參數(shù)資料
型號: 74ABT16245
廠商: Fairchild Semiconductor Corporation
英文描述: 16-Bit Transceiver with 3-STATE Outputs
中文描述: 16位收發(fā)器與3態(tài)輸出
文件頁數(shù): 5/8頁
文件大?。?/td> 102K
代理商: 74ABT16245
5
www.fairchildsemi.com
7
Skew
Note 11:
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 12:
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 13:
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 14:
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 15:
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 16:
C
I/O
is measured at frequency f
1 MHz, per MIL-STD-883, Method 3012.
Symbol
Parameter
T
A
40
q
C to 85
q
C
V
CC
4.5V
5.5V
C
L
50 pF
16 Outputs Switching
(Note 11)
Max
T
A
40
q
C to 85
q
C
V
CC
4.5V
5.5V
C
L
250 pF
16 Outputs Switching
(Note 12)
Max
Units
t
OSHL
(Note 13)
t
OSLH
(Note 13)
Pin to Pin Skew
1.3
1.5
ns
HL Transitions
Pin to Pin Skew
LH Transitions
1.3
1.5
ns
t
PS
(Note 14)
t
OST
(Note 13)
t
PV
(Note 15)
Duty Cycle
LH
HL Skew
Pin to Pin Skew
1.5
2.0
ns
1.7
2.5
ns
LH/HL Transitions
Device to Device Skew
LH/HL Transitions
2.0
3.0
ns
Symbol
Parameter
Typ
Units
Conditions
T
A
25
q
C
C
IN
C
I/O
(Note 16)
Input Capacitance
Output Capacitance
5
11
pF
pF
V
CC
0.0V (OE
n
, T/R
n
)
V
CC
5.0V (A
n
, B
n
)
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