參數(shù)資料
型號： I74F777A
廠商： NXP SEMICONDUCTORS
元件分類： 通用總線功能
英文描述： Triple bidirectional latched bus transceiver 3-State open collector
中文描述： F/FAST SERIES, 3-BIT REGISTERED TRANSCEIVER, TRUE OUTPUT, PQCC20
封裝： PLASTIC, LCC-20
文件頁數(shù)： 7/12頁
文件大?。?/td> 98K
代理商： I74F777A
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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