參數(shù)資料
型號(hào): 74ABT646CMTCX
廠商: FAIRCHILD SEMICONDUCTOR CORP
元件分類(lèi): 通用總線(xiàn)功能
英文描述: Single 8-bit Bus Transceiver
中文描述: ABT SERIES, 8-BIT REGISTERED TRANSCEIVER, TRUE OUTPUT, PDSO24
封裝: 4.40 MM, MO-153, TSSOP-24
文件頁(yè)數(shù): 5/9頁(yè)
文件大?。?/td> 97K
代理商: 74ABT646CMTCX
5
www.fairchildsemi.com
7
DC Electrical Characteristics
Note 6:
Max number of outputs defined as (n). n
1 data inputs are driven 0V to 3V. One output at LOW. Guaranteed, but not tested.
Note 7:
Max number of outputs defined as (n). n
1 data inputs are driven 0V to 3V. One output HIGH. Guaranteed, but not tested.
Note 8:
Max number of data inputs (n) switching. n
1 inputs switching 0V to 3V. Input-under-test switching: 3V to threshold (V
ILD
), 0V to threshold (V
IHD
).
Guaranteed, but not tested.
AC Electrical Characteristics
(SOIC and SSOP package)
AC Operating Requirements
Symbol
Parameter
Min
Typ
Max
Units
V
CC
Conditions
C
L
=
50 pF, R
L
=
500
T
A
=
25
°
C (Note 6)
T
A
=
25
°
C (Note 6)
T
A
=
25
°
(Note 7)
T
A
=
25
°
C (Note 8)
T
A
=
25
°
C (Note 8)
V
OLP
V
OLV
V
OHV
V
IHD
V
ILD
Quiet Output Maximum Dynamic V
OL
Quiet Output Minimum Dynamic V
OL
Minimum HIGH Level Dynamic Output Voltage
0.6
0.9
3.0
0.8
V
V
V
5.0
5.0
5.0
1.2
2.5
Minimum HIGH Level Dynamic Input Voltage
Maximum LOW Level Dynamic Input Voltage
2.2
1.8
0.8
V
V
5.0
5.0
0.5
Symbol
Parameter
T
A
=
+
25
°
C
V
CC
=
+
5.0V
C
L
=
50 pF
Typ
T
A
=
55
°
C to
+
125
°
C
V
CC
=
4.5V
5.5V
C
L
=
50 pF
Min
200
T
A
=
40
°
C to
+
85
°
C
V
CC
=
4.5V
5.5V
C
L
=
50 pF
Min
200
Units
Min
200
Max
Max
Max
f
MAX
t
PLH
t
PHL
t
PLH
t
PHL
t
PLH
t
PHL
t
PZH
t
PZL
t
PHZ
t
PLZ
t
PZH
t
PZL
t
PHZ
t
PLZ
Maximum Clock Frequency
MHz
Propagation Delay
Clock to Bus
Propagation Delay
1.7
1.7
1.5
3.0
3.4
2.6
5.6
5.6
4.8
2.2
1.7
1.5
8.8
8.8
7.9
1.7
1.7
1.5
5.6
5.6
4.8
ns
ns
Bus to Bus
Propagation Delay
SBA or SAB to A
n
to B
n
Enable Time
1.5
1.5
1.5
3.0
3.0
3.4
4.8
5.9
5.9
1.5
1.5
1.5
7.9
8.1
8.9
1.5
1.5
1.5
4.8
5.9
5.9
ns
1.5
1.5
3.2
3.5
6.3
6.3
1.0
1.9
7.3
8.8
1.5
1.5
6.3
6.3
ns
OE to A
n
or B
n
Disable Time
1.5
1.5
3.7
3.2
6.0
6.0
1.5
1.5
9.3
9.3
1.5
1.5
6.0
6.0
ns
OE to A
n
or B
n
Enable Time
DIR to A
n
or B
n
Disable Time
1.5
1.5
1.5
3.4
3.7
3.8
6.3
6.3
6.0
1.0
2.2
1.5
7.7
9.5
8.7
1.5
1.5
1.5
6.3
6.3
6.0
ns
ns
DIR to A
n
or B
n
1.5
3.2
6.0
1.5
9.2
1.5
6.0
Symbol
Parameter
T
A
=
+
25
°
C
V
CC
=
+
5.0V
C
L
=
50 pF
Min
T
A
=
55
°
C to
+
125
°
C
V
CC
=
4.5V
5.5V
C
L
=
50 pF
Min
T
A
=
40
°
C to
+
85
°
C
V
CC
=
4.5V
5.5V
C
L
=
50 pF
Min
Units
Max
Max
Max
t
S
(H)
t
S
(L)
t
H
(H)
t
H
(L)
t
W
(H)
t
W
(L)
Setup Time, HIGH
or LOW Bus to Clock
1.5
1.5
3.0
1.5
ns
Hold Time, HIGH
or LOW Bus to Clock
Pulse Width,
1.0
1.0
1.0
1.0
ns
3.0
3.0
4.0
3.0
ns
HIGH or LOW
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