ICM7242 Datasheet, PDF (1/7 Pages) Intersil Corporation – Long Range Fixed Timer

ICM7242
November 1996
Long Range Fixed Timer
Features
Description
• Replaces the 2242 in Most Applications
• Timing From Microseconds to Days
• Cascadable
• Monostable or Astable Operation
• Wide Supply Voltage Range . . . . . . . . . . . . . . 2V to 16V
• Low Supply Current. . . . . . . . . . . . . . . . . . . 115µA at 5V
Ordering Information
PART NUMBER
TEMP.
(BRAND)
RANGE (^oC)
PACKAGE
PKG.
NO.
The ICM7242 is a CMOS timer/counter circuit consisting of
an RC oscillator followed by an 8-bit binary counter. It will
replace the 2242 in most applications, with a significant
reduction in the number of external components.
Three outputs are provided. They are the oscillator output,
and buffered outputs from the first and eighth counters.
Pinout
ICM7242
(PDIP, SOIC)
TOP VIEW
ICM7242IPA
ICM7242CBA
(7242CBA)
-25 to 85
0 to 70
8 Ld PDIP
8 Ld SOIC
E8.3
M8.15
V_DD 1
÷2 OUT 2
÷128/256 OUT 3
V_SS 4
8 TB I/O
7 RC
6 TRIGGER
5 RESET
Functional Diagram
R₁
50K
+
R₂
-
86K
+
7
-
RC
R₃
50K
R
SQ
RQ
Q
CL
Q
S
Q
CL
Q
S
Q
CL
Q
S
Q
CL
Q
S
Q
CL
Q
S
Q
CL
Q
S
Q
CL
Q
S
Q
CL
Q
S
1
4
V_DD
V_SS
8
TB I/O
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 321-724-7143 | Copyright © Intersil Corporation 1999
8-163
5
RESET
6
2
3
TRIGGER ÷2 OUT ÷128/256
OUTPUT
File Number 2866.2