delay CET Input to
Terminal Count Output
CP
V
M
V
M
V
M
V
M
t
h
(L)
t
h
(H)
Sn, I/On,
CET
SF01265
V
M
V
M
t
s
(H)
t
s
(L)
Waveform 3. Data Setup and Hold Times
V
M
V
M
V
M
t
PHZ
t
PZH
OE
V
OH
-0.3V
0V
SF01266
I/On
Waveform 4. 3-State Output Enable Time to High Level and
Output Disable Time from High Level
V
M
V
M
V
M
t
PLZ
t
PZL
V
OL
+0.3V
SF01267
3.5V
OE
I/On
Waveform 5. 3-State Output Enable Time to Low Level and
Output Disable Time from Low Level
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| 74F779 WAF | 制造商:Rochester Electronics LLC 功能描述: |
| 74F779N | 制造商:NXP Semiconductors 功能描述: |
| 74F779PC | 功能描述:計(jì)數(shù)器 IC 8-Bit Bidir Bin Ctr RoHS:否 制造商:NXP Semiconductors 計(jì)數(shù)器類型:Binary Counters 邏輯系列:74LV 位數(shù):10 計(jì)數(shù)法: 計(jì)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 |
| 74F779PCQR | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:8-Bit Bidirectional Binary Counter with TRI-STATE Outputs |
| 74F779SC | 功能描述:計(jì)數(shù)器 IC 8-Bit Bidir Bin Ctr RoHS:否 制造商:NXP Semiconductors 計(jì)數(shù)器類型:Binary Counters 邏輯系列:74LV 位數(shù):10 計(jì)數(shù)法: 計(jì)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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