N74F646D 데이터 시트보기 (PDF) - Philips Electronics
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N74F646D Datasheet PDF : 16 Pages
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Philips Semiconductors
Transceivers/registers
Product specification
74F646/A/74F648/A
AC ELECTRICAL CHARACTERISTICS FOR 74F648A
SYMBOL
PARAMETER
fmax
tPLH
tPHL
tPLH
tPHL
tPLH
tPHL
tPZH
tPZL
tPZH
tPZL
tPHZ
tPLZ
tPHZ
tPLZ
Maximum clock frequency
Propagation delay
CPAB or CPBA to An or Bn
Propagation delay
An to Bn or Bn to An
Propagation delay
SAB or SBA to An or Bn
Output enable time
OE to An or Bn
Output enable time
DIR to An or Bn
Output disable time
OE to An or Bn
Output disable time
DIR to An or Bn
TEST CONDITION
Waveform 1
Waveform 1
Waveform 3
Waveform 2, 3
Waveform 5
Waveform 6
Waveform 5
Waveform 6
Waveform 5
Waveform 6
Waveform 5
Waveform 6
LIMITS
Tamb = +25°C
VCC = +5.0V
CL = 50pF, RL = 500Ω
Tamb = 0°C to +70°C
VCC = +5.0V ± 10%
CL = 50pF, RL = 500Ω
MIN TYP MAX
MIN
MAX
160 185
135
5.0
7.0
9.5
4.5
10.5
5.5
7.5 10.0
4.5
10.5
2.5
4.5
7.5
2.0
8.5
4.0
6.0
8.5
4.0
9.5
4.0
7.0
9.5
3.5
11.5
4.5
7.0
9.5
4.5
10.0
3.5
6.5 10.0
3.5
11.0
4.5
6.5 10.0
4.0
11.5
3.5
5.5
8.5
3.0
9.0
4.0
6.5
9.5
4.0
10.0
2.5
4.0
6.5
2.0
8.0
4.0
6.5
9.0
3.5
10.0
2.5
5.0
8.5
2.0
9.0
2.5
5.0
8.0
3.5
9.0
UNIT
ns
ns
ns
ns
ns
ns
ns
ns
AC SETUP REQUIREMENTS FOR 74F648A
SYMBOL
PARAMETER
tsu (H)
tsu (L)
th (H)
th (L)
tw (H)
tw (L)
Setup time, high or low
An or Bn to CPAB or CPBA
Hold time, high or low
An or Bn to CPAB or CPBA
Pulse width, high or low
CPAB or CPBA
AC WAVEFORMS
TEST CONDITION
Waveform 4
Waveform 4
Waveform 1
LIMITS
Tamb = +25°C
VCC = +5.0V
CL = 50pF, RL = 500Ω
Tamb = 0°C to +70°C
VCC = +5.0V ± 10%
CL = 50pF, RL = 500Ω
MIN TYP MAX
MIN
MAX
4.0
4.5
4.0
4.5
0
0
0
0
3.5
4.0
3.5
3.5
UNIT
ns
ns
ns
CPBA
or
CPAB
VM
1/fmax
tw(H)
VM
tPHL
tw(L)
VM
tPLH
An or Bn
VM
VM
SF00394
Waveform 1. Propagation delay for clock input to output clock
pulse width, and maximum clock frequency
An or Bn
VM
tPHL
VM
SBA or SAB
tPLH
Bn or An
VM
VM
An or Bn
SF00395
Waveform 2. Propagation delay for An to Bn or Bn to An and
SAB or SBA to An or Bn
1990 Sep 25
11
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