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74F777 Datasheet, PDF (7/12 Pages) NXP Semiconductors – Triple bidirectional latched bus transceiver 3-State open collector
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Philips Semiconductors
Triple bidirectional latched bus transceiver (3–State +
Open Collector)
Product specification
74F777
AC ELECTRICAL CHARACTERISTICS
SYMBOL
PARAMETER
TEST
CONDITION
tPLH
Propagation delay
tPHL
Bn to An
Waveform 1
tPZH
tPZL
Output enable time to
High or Low
OEAn to An
Waveform 3, 4
tPHZ
tPLZ
Output Disable time from
High or Low
OEAn to An
Waveform 3, 4
SYMBOL
PARAMETER
TEST
CONDITION
tPLH
Propagation delay
tPHL
An to Bn
Waveform 1
tPLH
Propagation delay
tPHL
LEn to Bn
Waveform 1
tPLH
Enable/disable time
tPHL
OEBn to An
Waveform 1
tTLH
Transition time, B port
Test Circuits and
tTHL
1.3V to 1.7V, 1.7V to 1.3V
Waveforms
A PORT LIMITS
Tamb = +25°C
VCC = +5.0V
CL = 30pF, RL = 9Ω
Tamb = 0°C to +70°C
VCC = +5.0V ±10%
CL = 30pF, RL = 9Ω
MIN TYP MAX MIN
8.5 10.5 13.0
8.0
7.5 9.5 12.0
7.5
MAX
14.5
12.5
8.0 10.0 13.0
7.0
14.5
9.0 11.0 14.0
8.0
15.5
1.5 3.0 6.0
1.0
6.5
1.5 3.0 6.0
1.0
6.0
B PORT LIMITS
Tamb = +25°C
VCC = +5.0V
CD= 30pF, RU = 9Ω
Tamb = 0°C to +70°C
VCC = +5.0V ± 10%
CD = 30pF, RU = 9Ω
MIN TYP MAX MIN
3.0 4.5 7.0
2.5
5.0 6.5 9.0
4.5
3.5 5.5 8.0
3.0
5.5 7.5 10.5
5.0
3.0 5.0 7.5
3.0
6.0 8.0 10.5
5.5
0.5 4.0 4.5
0.5
0.5 2.0 4.5
0.5
MAX
8.0
10.0
9.0
11.5
8.0
12.0
7.0
4.5
Tamb = –40°C to
+85°C
VCC = +5.0V ±10%
CL = 30pF, RL = 9Ω
MIN
MAX
8.0
14.5
7.5
12.5
UNIT
ns
7.0
8.0
14.5
15.5
ns
1.0
1.0
6.5
6.0
ns
Tamb = –40°C to
+85°C
VCC = +5.0V ±10%
CD= 30pF, RU = 9Ω
MIN
MAX
2.5
8.0
4.5
10.0
3.0
9.0
5.0
11.5
3.0
8.0
5.5
12.0
0.5
7.0
0.5
4.5
UNIT
ns
ns
ns
ns
AC SETUP REQUIREMENTS
SYMBOL
PARAMETER
tsu (H)
tsu (L)
th (H)
th (L)
tw (L)
Setup time
An to LEn
Hold time
An to LEn
LEn pulse width, Low
TEST
CONDITION
Waveform 2
Waveform 2
Waveform 2
LIMITS
Tamb = +25°C
VCC = +5.0V
CD= 30pF, RU = 9Ω
Tamb = 0°C to +70°C
VCC = +5.0V ± 10%
CD = 30pF, RU = 9Ω
MIN TYP MAX MIN
4.0
4.5
4.5
4.5
0.0
0.0
0.0
0.0
5.5
6.5
MAX
Tamb = –40°C to
+85°C
VCC = +5.0V ±10%
CD= 30pF, RU = 9Ω
MIN
MAX
4.5
4.5
0.0
0.0
6.5
UNIT
ns
ns
ns
AC WAVEFORMS
An, Bn, OEBn
VM
tPLH
VM
tPHL
An, Bn
VM
VM
SF00437
Waveform 1. Propagation delay, data to output and
enable/disable time OEBn to Bn
An
VM
VM
tsu(L)
th(L)
LEn
VM
VM
VM
tsu(H)
tw(L)
VM
th(H)
VM
SF00438
Waveform 2. Data set-up and hold times and LE pulse width
May 19, 1992
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