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74ALS109A Fiches technique(PDF) 3 Page - NXP Semiconductors

No de pièce 74ALS109A
Description  Dual J-K positive edge-triggered flip-flop with set and reset
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Fabricant  PHILIPS [NXP Semiconductors]
Site Internet  http://www.nxp.com
Logo PHILIPS - NXP Semiconductors

74ALS109A Fiches technique(HTML) 3 Page - NXP Semiconductors

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Philips Semiconductors
Product specification
74ALS109A
Dual J-K positive edge triggered flip-flop
with set and reset
1991 Feb 08
3
LOGIC DIAGRAM
VCC = Pin 16
GND = Pin 8
4, 12
SC00042
SD
RD
5, 11
1, 15
CP
J
K
2, 14
3, 13
6, 10
7, 9
Q
Q
FUNCTION TABLE
INPUTS
OUTPUTS
OPERATING
SD
RD
CP
J
K
Q
Q
MODE
L
H
X
X
X
H
L
Asynchronous set
H
L
X
X
X
L
H
Asynchronous reset
L
L
X
X
X
H*
H*
Undetermined*
H
H
h
l
q
q
Toggle
H
H
l
l
L
H
Load “0”
H
H
h
h
H
L
Load “1”
H
H
l
h
q
q
Hold “no change”
H
H
L
l
h
q
q
Hold “no change”
H = High voltage level
h
= High state must be present one setup time prior to
Low-to-High clock transition
L
= Low voltage level
l
= Low state must be present one setup time prior to
Low-to-High clock transition
q
= Lower case indicate the state of the referenced output prior to
the Low-to-High clock transition
X = Don’t care
↑ = Low-to-High clock transition
*
= The output levels in this configuration are not guaranteed to
meet the minimum levels for VOH if the set and reset are near
VIN maximum. Furthermore, this configuration is nonstable;
that is, it will not remain when either set or reset returns to its
inactive (High) level.
ABSOLUTE MAXIMUM RATINGS
(Operation beyond the limit set forth in this table may impair the useful life of the device.
Unless otherwise noted these limits are over the operating free-air temperature range.)
SYMBOL
PARAMETER
RATING
UNIT
VCC
Supply voltage
–0.5 to +7.0
V
VIN
Input voltage
–0.5 to +7.0
V
IIN
Input current
–30 to +5
mA
VOUT
Voltage applied to output in high output state
–0.5 to VCC
V
IOUT
Current applied to output in Low output state
16
mA
Tamb
Operating free-air temperature range
0 to +70
°C
Tstg
Storage temperature range
–65 to +150
°C
RECOMMENDED OPERATING CONDITIONS
SYMBOL
PARAMETER
LIMITS
UNIT
SYMBOL
PARAMETER
MIN
NOM
MAX
UNIT
VCC
Supply voltage
4.5
5.0
5.5
V
VIH
High-level input voltage
2.0
V
VIL
Low-level input voltage
0.8
V
IIk
Input clamp current
–18
mA
IOH
High-level output current
–0.4
mA
IOL
Low-level output current
8
mA
Tamb
Operating free-air temperature range
0
+70
°C


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