Motorola MC74ACT109D, MC74AC109N, MC74AC109D Datasheet
5-1
FACT DATA
The MC74AC109/74ACT109 consists of two high-speed completely independent
transition clocked JK
flip-flops. The clocking operation is independent of rise and fall
times of the clock waveform. The JK
design allows operation as a D flip-flop (refer to
MC74AC74/74ACT74 data sheet) by connecting the J and K
inputs together.
Asynchronous Inputs:
LOW input to S
D
(Set) sets Q to HIGH level
LOW input to C
D
(Clear) sets Q to LOW level
Clear and Set are independent of clock
Simultaneous LOW on C
D
and SD makes both Q and Q
HIGH
• Outputs Source/Sink 24 mA
• ′ACT109 Has TTL Compatible Inputs
1516 14 13 12 11 10
21
3
4 5 6 7
V
CC
9
8
C
D2J2K2
CP2SD2Q2Q
2
C
D1J1K1
CP1SD1Q1Q1GND
J1K1CP1S
D1Q1Q1
C
D
J K CP S
D
Q
Q
C
D1
PIN NAMES
J1, J2, K
1
, K
2
Data Inputs
CP1, CP
2
Clock Pulse Inputs
C
D1
, C
D2
Direct Clear Inputs
S
D1
, S
D2
Direct Set Inputs
Q1, Q2, Q
1
, Q2Outputs
TRUTH TABLE
Inputs Outputs
S
D
CDCP J K Q Q
L H X X X H L
H L X X X L H
L L X X X H H
H H L L L H
H H H L Toggle
H H L H Q
0
Q
0
H H H H H L
H H L X X Q
0
Q
0
-
H = HIGH Voltage Level
L = LOW Voltage Level
= LOW-to-HIGH Clock Transition
X = Immaterial
Q0(Q
0
) = Previous Q0(Q0) before
LOW-to-HIGH Transition of Clock
DUAL JK POSITIVE
EDGE-TRIGGERED
FLIP-FLOP
N SUFFIX
CASE 648-08
PLASTIC
D SUFFIX
CASE 751B-05
PLASTIC
LOGIC SYMBOL
S
D
Q
J CP
Q
C
D
K
S
D
Q
J CP
Q
C
D
K
MC74AC109 MC74ACT109
5-2
FACT DATA
S
D
K
CP
J
C
D
Q
Q
Please note that this diagram is provided only for the understanding of logic
operations and should not be used to estimate propagation delays.
LOGIC DIAGRAM (one half shown)
MAXIMUM RATINGS*
Symbol Parameter Value Unit
V
CC
DC Supply Voltage (Referenced to GND) –0.5 to +7.0 V
V
in
DC Input Voltage (Referenced to GND) –0.5 to VCC +0.5 V
V
out
DC Output Voltage (Referenced to GND) –0.5 to VCC +0.5 V
I
in
DC Input Current, per Pin ±20 mA
I
out
DC Output Sink/Source Current, per Pin ±50 mA
I
CC
DC VCC or GND Current per Output Pin ±50 mA
T
stg
Storage Temperature –65 to +150 °C
* Maximum Ratings are those values beyond which damage to the device may occur. Functional operation should be restricted to the Recommended
Operating Conditions.
RECOMMENDED OPERATING CONDITIONS
Symbol Parameter Min Typ Max Unit
′AC 2.0 5.0 6.0
VCCSupply Voltage
′ACT 4.5 5.0 5.5
V
Vin, V
out
DC Input Voltage, Output Voltage (Ref. to GND) 0 V
CC
V
VCC @ 3.0 V 150
Input Rise and Fall Time (Note 1)
′AC Devices except Schmitt Inputs
VCC @ 4.5 V 40 ns/V
r
, t
f
′AC Devices except Schmitt Inputs
VCC @ 5.5 V 25
VCC @ 4.5 V 10
tr, t
f
Input Rise and Fall Time (Note 2)
′ACT Devices except Schmitt Inputs
VCC @ 5.5 V 8.0
ns/V
T
J
Junction Temperature (PDIP) 140 °C
T
A
Operating Ambient Temperature Range –40 25 85 °C
I
OH
Output Current — High –24 mA
I
OL
Output Current — Low 24 mA
1. Vin from 30% to 70% VCC; see individual Data Sheets for devices that differ from the typical input rise and fall times.
2. Vin from 0.8 V to 2.0 V; see individual Data Sheets for devices that differ from the typical input rise and fall times.
tr, t
f
Input Rise and Fall Time (Note 2)
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