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SN74ALS996DW Datasheet(PDF) 4 Page - Texas Instruments

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Part No. SN74ALS996DW
Description  8-BIT D-TYPE EDGE-TRIGGERED READ-BACK LATCHES
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Maker  TI [Texas Instruments]
Homepage  http://www.ti.com
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SN54ALS996, SN74ALS996
8-BIT D-TYPE EDGE-TRIGGERED READ-BACK LATCHES
SDAS098B – OCTOBER 1984 – REVISED JANUARY 1995
2–4
POST OFFICE BOX 655303
β€’ DALLAS, TEXAS 75265
recommended operating conditions
SN54ALS996
SN74ALS996
UNIT
MIN
NOM
MAX
MIN
NOM
MAX
UNIT
VCC
Supply voltage
4.5
5
5.5
4.5
5
5.5
V
All inputs
2
VIH
High-level input voltage
All inputs except OE, RD
2
V
OE, RD
2.2
VIL
Low-level input voltage
0.8
0.8
V
IOH
High level output current
Q
–1
– 2.6
mA
IOH
High-level output current
D
– 0.4
– 0.4
mA
Q
12
24
IOL
Low-level output current
Q
48†
mA
D
8
8
fclock
Clock frequency
0
35
0
35
MHZ
CLR low
10
10
tw
Pulse duration
CLK low
14.5
14.5
ns
CLK high
14.5
14.5
Data before CLK
↑
15
15
t
Setup time
EN low before CLK
↑
10
10
ns
tsu
Setup time
CLK high before EN
↑‑
15
15
ns
CLR high (inactive) before CLK
↑
10
10
Data after CLK
↑
1
0
th
Hold time
EN low after CLK
↑
5
5
ns
RD high after CLK
↑§
5
5
TA
Operating free-air temperature
–55
125
0
70
Β°C
† Applies only to the -1 version and only if VCC is maintained between 4.75 V and 5.25 V
‑ This setup time ensures that EN will not false clock the data register.
Β§ This hold time ensures that there will be no conflict on the input data bus.




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