SN74LS221NG ON Semiconductor, SN74LS221NG Datasheet - Page 2

• Manufacturer Part Number: SN74LS221NG
• Manufacturer: ON Semiconductor

Specifications of SN74LS221NG

• Logic Family: LS
• High Level Output Current: -400uA
• Low Level Output Current: 8mA
• Quiescent Current: 11uA
• Number Of Elements: 2
• Operating Temperature Classification: Commercial
• Operating Supply Voltage (max): 5.25V
• Operating Supply Voltage (typ): 5V
• Operating Temperature (min): 0C
• Operating Temperature (max): 70C
• Technology: Bipolar
• Abs. Propagation Delay Time: 80ns
• Operating Supply Voltage (min): 4.75V
• Lead Free Status / RoHS Status: Compliant

SN74LS221
V
1A
16
Positive logic: Low input to clear resets Q low and
Positive logic:
Positive logic:
CC
1
TYPE
*See operational notes — Pulse Trigger Modes
CLEAR
1 Rext/
Cext
1B
15
H
H
*
2
L
X
X
°
INPUTS
(EACH MONOSTABLE)
C
Cext
CLR
ext
14
FUNCTION TABLE
http://onsemi.com
Q high regardless of dc levels at A
or B inputs.
1
3
1
DISSIPATION
CLR
(TOP VIEW)
A
H
X
X
L
L
±
TYPICAL
POWER
Q
Q
23 mW
1Q
+
1Q
13
4
B
H
H
X
X
L
°
2
2Q
12
2Q
5
Q
Q
CLR
Q
OUTPUTS
L
L
L
V
R
R/C
OUTPUT PULSE
CC
ext
C
CLR
11
6
2
ext
2
MAXIMUM
LENGTH
70 s
2 R
2B
10
C
7
Q
H
H
H
ext
ext
/
GND
2A
9
8