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SN54ALS161B Datasheet(PDF) 10 Page - Texas Instruments

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Part # SN54ALS161B
Description  SYNCHRONOUS 4-BIT DECADE AND BINARY COUNTERS
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Manufacturer  TI [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI - Texas Instruments

SN54ALS161B Datasheet(HTML) 10 Page - Texas Instruments

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SN54ALS161B, SN54ALS162B, SN54ALS163B, SN54AS161, SN54AS163
SN74ALS161B, SN74ALS163B, SN74AS161, SN74AS163
SYNCHRONOUS 4-BIT DECADE AND BINARY COUNTERS
SDAS276 – DECEMBER 1994
10
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
electrical characteristics over recommended operating free-air temperature range (unless
otherwise noted)
PARAMETER
TEST CONDITIONS
SN54AS161
SN54AS163
SN74AS161
SN74AS163
UNIT
MIN
TYP†
MAX
MIN
TYP†
MAX
VIK
VCC = 4.5 V,
II = – 18 mA
– 1.2
– 1.2
V
VOH
VCC = 4.5 V to 5.5 V,
IOH = – 2 mA
VCC –2
VCC –2
V
VOL
VCC = 4.5 V,
IOL = 20 mA
0.25
0.5
0.25
0.5
V
LOAD
0.3
0.3
II
ENT
VCC = 5.5 V,
VI = 7 V
0.2
0.2
mA
All others
0.1
0.1
LOAD
60
60
IIH
ENT
VCC = 5.5 V,
VI = 2.7 V
40
40
µA
All others
20
20
LOAD
–1.5
–1.5
IIL
ENT
VCC = 5.5 V,
VI = 0.4 V
–1
–1
mA
All others
– 0.5
– 0.5
IO‡
VCC = 5.5 V,
VO = 2.25 V
–30
–112
–30
–112
mA
ICC
VCC = 5.5 V
35
53
35
53
mA
† All typical values are at VCC = 5 V, TA = 25°C.
‡ The output conditions have been chosen to produce a current that closely approximates one half of the true short-circuit output current, IOS.
switching characteristics (see Figure 3)
PARAMETER
FROM
(INPUT)
TO
(OUTPUT)
VCC = 4.5 V to 5.5 V,
CL = 50 pF,
RL = 500 Ω,
TA = MIN to MAX§
UNIT
(INPUT)
(OUTPUT)
SN54AS161
SN74AS161
MIN
MAX
MIN
MAX
fmax*
65
75
MHz
tPLH
RCO (with LOAD high)
1
8.5
1
8
tPLH
CLK
RCO (with LOAD low)
3
17.5
3
16.5
ns
tPHL
RCO
2
14
2
12.5
tPLH
CLK
Any Q
1
7.5
1
7
ns
tPHL
CLK
Any Q
2
14
2
13
ns
tPLH
ENT
RCO
1.5
10
1.5
9
ns
tPHL
ENT
RCO
1
9.5
1
8.5
ns
tPHL
CLR
Any Q
2
14
2
13
ns
tPHL
CLR
RCO
2
14
2
12.5
ns
* On products compliant to MIL-STD-883, Class B, this parameter is based on characterization data but is not production tested.
§ For conditions shown as MIN or MAX, use the appropriate value specified under recommended operating conditions.


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