參數(shù)資料
型號: 74ABT899CQC
廠商: FAIRCHILD SEMICONDUCTOR CORP
元件分類: 通用總線功能
英文描述: 9-Bit Latchable Transceiver with Parity Generator/Checker
中文描述: ABT SERIES, 9-BIT REGISTERED TRANSCEIVER, TRUE OUTPUT, PQCC28
封裝: 0.450 X 0.450 INCH, MO-047, PLASTIC, LCC-28
文件頁數(shù): 7/16頁
文件大小: 123K
代理商: 74ABT899CQC
Philips Semiconductors
Product specification
74ABT899
9-bit dual latch transceiver with 8-bit parity
generator/checker (3-State)
1998 Jan 16
7
AC CHARACTERISTICS
GND = 0V; t
R
= t
F
= 2.5ns; C
L
= 50pF, R
L
= 500
LIMITS
SYMBOL
PARAMETER
WAVEFORM
T
amb
= +25
o
C
V
CC
= +5.0V
C
L
= 50pF
R
L
= 500
Typ
T
amb
= –40 to +85
o
C
V
CC
= +5.0V
±
10%
C
L
= 50pF
R
L
= 500
Min
UNIT
Min
Max
Max
t
PLH
t
PHL
t
PLH
t
PHL
t
PLH
t
PHL
t
PLH
t
PHL
t
PLH
t
PHL
t
PLH
t
PHL
t
PLH
t
PHL
t
PLH
t
PHL
t
PLH
t
PHL
t
PLH
t
PHL
t
PLH
t
PHL
t
PLH
t
PHL
t
PZH
t
PZL
t
PHZ
t
PLZ
Propagation delay
An to Bn or Bn to An
1
1.0
1.0
3.2
2.7
4.5
4.1
1.0
1.0
4.9
4.6
ns
Propagation delay
An to BPAR or Bn to APAR
2
3.0
2.5
6.0
6.4
7.5
7.9
3.0
2.5
9.0
8.8
ns
Propagation delay
An to ERRA or Bn to ERRB
3
2.8
2.8
6.0
6.7
8.0
8.5
2.8
2.8
9.1
9.3
ns
Propagation delay
APAR to BPAR or BPAR to APAR
1
2.0
1.3
4.0
3.2
5.2
4.4
2.0
1.3
5.7
5.0
ns
Propagation delay
APAR to ERRA or BPAR to ERRB
6
1.5
1.5
4.2
4.0
5.4
5.4
1.5
1.5
6.0
6.1
ns
Propagation delay
ODD/EVEN to APAR or BPAR
5
2.6
2.5
5.5
5.3
6.8
6.7
2.6
2.5
8.1
7.8
ns
Propagation delay
ODD/EVEN to ERRA or ERRB
4
2.3
2.6
5.4
5.7
6.8
7.2
2.3
2.6
7.9
8.4
ns
Propagation delay
SEL to APAR or BPAR
8
1.3
1.4
4.1
4.1
5.2
5.3
1.3
1.4
6.0
5.9
ns
Propagation delay
SEL to ERRA or ERRB
8
3.7
5.1
6.8
8.3
8.3
9.7
3.7
5.1
9.8
11.0
ns
Propagation delay
LEA to Bn or LEB to An
9
1.0
1.0
3.2
3.1
4.4
4.5
1.0
1.0
4.9
5.0
ns
Propagation delay
LEA to BPAR or LEB to APAR
9
2.0
1.7
6.8
6.3
8.3
7.9
2.0
1.7
9.7
9.0
ns
Propagation delay
LEA to ERRA or LEB to ERRB
7
2.0
2.0
6.3
7.1
8.3
9.2
2.0
2.0
9.6
10.3
ns
Output enable time
OEA to An, APAR or OEB to Bn, BPAR
11, 12
1.0
1.0
3.0
3.4
4.3
4.8
1.0
1.0
5.1
5.4
ns
Output disable time
OEA to An, APAR or OEB to Bn, BPAR
11, 12
1.0
0.5
3.4
3.0
4.7
4.2
1.0
0.5
5.5
4.7
ns
AC SETUP REQUIREMENTS
GND = 0V; t
R
= t
F
= 2.5ns; C
L
= 50pF, R
L
= 500
LIMITS
SYMBOL
PARAMETER
WAVEFORM
T
amb
= +25
o
C
V
CC
= +5.0V
C
L
= 50pF
R
L
= 500
Typ
T
amb
= –40 to +85
o
C
V
CC
= +5.0V
±
10%
C
L
= 50pF
R
L
= 500
Min
UNIT
Min
Max
Max
t
s
(H)
t
s
(L)
t
h
(H)
t
h
(L)
Setup time, High or Low
An, APAR to LEA or Bn, BPAR to LEB
10
2.0
1.5
0.4
0.0
2.0
1.5
ns
Hold time, High or Low
An, APAR to LEA or Bn, BPAR to LEB
10
1.5
1.0
0.0
–0.2
1.5
1.0
ns
t
w
(H)
Pulse width, High
LEA or LEB
10
3.0
1.9
3.0
ns
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