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74AC899QMX Datasheet(Hoja de datos) 11 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
No. de Pieza. 74AC899QMX
Descripción  9-Bit Latchable Transceiver with Parity Generator/Checker
Descarga  14 Pages
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Fabricante  NSC [National Semiconductor (TI)]
Página de inicio  http://www.national.com
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 11 page
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AC Operating Requirements
74AC
74AC
VCC
TA ea25 C
TA eb40 C
Fig
Symbol
Parameter
(V)
CL e 50 pF
to a85 C
Units
No
CL e 50 pF
Guaranteed Minimum
ts
Setup Time HIGH or LOW
33
30
30
ns
11 12
An Bn PAR to LEA LEB
50
30
30
th
Hold Time HIGH or LOW
33
20
20
ns
11 12
An Bn PAR to LEA LEB
50
15
15
tw
Pulse Width for LEA LEB
33
40
40
ns
13
50
40
40
Voltage Range 50 is 50V g05V
Voltage Range 33 is 33V g03V
AC Electrical Characteristics
74ACT
54ACT
74ACT
VCC
TA ea25 C
TA eb55 CTA eb40 C
Fig
Symbol
Parameter
(V)
CL e 50 pF
to a125 Cto a85 C
Units
No
CL e 50 pF
CL e 50 pF
Min
Typ
Max
Min
Max
Min
Max
tPLH
Propagation Delay
50
25
75
115
15
135
25
120
ns
1
tPHL
An Bn to Bn An
tPLH
Propagation Delay
50
15
60
85
15
110
15
90
ns
1
tPHL
APAR BPAR to BPAR APAR
tPLH
Propagation Delay
50
25
85
120
15
160
25
125
ns
2
tPHL
An Bn to BPAR APAR
tPLH
Propagation Delay
50
20
80
115
15
160
20
120
ns
3
tPHL
An Bn to ERRA ERRB
tPLH
Propagation Delay
50
20
80
115
15
160
20
120
ns
4
tPHL
ODDEVEN to ERRA ERRB
tPLH
Propagation Delay
50
25
80
115
15
145
25
120
ns
5
tPHL
ODDEVEN to APAR BPAR
tPLH
Propagation Delay
50
15
75
105
15
115
15
115
ns
6
tPHL
APAR BPAR to ERRA ERRB
tPLH
Propagation Delay
50
15
65
90
15
125
15
95
ns
9
tPHL
SEL to APAR BPAR
tPLH
Propagation Delay
50
25
70
105
15
135
25
110
ns
10 11
tPHL
LEB to An Bn
tPLH
Propagation Delay
50
20
80
115
15
160
20
120
ns
10 11
tPHL
LEA to APAR BPAR
tPLH
Propagation Delay
50
25
80
115
15
160
25
120
ns
12
tPHL
LEA LEB to ERRA ERRB
tPZH
Output Enable Time
50
25
70
105
15
160
25
110
ns
7 8
tPZL
GBA or GAB to An Bn
tPZH
Output Enable Time
50
15
60
90
15
110
15
95
ns
7 8
tPZL
GBA or GAB to BPAR or APAR
tPHZ
Output Disable Time
50
15
65
95
15
110
15
95
ns
7 8
tPHL
GBA or GAB to An Bn
tPHZ
Output Disable Time
50
15
65
95
15
110
15
95
ns
7 8
tPLZ
GBA or GAB to BPAR APAR
Voltage Range 50 is 50V g 05V
11




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