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SN54ALS561A Datasheet(PDF) 5 Page - Texas Instruments

Part No. SN54ALS561A
Description  SYNCHRONOUS 4-BIT COUNTERS WITH 3-STATE OUTPUTS
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Maker  TI [Texas Instruments]
Homepage  http://www.ti.com
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SN54ALS561A Datasheet(HTML) 5 Page - Texas Instruments

   
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SN54ALS561A, SN74ALS561A
SYNCHRONOUS 4-BIT COUNTERS
WITH 3-STATE OUTPUTS
SDAS225A – DECEMBER 1982 – REVISED JANUARY 1995
5
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)
Supply voltage, VCC
7 V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Input voltage, VI
7 V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operating free-air temperature range, TA: SN54ALS561A
– 55
°C to 125°C
. . . . . . . . . . . . . . . . . . . . . . . . . . .
SN74ALS561A
0
°C to 70°C
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Storage temperature range
– 65
°C to 150°C
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
† Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, and
functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not
implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
recommended operating conditions
SN54ALS561A
SN74ALS561A
UNIT
MIN
NOM
MAX
MIN
NOM
MAX
UNIT
VCC
Supply voltage
4.5
5
5.5
4.5
5
5.5
V
VIH
High-level input voltage
2
2
V
VIL
Low-level input voltage
0.7
0.8
V
IOH
High level output current
Q outputs
–1
– 2.6
mA
IOH
High-level output current
CCO and RCO
– 0.4
– 0.4
mA
IOL
Low level output current
Q outputs
12
24
mA
IOL
Low-level output current
CCO and RCO
4
8
mA
fclock
Clock frequency
0
20
0
30
MHz
ACLR or ALOAD low
20
15
tw
Pulse duration
CLK high
20
16.5
ns
CLK low
25
16.5
ENP ENT
High
25
20
ENP, ENT
Low
25
20
Data at A, B, C, D
25
20
t
Setup time before CLK
SCLR
Low
21
15
ns
tsu
Setup time before CLK
SCLR
High (inactive)
35
30
ns
SLOAD
Low
20
15
SLOAD
High (inactive)
35
30
ACLR or ALOAD inactive
12
10
th
Hold time after CLK
↑ for data, ENP, ENT, SCLR, or SLOAD
0
0
ns
TA
Operating free-air temperature
–55
125
0
70
°C


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