參數(shù)資料
型號： 74F777
廠商： NXP Semiconductors N.V.
英文描述： Triple bidirectional latched bus transceiver (3-State + open collector)(三通道雙向鎖存總線收發(fā)器（三態(tài)+集電極開路）)
中文描述： 三鎖存總線雙向收發(fā)器（3態(tài)集電極開路）（三通道雙向鎖存總線收發(fā)器（三態(tài)集電極開路））
文件頁數(shù)： 7/12頁
文件大?。?/td> 98K
代理商： 74F777
Philips Semiconductors
Product specification
74F777
Triple bidirectional latched bus transceiver (3–State +
Open Collector)
May 19, 1992
7
AC ELECTRICAL CHARACTERISTICS
A PORT LIMITS
SYMBOL
PARAMETER
TEST
CONDITION
T
amb
= +25
°
C
V
CC
= +5.0V
C
L
= 30pF, R
L
= 9
T
amb
= 0
°
C to +70
°
C
V
CC
= +5.0V
±
10%
C
L
= 30pF, R
L
= 9
T
amb
= –40
°
C to
+85
°
C
V
CC
= +5.0V
±
10%
C
L
= 30pF, R
L
= 9
MIN
UNIT
MIN
TYP
MAX
MIN
MAX
MAX
t
PLH
t
PHL
Propagation delay
Bn
to An
Waveform 1
8.5
7.5
10.5
9.5
13.0
12.0
8.0
7.5
14.5
12.5
8.0
7.5
14.5
12.5
ns
t
PZH
t
PZL
Output enable time to
High or Low
OEAn
to An
Waveform 3, 4
8.0
9.0
10.0
11.0
13.0
14.0
7.0
8.0
14.5
15.5
7.0
8.0
14.5
15.5
ns
t
PHZ
t
PLZ
Output Disable time from
High or Low
OEAn
to An
Waveform 3, 4
1.5
1.5
3.0
3.0
6.0
6.0
1.0
1.0
6.5
6.0
1.0
1.0
6.5
6.0
ns
B PORT LIMITS
SYMBOL
PARAMETER
TEST
CONDITION
T
amb
= +25
°
C
V
= +5.0V
C
D
= 30pF, R
U
= 9
T
amb
= 0
°
C to +70
°
C
V
CC
= +5.0V
±
10%
C
D
= 30pF, R
U
= 9
T
amb
= –40
°
C to
+85
°
C
V
CC
= +5.0V
±
10%
C
D
= 30pF, R
U
= 9
MIN
UNIT
MIN
TYP
MAX
MIN
MAX
MAX
t
PLH
t
PHL
t
PLH
t
PHL
t
PLH
t
PHL
t
TLH
t
THL
Propagation delay
An
to Bn
Waveform 1
3.0
5.0
4.5
6.5
7.0
9.0
2.5
4.5
8.0
10.0
2.5
4.5
8.0
10.0
ns
Propagation delay
LEn
to Bn
Waveform 1
3.5
5.5
5.5
7.5
8.0
10.5
3.0
5.0
9.0
11.5
3.0
5.0
9.0
11.5
ns
Enable/disable time
OEBn
to An
Waveform 1
3.0
6.0
5.0
8.0
7.5
10.5
3.0
5.5
8.0
12.0
3.0
5.5
8.0
12.0
ns
Transition time, B port
1.3V to 1.7V, 1.7V to 1.3V
Test Circuits and
Waveforms
0.5
0.5
4.0
2.0
4.5
4.5
0.5
0.5
7.0
4.5
0.5
0.5
7.0
4.5
ns
AC SETUP REQUIREMENTS
LIMITS
SYMBOL
PARAMETER
TEST
CONDITION
T
amb
= +25
°
C
V
= +5.0V
C
D
= 30pF, R
U
= 9
T
amb
= 0
°
C to +70
°
C
V
CC
= +5.0V
±
10%
C
D
= 30pF, R
U
= 9
T
amb
= –40
°
C to
+85
°
C
V
CC
= +5.0V
±
10%
C
D
= 30pF, R
U
= 9
MIN
UNIT
MIN
TYP
MAX
MIN
MAX
MAX
t
su
(H)
t
su
(L)
t
h
(H)
t
h
(L)
t
w
(L)
Setup time
An
to LEn
Waveform 2
4.0
4.5
4.5
4.5
4.5
4.5
ns
Hold time
An
to LEn
Waveform 2
0.0
0.0
0.0
0.0
0.0
0.0
ns
LEn
pulse width, Low
Waveform 2
5.5
6.5
6.5
ns
AC WAVEFORMS
V
M
V
M
V
M
V
M
An, Bn
An, Bn, OEBn
t
PLH
t
PHL
SF00437
Waveform 1. Propagation delay, data to output and
enable/disable time OEBn to Bn
LEn
V
M
V
M
V
M
V
M
V
M
V
M
t
su
(L)
t
su
(H)
t
h
(L)
t
h
(H)
An
V
M
t
w
(L)
SF00438
Waveform 2. Data set-up and hold times and LE pulse width
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