MAXIMUM RATINGS:

PARAMETER

SYMBOL

VALUE

UNIT

Storage Temperature

-65 to +150

°C

Operating Temperature

1. Plastic

-25 to +70

°C

2. Ceramic

-55 to +125

°C

Voltage (any pin to Vss)

-30 to +.5

Volts

DC ELECTRICAL CHARACTERISTICS:

SYMBOL

MIN

TYP

MAX

UNIT

Supply Voltage

5

-

28

Volts

Supply Current

(Excluding Outputs)

-

4.5

6

mA

Input Specifications:

BRAKE, ENABLE, CS1, CS2

-

150

-

K

Ω

S1, S2, S3, FORWARD/REVERSE

Voltage (Logic "1")

-

Volts

(Logic "0")

0

-

Volts

OVERCURRENT SENSE (See Note)

Voltage (Logic "1")

-

Volts

(Logic "0")

0

-

Volts

Oscillator:

Frequency Range

0

1/RC

100

kHz

External Resistor Range

22

-

1000

k

Ω

NOTE: Theoretical switching point of the OVERCURRENT SENSE input is one half of the power supply determined by an internal bias

network in manufacturing. Tolerances cause the switching point to vary plus or minus .25 Volts. After manufacture, the switching point

remains fixed within 10 mV over time and temperature. The input switching sensivity is a maximum of 50mV. There is no hysteresis on

the OVERCURRENT SENSE input.

TABLE I

OUTPUT CURRENT LIMITING RESISTOR SELECTION TABLE

POWER

OUTPUT CURRENT

SUPPLY

(VOLTS)

20

15

10

7.5

5

2.5

mA

6

**

**

**

**

**

2.0

9

**

**

**

.94 1.6

3.2

12

.35 .53 .88 1.2 2.1

4.0

15

.54 .76 1.2 1.7 2.6

5.3 Resistance

18

*

1.0 1.6 2.1 3.2

6.5

(k

Ω)

21

*

*

1.9 2.5 3.8

7.7

24

*

*

2.2 2.9 4.4

9.0

28

*

*

*

3.5 5.3 10.3

*causes excessive power dissipation

**exceeds max current possible for this voltage

TABLE II

For Power Supply 5-28 Volts

R13 (K ohms)

Output Voltage

10

Vss -0.5

5.1

Vss -1.0

2.7

Vss -2.0

TABLE III

OUTPUT COMMUTATION SEQUENCE

THREE PHASE OPERATION

SEQUENCE SELECT

CS1 CS2

CS1 CS2

CS1 CS2 CS1 CS2

FORWARD/REVERSE=1

FORWARD/REVERSE=0

0

0

0

1

1

0

1

1

ELECTRICAL SEPARATION

(-60°-)

(-120°-)

(-240°-)

(-300°-)

OUTPUTS

DRIVERS

OUTPUTS

DRIVERS

SENSE INPUTS

S1 S2 S3

S1 S2 S3

S1 S2 S3

S1 S2 S3

ENABLED A

B

C

ENABLED

A

B

C

0 0 0

0 0 1

0 1 0

0 1 1

O1, O5

+

-

Off

O2, O4

-

+

Off

1 0 0

1 0 1

1 1 0

1 1 1

O3, O5

Off

-

+

O2, O6

Off

+

-

1 1 0

1 0 0

1 0 0

1 1 0

O3, O4

-

Off

+

O1, O6

+

Off

-

1 1 1

1 1 0

1 0 1

1 0 0

O2, O4

-

+

Off

O1, O5

+

-

Off

0 1 1

0 1 0

0 0 1

0 0 0

O2, O6

Off

+

-

O3, O5

Off

-

+

0 0 1

0 1 1

0 1 1

0 0 1

O1, O6

+

Off

-

O3, O4

-

Off

+

0 1 0

0 0 0

0 0 0

0 1 0

ALL DISABLED

ALL DISABLED

1 0 1

1 1 1

1 1 1

1 0 1

ALL DISABLED

ALL DISABLED

The OVERCURRENT input (BRAKE low) enables external output drivers in normal sequence when more negative than Vss/2 and disables

all external output drivers when more positive than Vss/2. The OVERCURRENT is sensed continuously, and sets a flip flop which is reset

by the rising edge of the ENABLE input or the sawtooth OSCILLATOR. (See description under OVERCURRENT SENSE.)

7362-110292-3