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SN54ALS190 Datasheet(PDF) 6 Page - Texas Instruments

Part No. SN54ALS190
Description  SYNCHRONOUS 4-BIT UP/DOWN DECADE AND BINARY COUNTERS
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Maker  TI [Texas Instruments]
Homepage  http://www.ti.com
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 6 page
background image
fclock Clock frequency
MHz
CLK high or low
tsu
Setup time
ns
VOL
V
IIL
VCC = 5.5 V,
VI = 0.4 V
mA
SN54ALS190, SN54ALS191, SN74ALS190, SN74ALS191
SYNCHRONOUS 4-BIT UP/DOWN DECADE COUNTERS
SDAS210 – D2661, DECEMBER 1982 – REVISED MAY 1986
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
6
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)
Supply voltage, VCC
7 V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Input voltage
7 V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operating free-air temperature range: SN54ALS190, SN54ALS191
– 55
°C to 125°C
. . . . . . . . . . . . . . . . . . .
SN74ALS190, SN74ALS191
0
°C to 70°C
. . . . . . . . . . . . . . . . . . . . . . .
Storage temperature range
– 65
°C to 150°C
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
recommended operating conditions
SN54ALS190
SN54ALS191
SN74ALS190
SN74ALS191
UNIT
MIN
NOM
MAX
MIN
NOM
MAX
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
– 0.4
– 0.4
mA
IOL
Low-level output current
4
8
mA
’ALS190
0
20
0
25
’ALS191
0
20
0
30
’AS190
25
20
tw
Pulse duration
‘AS191
20
16.5
ns
LOAD low
25
20
Data before LOAD
25
20
CTEN before CLK
45
20
D/U before CLK
45
20
LOAD inactive before CLK
20
20
Data after LOAD
5
5
tsu
Hold time
CTEN after CLK
0
0
ns
D/U after CLK
0
0
TA
Operating free-air temperature
–55
125
0
70
°C
electrical characteristics over recommended operating free-air temperature range (unless
otherwise noted)
PARAMETER
TEST CONDITIONS
SN54ALS190
SN54ALS191
SN74AAL190
SN74ALS191
UNIT
MIN
TYP†
MAX
MIN
TYP†
MAX
VIK
VCC = 4.5 V,
II = – 18 mA
– 1.5
– 1.5
V
VOH
VCC = 4.5 V to 5.5 V,
IOH = – 0.4 mA
VCC –2
VCC –2
V
VCC = 4.5 V,
IOL = 4 mA
0.25
0.5
0.25
0.4
VCC = 4.5 V,
IOL = 8 mA
0.35
0.5
II
VCC = 5.5 V,
VI = 7 V
0.1
0.1
mA
IIH
VCC = 5.5 V,
VI = 2.7 V
20
20
µA
CTEN OR CLK
– 0.2
– 0.2
All others
– 0.1
– 0.1
IO‡
VCC = 5.5 V,
VO = 2.25 V
–30
–112
–30
–112
mA
ICC
VCC = 5.5 V,
All inputs at 0 V
12
22
12
22
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.




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