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54ACTQ657 bảng dữ liệu(PDF) 8 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
tên linh kiện 54ACTQ657
Giải thích chi tiết về linh kiện  Quiet Series Octal Bidirectional Transceiver with 8-Bit Parity Generator/Checker and TRI-STATE Outputs
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nhà sản xuất  NSC [National Semiconductor (TI)]
Trang chủ  http://www.national.com
Logo NSC - National Semiconductor (TI)

54ACTQ657 bảng dữ liệu(HTML) 8 Page - National Semiconductor (TI)

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AC Electrical Characteristics
Symbol
Parameter
V
CC
(V)
(Note 6)
54ACTQ
Units
T
A = −55˚C to +125˚C
C
L = 50 pF
Min
Max
t
PLH,
Propagation Delay
5.0
1.5
9.0
ns
t
PHL
A
n to Bn,Bn to An
t
PLH,
Propagation Delay
5.0
1.5
13.5
ns
t
PHL
A
n to Parity
t
PLH,
Propagation Delay
5.0
1.5
10.5
ns
t
PHL
ODD/EVEN to PARITY
t
PLH,
Propagation Delay
5.0
1.5
11.0
ns
t
PHL
ODD/EVEN to ERROR
t
PLH,
Propagation Delay
5.0
1.5
13.5
ns
t
PHL
B
n to ERROR
t
PLH,
Propagation Delay
5.0
1.5
10.5
ns
t
PHL
PARITY to ERROR
t
PZH,
Output Enable Time
5.0
1.5
11.5
ns
t
PZL
OE to A
n/Bn
t
PHZ,
Output Disable Time
5.0
1.5
9.0
ns
t
PLZ
OE to A
n/Bn
t
PZH,
Output Enable Time
5.0
1.5
11.5
ns
t
PZL
OE to ERROR (Note 7)
t
PHZ,
Output Disable Time
5.0
1.5
9.0
ns
t
PLZ
OE to ERROR
t
PZH,
Output Enable Time
5.0
1.5
11.5
ns
t
PZL
OE to PARITY
t
PHZ,
Output Disable Time
5.0
1.5
8.5
ns
t
PLZ
OE to PARITY
Note 6: Voltage Range 5.0 is 5.0V ±0.5V
Note 7: These delay times reflect the TRI-STATE recovery time only and not the signal time through the buffers or the parity check circuitry. To assure VALID infor-
mation at the ERROR pin, time must be allowed for the signal to propagate through the drivers (B to A), through the parity check circuitry (same as A to PARITY),
and to the ERROR output after the ERROR pin has been enabled (Output Enable times). VALID data at the ERROR pin
≥ (A to PARITY) + (Output Enable Time).
Capacitance
Symbol
Parameter
Typ
Units
Conditions
C
IN
Input Capacitance
4.5
pF
V
CC = 5.0V
C
PD
Power Dissipation
160.0
pF
V
CC = 5.0V
Capacitance
www.national.com
8


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