Motor Driver. NTE1857 Datasheet

NTE1857 Driver. Datasheet pdf. Equivalent

Part NTE1857
Description Integrated Circuit Stepper Motor Driver
Feature NTE1857 Integrated Circuit Stepper Motor Driver Description: The NTE1857 is designed to drive a two–.
Manufacture NTE
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NTE1857
NTE1857
Integrated Circuit
Stepper Motor Driver
Description:
The NTE1857 is designed to drive a two–phase stepper motor in the bipolar mode, The circuit of four
input sections, a logic decoding/sequencing section, two driver–stages for the motor coils, and an out-
put to indicate the Phase A drive state.
Features:
D Single Supply Operation: +7.2V to +16.5V
D 350mA/Coil Drive Capability
D Clamp Diodes Provided for Back–EMF
Suppression
D Selectable CW/CCW and Full/Half Step
Operation
D Selectable High/Low Output Impedance
(Half Step Mode)
D TTL/CMOS Compatible Inputs
D Input Hysteresis: 400mV Min
D Phase Logic Can Be Initialized to Phase A
D Phase A Output Drive State Indication
(Open–Collector)
Input Truth Table:
Input Low Input High
CW/CCW
CW
CCW
Full/Half Step Full Step
Half Step
OIC Hi Z Low Z
Clk Positive Edge Triggered
Absolute Maximum Ratings: (Note 1)
Supply Voltage, VM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +18V
Clamp Diode Cathode Voltage (Pin1), VD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . VM +5.0V
Driver Output Voltage (Pins 2, 3, 14, 15), VOD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . VM +6.0V
Driver Output Current/Coil, IOD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±500mA
Input Voltage (Pins 7, 8, 9, 10), Vin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.5 to +7.0V
Bias/Set Current (Pin6), IBS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –10mA
Phase A Output Voltage (Pin11), VOA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +18V
Phase A Sink Current (Pin11), IOA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20mA
Junction Temperature, TJ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +150°C
Storage Temperature Range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –65° to +150°C
Thermal Resistance, Junction–to–Ambient (No Heat Sink), RthJA . . . . . . . . . . . . . . . . . . . . . 45°C/W
Note 1. “Maximum Ratings” are those values beyond which the safety of the device cannot be guar-
anteed. They are not meant to imply that the devices should be operated at these limits.
The “Electrical Characteristics” tables provide conditions for actual device operation.



NTE1857
Recommended Operating Conditions:
Characteristic
Supply Voltage
Clamp Diode Cathode Voltage
Driver Output Current (Per Coil)
Input Voltage (Pins 7, 8, 9, 10)
Bias/Set Current (Outputs Active)
Phase A Output Voltage
Phase A Sink Current
Operating Ambient Temperature
Symbol
VM
VD
IOD
Vin
IBS
VOA
IOA
TA
Min
+7.2
VM
0
300
0
0
Max
+16.5
VM + 4.5
350
+5.5
75
VM
8.0
+70
Unit
Vdc
Vdc
mA
Vdc
µA
Vdc
mA
°C
DC Electrical Characteristics: (Specifications apply over the recommended supply voltage and
temperature ranges unless otherwise specified, See Notes 2, 3)
Parameter
Input Logic Levels
Threshold Voltage (LowtoHigh)
Threshold Voltage (HightoLow)
Hysteresis
Current
Driver Output Levels
Output High Voltage
Output Low Voltage
Differential Mode Output Voltage
Difference
Common Mode Output Voltage
Difference
Output Leakage HiZ State
Clamp Diodes
Forward Voltage
Leakage Current (Per Diode)
Pins Symbol
Test Conditions
Min Typ Max Unit
7, 8, 9,
10
VTLH
VHTL
VHYS
IIL
IIH1
IIH2
VI = 0.4V
VI = 5.5V
VI = 2.7V
0.8
0.4
100
2.0 V
––V
––V
– – µA
+100 µA
+20 µA
2, 3, VOHD IBS = 300µA IOD = 350mA VM2.0 – – V
14, 15
IOD = 0.1mA VM1.2 – – V
VOLD IBS = 300µA, IOD = 350mA
– – 0.8 V
DVOD IBS = 300µA, IOD = 350mA,
Note 4
– – 0.15 V
CVOD IBS = 300µA, IOD = 0.1mA,
Note 5
– – 0.15 V
IOZ1 0 VOD VM
IOZ2
IBS = 5µA
IBS = 300µA,
Pin9 = 2V, Pin8
= 0.8V
100
100
+100 µA
+100 µA
1, 2, 3, VDF
14, 15 IDR Pin1 = 21V, Pins 2, 3, 14, 15 = 0V,
IBS = 0µA
2.5 3.0 V
100 µA
Note 2. Algebraic convention rather than absolute values is used to designate limit values.
Note 3. Current into a pin is designated as positive. Current out of a pin is designated as negative.
Note 4. DVOD = |VOD1,2 VOD3,4| where
VOD1,2 = (VOHD1 VOLD2) or (VOHD2 VOLD1), and
VOD3,4 = (VOHD3 VOLD4) or (VOHD4 VOLD3).
Note 5. CVOD = |VOHD1 VOHD2| or |VOHD3 VOHD4|.







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