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參數(shù)資料
| 型號： | 74ABT16500CSSCX |
| 廠商： | FAIRCHILD SEMICONDUCTOR CORP |
| 元件分類： | 通用總線功能 |
| 英文描述： | 18-Bit Bus Transceiver |
| 中文描述： | ABT SERIES, 18-BIT REGISTERED TRANSCEIVER, TRUE OUTPUT, PDSO56 |
| 封裝： | 0.300 INCH, MO-118, SSOP-56 |
| 文件頁數(shù)： | 6/9頁 |
| 文件大?。?/td> | 74K |
| 代理商： | 74ABT16500CSSCX |
www.fairchildsemi.com
6
7
Skew
Note 14:
This specification is guaranteed but not tested. The limits apply to propagation delays for all paths described switching in phase
(i.e., all LOW-to-HIGH, HIGH-to-LOW, etc.)
Note 15:
These specifications guaranteed but not tested. The limits represent propagation delays with 250 pF load capacitors in place of the 50 pF load
capacitors in the standard AC load.
Note 16:
Skew is defined as the absolute value of the difference between the actual propagation delays for any two separate outputs of the same device.
The specification applies to any outputs switching HIGH-to-LOW (t
OSHL
), LOW-to-HIGH (t
OSLH
), or any combination switching LOW-to-HIGH and/or HIGH-
to-LOW (t
OST
). The specification is guaranteed but not tested.
Note 17:
This describes the difference between the delay of the LOW-to-HIGH and the HIGH-to-LOW transition on the same pin. It is measured across all
the outputs (drivers) on the same chip, the worst (largest delta) number is the guaranteed specification. This specification is guaranteed but not tested.
Note 18:
Propagation delay variation for a given set of conditions (i.e., temperature and V
CC
) from device to device. This specification is guaranteed but not
tested.
Capacitance
Note 19:
C
I/O
is measured at frequency f
=
1 MHz per MIL-STD-883, Method 3012.
Symbol
Parameter
T
A
=
40
°
C to
+
85
°
C
V
CC
=
4.5V–5.5V
C
L
=
50 pF
18 Outputs Switching
(Note 14)
Max
2.0
T
A
=
40
°
C to
+
85
°
C
V
CC
=
4.5V–5.5V
C
L
=
250 pF
18 Outputs Switching
(Note 15)
Max
2.8
Units
t
OSHL
(Note 16)
t
OSLH
(Note 16)
Pin to Pin Skew
ns
HL Transitions
Pin to Pin Skew
LH Transitions
2.0
2.5
ns
t
PS
(Note 17)
t
OST
(Note 16)
t
PV
(Note 18)
Duty Cycle
LH–HL Skew
Pin to Pin Skew
2.0
2.8
ns
2.5
3.0
ns
LH/HL Transitions
Device to Device Skew
LH/HL Transitions
3.0
3.5
ns
Symbol
Parameter
Typ
Units
Conditions
T
A
=
25
°
C
V
CC
=
0.0V
V
CC
=
5.0V
C
IN
C
I/O
(Note 19)
Input Capacitance
Output Capacitance
5.0
11.0
pF
pF
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