74ALS109A Philips Semiconductors, 74ALS109A Datasheet - Page 2

• Manufacturer Part Number: 74ALS109A
• Description: Dual J-K positive edge-triggered flip-flop with set and reset
• Manufacturer: Philips Semiconductors

NOTE: One (1.0) ALS unit load is defined as: 20 A in the High state and 0.1mA in the Low state.
DESCRIPTION
The 74ALS109A is a dual positive edge-triggered JK-type flip-flop
featuring individual J, K, clock, set, and reset inputs; also true and
complementary outputs. Set (SD) and reset (RD) are asynchronous
active-Low inputs and operate independently of the clock (CP) input.
The J and K are edge-triggered inputs which control the state
changes of the flip-flops as described in the function table. Clock
triggering occurs at a voltage level and is not directly related to the
transition time of the positive-going pulse. The J and K inputs must
be stable just one setup time prior to the Low-to-High transition of
the clock for predictable operation. The JK design allows operation
as a D flip-flop by tying J and K inputs together. Although the clock
input is level sensitive, the positive transition of the clock pulse
between the 0.8V and 2.0V levels should be equal to or less than
the clock to output delay time for reliable operation.
ORDERING INFORMATION
INPUT AND OUTPUT LOADING AND FAN-OUT TABLE
LOGIC SYMBOL
Philips Semiconductors
V
GND = Pin 8
1991 Feb 08
CC
Dual J-K positive edge triggered flip-flop
with set and reset
16-pin plastic DIP
16-pin plastic SO
74ALS109A
Q0, Q1, Q0, Q1
DESCRIPTION
= Pin 16
TYPE
CP0, CP1
SD0, SD1
RD0, RD1
K0, K1
J0, J1
PINS
12
15
11
4
5
1
TYPICAL
CP0
SD0
RD0
CP1
SD1
RD1
150MHz
COMMERCIAL RANGE
f
MAX
T
J inputs
K inputs
Clock inputs (active rising edge)
Set inputs (active-Low)
Reset inputs (active-Low)
Data outputs
amb
J0
V
Q0 Q0 Q1 Q1
ORDER CODE
2 14
74ALS109AN
74ALS109AD
CC
6
= 0 C to +70 C
J1
7
= 5V 10%,
3 13
10
K0
9
K1
SUPPLY CURRENT
DESCRIPTION
TYPICAL
(TOTAL)
3.0mA
DRAWING
SOT109-1
NUMBER
SOT38-4
SF00136
2
PIN CONFIGURATION
IEC/IEEE SYMBOL
74ALS (U.L.)
HIGH/LOW
14
12
13
15
11
3
2
4
1
5
GND
RD0
CP0
SD0
1.0/2.0
1.0/2.0
1.0/2.0
1.0/4.0
1.0/4.0
Q0
Q0
K0
20/80
J0
1
2
3
4
5
6
7
8
1K
2K
1J
2J
R
R
S
S
C1
C2
16
15
14
13
12
10
11
9
74ALS109A
V
RD1
J1
K1
CP1
SD1
Q1
Q1
LOAD VALUE
Product specification
CC
20 A/0.2mA
20 A/0.2mA
20 A/0.2mA
20 A/0.4mA
20 A/0.4mA
0.4mA/8mA
HIGH/LOW
10
6
7
9
853–1275 01670
SF00135
SF00137