ICM7242
November 1996
Long Range Fixed Timer
Description
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 signi鏗乧ant
reduction in the number of external components.
Three outputs are provided. They are the oscillator output,
and buffered outputs from the 鏗乺st and eighth counters.
Features
鈥?Replaces the 2242 in Most Applications
鈥?Timing From Microseconds to Days
鈥?Cascadable
鈥?Monostable or Astable Operation
鈥?Wide Supply Voltage Range . . . . . . . . . . . . . . 2V to 16V
鈥?Low Supply Current. . . . . . . . . . . . . . . . . . . 115碌A(chǔ) at 5V
Ordering Information
PART NUMBER
(BRAND)
ICM7242IPA
ICM7242CBA
(7242CBA)
TEMP.
RANGE (
o
C)
-25 to 85
0 to 70
PACKAGE
8 Ld PDIP
8 Ld SOIC
PKG.
NO.
E8.3
M8.15
Pinout
ICM7242
(PDIP, SOIC)
TOP VIEW
V
DD
1
2
3
4
8
7
6
5
TB I/O
RC
TRIGGER
RESET
梅
2 OUT
梅
128/256 OUT
V
SS
Functional Diagram
R
1
50K
CL
+
R
2
86K
S
Q
CL
Q
S
Q
CL
Q
S
Q
CL
Q
S
Q
Q
-
+
R
S
R
Q
Q
CL
Q
S
Q
CL
7
RC
R
3
50K
-
Q
CL
Q
S
S
Q
CL
Q
S
Q
Q
1
V
DD
4
V
SS
8
TB I/O
5
RESET
6
TRIGGER
2
3
OUTPUT
梅
2 OUT
梅
128/256
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 321-724-7143 | Copyright 漏 Intersil Corporation 1999
File Number
2866.2
8-163