Motorola SAA1042V Datasheet

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Order this document by SAA1042/D

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The SAA1042 drives a two–phase stepper motor in the bipolar mode. The
device contains three input stages, a logic section and two output stages.
The IC is contained in a 16 pin dual–in–line heat tab plastic package for
improved heatsinking capability . The center four ground pins are connected
to the copper alloy heat tab and improve thermal conduction from the die to
the circuit board.

• Drive Stages Designed for Motors: 6.0 V and 12 V: SAA1042V

• 500 mA/Coil Drive Capability

• Built–In Clamp Diodes for Overvoltage Suppression

• Wide Logic Supply Voltage Range

• Accepts Commands for CW/CCW and Half/Full Step Operation

• Inputs Compatible with Popular Logic Families: MOS, TTL, DTL

• Set Input Defined Output State

• Drive Stage Bias Adaptable to Motor Power Dissipation for

Optimum Efficiency

STEPPER MOTOR

DRIVER

SEMICONDUCTOR

TECHNICAL DATA

16

1

V SUFFIX

PLASTIC PACKAGE

CASE 648C

PIN CONNECTIONS

Figure 1. Representative Block Diagram

7

10

8

Clock

CW/CCW

Full/

Half Step

V

CC

11

Logic

Gnd

9

V

M

Driver

Driver

R

B

MOTOROLA ANALOG IC DEVICE DATA

V

Z

15

6

Driver Bias

Set

A

L2

1

VD VM

2
3

L1

4

VD

2

3

M

1L1L2

16

L3

L4

14

Gnd Gnd

5

Set/

Clock

Step

6
7

8

(Top View)

Driver Bias

Full/Half

16
15

14
13
12
11
10

9

L3

L4

V

CC
CW/CCW
Gnd

ORDERING INFORMATION

Operating

Device

SAA1042V TJ = – 30° to +125°C Plastic DIP

 Motorola, Inc. 1996 Rev 2

Temperature Range

Package

1

SAA1042

MAXIMUM RATINGS

Clamping Voltage (Pins 1, 3, 14, 16) V
Over Voltage (VOV = V
Supply Voltage V
Switching or Motor Current/Coil I
Input Voltage (Pins 7, 8, 10) Vin clock

Power Dissipation (Note 1)

Thermal Resistance, Junction–to–Air

Thermal Resistance, Junction–to–Case
Operating Junction Temperature Range T
Storage Temperature Range T

NOTE: 1. The power dissipation (PD) of the circuit is given by the supply voltage (VM and VCC) and the

motor current (IM), and can be determined from Figures 3 and 5. PD = P

ELECTRICAL CHARACTERISTICS (T

Supply Current 11 I

Motor Supply Current

(I

= –400 µA, Pins 1, 3, 14, 16 Open)

Pin 6

VM = 6.0 V
VM = 12 V
VM = 24 V

Input Voltage, High State

Input Voltage, Low State V

Input Reverse Current, High State

(Vin = VCC)

Input Forward Current, Low State

(Vin = Gnd)

Output Voltage, High State (VM = 12 V)

I

= –500 mA

out

I

= –50 mA

out

Output Voltage, Low State

I

= 500 mA

out

I

= 50 mA

out

Output Leakage Current, Pin 6 = Open

(VM = VD = V
Clamp Diode Forward Voltage (Drop at IM = 500 mA) 2 V
Clock Frequency 7 f

Clock Pulse Width 7 t

Set Pulse Width 6 t
Set Control Voltage, High State

Set Control Voltage, Low State

(TA = 25°C, unless otherwise noted.)

Rating Symbol SAA1042V Unit

clamp

– VM) V

clamp

= 25°C, unless otherwise noted.)

A

Characteristics Pin(s) Symbol V

clamp max

)

OV
CC

M

Vin Full/Half

Vin CW/CCW

P

D

θJA
θJC

J

stg

15 I

7, 8, 10

7, 8, 10

1, 3, 14, 16

1, 3, 14, 16 I

6 — — V

20 V

6.0 V
20 V

500 mA

V

CC

2.0
80
15

–30 to +125 °C
–65 to +150 °C

– P

drive

CC

M

V

IH

IL

I

IR

I

IF

V

OH

V

OL

DR

F

c

w

s

V

W

°C/W

logic.

CC

5.0 V
20 V

5.0 V

5.0 V

5.0 V

5.0 V
10 V
15 V
20 V

5.0 V
10 V
15 V
20 V

5.0 V
10 V
15 V
20 V

5.0 V
10 V
15 V
20 V

5.0 –
20 V

5.0 –
20 V

5.0 –
20 V

— — 2.5 3.5 V

5.0 –
20 V

5.0 –
20 V

— 10 — — µs

Min Typ Max Unit

—
—

—
—
—

2.0

7.0
10
14

—
—
—
—

—
—
—
—

–10
–25
–40
–50

—
—

—
—

–100 — — µA

0 — 50 kHz

10 — — µs

M

—

—
—

25
30
40

—
—
—
—

—
—
—
—

—
—
—
—

—
—
—
—

VM – 2.0
VM – 1.2

0.7

0.2

—
—

3.5

8.5

—
—
—

—
—
—
—

0.8

1.5

2.5

3.5

2.0

2.0

3.0

5.0
—

—
—
—

—
—

—
—

—

0.5

mA

mA

µA

V

V

V

2

MOTOROLA ANALOG IC DEVICE DATA