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74F647 Datasheet, PDF (6/12 Pages) NXP Semiconductors – Octal transceiver/register, non-inverting open-collector
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Philips Semiconductors
Octal transceivers/registers (open-collector)
Product specification
74F647/74F649
AC ELECTRICAL CHARACTERISTICS
SYMBOL
PARAMETER
TEST CONDITION
fMAX
tPLH
tPHL
tPLH
tPHL
tPLH
tPHL
tPLH
tPHL
tPLH
tPHL
Maximum clock frequency
Propagation delay
CPAB to Bn or CPBA or An
Propagation delay
An to Bn or Bn to An
Propagation delay
SBA to An or SAB to Bn
Propagation delay
OE to An or Bn
Propagation delay
DIR to An or Bn
AC SETUP REQUIREMENTS
Waveform 1
Waveform 1
Waveform 2
Waveform 3
Waveform 2
Waveform 3
Waveform 2
Waveform 3
Waveform 2
Waveform 3
SYMBOL
PARAMETER
TEST CONDITION
ts(H)
ts(L)
ts(H)
ts(L)
tw(H)
tw(L)
Setup time, High or Low
An to CPBA or Bn to CPAB
Hold time, High or Low
An to CPBA or Bn to CPAB
Pulse width, High or Low
CPAB or CPBA
Waveform 4
Waveform 4
Waveform 1
LIMITS
Tamb = +25°C
VCC = +5.0V
CL = 50pF, RL = 500Ω
MIN
TYP MAX
Tamb = 0°C to +70°C
VCC = +5.0V ± 10%
CL = 50pF, RL = 500Ω
MIN
MAX
50
65
40
7.0
12.0 15.0
7.0
16.5
5.5
8.5
11.0
5.5
12.0
7.5
10.5 13.5
7.5
16.0
4.0
7.0
9.5
4.0
10.5
7.5
11.5 14.5
7.5
17.0
4.0
7.0
9.5
4.0
10.5
9.0
13.0 16.0
9.0
18.5
6.5
10.0 12.5
6.5
13.5
9.0
13.0 16.0
9.0
18.5
7.0
15.0 18.0
7.0
20.0
LIMITS
Tamb = +25°C
VCC = +5.0V
CL = 50pF, RL = 500Ω
MIN
TYP MAX
Tamb = 0°C to +70°C
VCC = +5.0V ± 10%
CL = 50pF, RL = 500Ω
MIN
MAX
4.0
5.0
4.0
5.0
0
0
0
0
4.5
4.5
6.0
6.5
AC WAVEFORMS
For all waveforms, VM = 1.5V
The shaded areas indicate when the input is permitted to change for predictable output performance.
UNIT
MHz
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
UNIT
ns
ns
ns
ns
ns
ns
CPBA
or
CPAB
An or Bn
1/fMAX
VM
VM
tW(H)
tPHL
tW(L)
VM
VM
tPLH
VM
SF01161
Waveform 1. Propagation Delay, 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, An to Bn or Bn to An and
SBA to An or SAB to Bn
1992 Feb 28
6
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