3-315
TELCOM SEMICONDUCTOR, INC.
7
6
5
4
3
1
2
8
PRELIMINARY INFORMATION
TC1028
GENERAL DESCRIPTION
The TC1028 is a mixed-function device combining two
general purpose, complimentary output comparators and a
voltage reference in a single 8-pin package.
This increased integration allows the user to replace
two packages, saving space, lowering supply current, and
increasing system performance. The TC1028 operates
down to V
DD
= 1.8V and requires only 10
A of supply
current. A Shutdown input (SHDN) disables the compara-
tors, placing their outputs in a high-impedance state. The
reference stays active in Shutdown Mode. Standby power
consumption is typically 1
A.
The TC1028 is designed specifically for operation from
a single supply, however, operation from dual supplies is
also possible, and the power supply current drain is inde-
pendent of the magnitude of the power supply voltage.
Packaged in an 8-pin MSOP or 8-pin DIP, the TC1028
is ideal for applications requiring low power level detection.
LINEAR BUILDING BLOCK QUAD LOW POWER COMPARATOR
AND VOLTAGE REFERENCE WITH SHUTDOWN
FEATURES
s
Combines Two Comparators and a Voltage
Reference into a Single Package
s
Optimized for Single Supply Operation
s
Small Package ...................................... 8-Pin MSOP
(Occupies Half the Space of an 8-Pin SOIC)
s
Ultra Low Input Bias Current ...... Less than 100pA
s
Low Quiescent Current ........................... 10
A Max
APPLICATIONS
s
Power Supply Circuits
s
Embedded Systems
s
Instrumentation
s
Portable Equipment
s
Consumer Products
s
Replacements for Discrete Components
ORDERING INFORMATION
Part No.
Package
Temp. Range
TC1028COA
8-Pin SOIC
40
C to +85
C
TC1028CPA
8-Pin Plastic DIP
0
C to +70
C
TC1028CUA
8-Pin MSOP
0
C to +70
C
TC1028EOA
8-Pin SOIC
40
C to +85
C
TC1028EPA
8-Pin Plastic DIP
40
C to +85
C
TC1028EUA
8-Pin MSOP
40
C to +85
C
TC43EV
Evaluation Kit for Linear
Building Block Family
TC1028-01 11/15/96
PIN CONFIGURATIONS
TC1028COA
TC1028EOA
V
SS
V
DD
IN
A
+
REF
REF
IN
B
IN
B
IN
B
SHDN
SHDN
TC1028CPA
TC1028EPA
OUT
A
V
SS
IN
A
+
OUT
A
V
SS
V
DD
IN
A
+
OUT
A
OUT
B
V
DD
OUT
B
REF
SHDN
OUT
B
1
2
3
4
8
7
6
5
1
2
3
4
8
7
6
5
8-Pin Plastic DIP
8-Pin SOIC
8-Pin MSOP
1
2
3
4
8
7
6
5
TC1028CUA
TC1028EUA
FUNCTIONAL BLOCK DIAGRAM
REF
IN
B
SHDN
V
SS
V
IN
A
+
OUT
A
V
DD
OUT
B
+
+
TC1028
B
A
Voltage
Reference
EVALUATION
KIT
AVAILABLE
PDF 
ZIP