ESM1602B

January 1996

QUAD COMPARATOR INTERFACE CIRCUIT

.

MINIMUM HYSTERESIS VOLTAGE AT EACH

INPUT : 0.3V

.

OUTPUT CURRENT : 15 mA

.

LARGE SUPPLY VOLTAGE RANGE : + 10V to

+ 35V

.

INTERNAL THERMAL PROTECTION

.

INPUT AND OUTPUT CLAMPING PROTEC-

TION DIODES.

DESCRIPTION

The ESM1602Bis a quadruplecomparatorintented

to provide an interface between signal processing

and transmitting lines in very noisy industrial sur-

roundings.

Outputof each comparator,used as line driver, sup-

plies a constant current (PNP output stage) and is

specially well protected against powerful overvol-

tages. The open collector output circuit allows the

connectionof several comparators to a single trans-

mitting line.

The ESM1602B can operate as receiver on a line

transmitting noisy high-voltage signals. Hysteresis

effect, internally implemented on inputs of each

comparator provides an excellent noise immunity.

In addition, each input is also protected against

overvoltages.

The ESM1602B can operate in a wide supply vol-

tage range (standard operational amplifier

± 15 V

supply or single + 12 V or + 24 V supplies used in

industrial electronic sets).

Moreover, internal thermal protection circuitry cuts

out the output current of the four comparators when

power dissipation becomes excessive.

DIP1 4

SO16

DIP14

SO16

1 - Inverting input 1

2 - Non-inverting input 1

3 - Output 1

4 - Non-inverting input 2

5 - Inverting input 2

6 - Output 2

7 - GND

8 - Output 3

9 - Inverting input 3

10 - Non-inverting input 3

11 - Output 4

12 - Non-inverting input 4

13 - Inverting input 4

1 - Inverting input 1

2 -Non-inverting input 1

3 - Output 1

4 - Non-inverting input 2

5 - Inverting input 2

6 - Output 2

7 - GND

8 - N.C.

9 - N.C.

10 - Output 3

11 - Inverting input 3

12 - Non-inverting input 3

13 - Output 4

14 - Non-inverting input 4

15 - Inverting input 4

ORDER ING NUMBERS: ESM1602B (DIP14)

ESM1602BFP (SO16)

PIN CONNECTIONS (to p view)

1/11