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參數(shù)資料
| 型號： | 933795210602 |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 計數(shù)器 |
| 英文描述： | F/FAST SERIES, SYN POSITIVE EDGE TRIGGERED 8-BIT BIDIRECTIONAL BINARY COUNTER, PDIP16 |
| 封裝： | PLASTIC, SOT-38-4, DIP-16 |
| 文件頁數(shù)： | 7/8頁 |
| 文件大?。?/td> | 110K |
| 代理商： | 933795210602 |
Philips Semiconductors
Product specification
74F779
8-bit bidirectional binary counter (3-State)
1989 Sep 20
7
AC SETUP REQUIREMENTS
LIMITS
SYMBOL
PARAMETER
TEST CONDITIONS
Tamb = +25°C
VCC = +5V
CL = 50pF, RL = 500
Tamb = 0°C to +70°C
VCC = +5V ± 10%
CL = 50pF, RL = 500
UNIT
MIN
TYP
MAX
MIN
MAX
ts(H)
ts(L)
Setup time, High or Low
I/On to CP
Waveform 3
5.0
ns
th(H)
th(L)
Hold time, High or Low
I/On to CP
Waveform 3
1.0
ns
ts(H)
ts(L)
Setup time, High or Low
CET to CP
Waveform 3
5.0
5.5
5.0
6.0
ns
th(H)
th(L)
Hold time, High or Low
CET to CP
Waveform 3
0
ns
ts(H)
ts(L)
Setup time, High or Low
Sn to CP
Waveform 3
8.0
8.5
ns
th(H)
th(L)
Hold time, High or Low
Sn to CP
Waveform 3
0
ns
tw(H)
tw(L)
CP Pulse width,
High or Low
Waveform 1
4.0
ns
AC WAVEFORMS
For all waveforms, VM = 1.5V.
The shaded areas indicate when the input is permitted to change for predictable output performance.
VM
1/fMAX
tW(L)
CP
I/On
tW(H)
TC
VM
SF01263
tPHL
tPLH
tPHL
Waveform 1. Propagation Delay, Clock Input to Output,
Clock Pulse Width, and Maximum Clock Frequency
VM
tPLH
tPHL
CET
TC
SF01264
Waveform 2. Propagation Delay CET Input to
Terminal Count Output
CP
VM
th(L)
th(H)
Sn, I/On,
CET
SF01265
VM
ts(H)
ts(L)
Waveform 3. Data Setup and Hold Times
VM
tPHZ
tPZH
OE
VOH -0.3V
0V
SF01266
I/On
Waveform 4. 3-State Output Enable Time to High Level and
Output Disable Time from High Level
VM
tPLZ
tPZL
VOL +0.3V
3.5V
OE
SF01267
I/On
Waveform 5. 3-State Output Enable Time to Low Level and
Output Disable Time from Low Level
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