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參數(shù)資料
Philips Semiconductors
Product specification
74F112
Dual J-K negative edge-triggered flip-flop
February 9, 1990
5
AC ELECTRICAL CHARACTERISTICS
LIMITS
SYMBOL
PARAMETER
TEST
CONDITION
VCC = +5.0V
Tamb = +25°C
CL = 50pF
RL = 500
VCC = +5.0V ± 10%
Tamb = 0°C to +70°C
CL = 50pF
RL = 500
VCC = +5.0V ± 10%
Tamb = –40°C to +85°C
CL = 50pF
RL = 500
UNIT
MIN
TYP
MAX
MIN
MAX
MIN
MAX
fMAX
Maximum clock frequency
Waveform 1
85
100
80
MHz
tPLH
tPHL
Propagation delay
CP to Qn or Qn
Waveform 1
2.0
5.0
6.5
2.0
7.5
2.0
7.5
ns
tPLH
tPHL
Propagation delay
SDn, RD to Qn or Qn
Waveform 2,3
2.0
4.5
6.5
2.0
7.5
1.5
7.5
ns
AC SETUP REQUIREMENTS
LIMITS
SYMBOL
PARAMETER
TEST
CONDITION
VCC = +5.0V
Tamb = +25°C
CL = 50pF
RL = 500
VCC = +5.0V ± 10%
Tamb = 0°C to +70°C
CL = 50pF
RL = 500
VCC = +5.0V ± 10%
Tamb = –40°C to +85°C
CL = 50pF
RL = 500
UNIT
MIN
TYP
MAX
MIN
MAX
MIN
MAX
tS(H)
tS((L)
Setup time, High or Low
Jn, Kn to CP
Waveform 1
4.0
3.5
5.0
4.0
5.0
4.0
ns
th(H)
th(L)
Hold time, High or Low
Jn, Kn to CP
Waveform 1
0.0
ns
tW(H)
tW(L)
CP Pulse width
High or Low
Waveform 1
4.5
5.0
ns
tW(L)
SDn, RD Pulse width
Low
Waveform 2,3
4.5
5.0
ns
tREC
Recovery time
SDn, RD to CP
Waveform 2,3
4.5
5.0
ns
AC WAVEFORMS
For all waveforms, VM = 1.5V.
VM
CPn
VM
ts(H)
th(H)
Jn, Kn
Qn
VM
tw(L)
fmax
ts(L)
th(L)
VM
tPLH
Qn
tw(H)
tPHL
tPLH
SF00107
The shaded areas indicate when the input is permitted to change for predictable output performance.
Waveform 1.
Propagation Delay for Data to Output, Data Setup Time and Hold Times, and Clock Pulse Width
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