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NTE1857 PDF даташит

Спецификация NTE1857 изготовлена ​​​​«NTE» и имеет функцию, называемую «Integrated Circuit Stepper Motor Driver».

Детали детали

Номер произв NTE1857
Описание Integrated Circuit Stepper Motor Driver
Производители NTE
логотип NTE логотип 

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NTE1857 Даташит, Описание, Даташиты
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.









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NTE1857 Даташит, Описание, Даташиты
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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NTE1857 Даташит, Описание, Даташиты
DC Electrical Characteristics (Cont’d): (Specifications apply over the recommended supply
voltage and temperature ranges unless otherwise spe
cified, See Notes 2, 3)
Parameter
Pins Symbol
Test Conditions
Min Typ Max Unit
Phase A Output
Output Low Voltage
Off State Leakage Current
Power Supply
11 VOLA IOA = 8mA
IOHA VOHA = 16.5V
– – 0.4 V
– – 100 µA
Power Supply Current
Bias/Set Current
16 IMW IOD = 0µA,
L3 = VOHD, L4 = VOLD
70 mA
IMZ
IBS = 300µA,
L1 = VOHD,
L3 = HiZ, L4 = HiZ
– – 40 mA
IMN L2 = VOLD
L3 = VOHD, L4 = VOLD
75 mA
To Set Phase A
6 IBS
5.0 – – 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.
AC Switching Characteristics: (TA = +25°C, VM = 12V unless otherwise specified)
Parameter
Pins Symbol Test Conditions Min Typ Max Unit
Clock Frequency
Clock Pulse Width High
Clock Pulse Width Low
Bias/Set Pulse Width
Setup Time CW/CCW and F/HS
Hold Time CW/CCW and F/HS
Propagation Delay ClktoDriver Output
Propagation Delay Bias/SettoDriver Output
Propagation Delay ClktoPhase A Low
Propagation Delay ClktoPhase A High
7
7
7
6
107, 97
107, 97
711
711
fCK
PWCKH
PWCKL
PWBS
tsu
th
tPCD
tPBSD
tPHLA
tPLHA
0 50 kHz
10 – – µs
10 – – µs
10 – – µs
5 – – µs
10 – – µs
8 µs
1 µs
12 µs
5 µs
Pin Description:
Name
Power Supply
Ground
Clamp Diode
Voltage
Driver Outputs
Bias/Set
Clock
Symbol
VM
GND
VD
L1, L2,
L3, L4
B/S
Clk
Pin #
16
4, 5,
12, 13
1
2, 3,
14, 15
6
7
Description
Power supply pin for both the logic circuit and the motor coil current. Volt-
age is +7.2 to +16.5V.
Ground pins for the logic circuit and the motor coil current. The physical
configuration of the pins aids in dissipating heat from within the IC pack-
age.
This pin is used to protect the outputs where large voltage spikes may oc-
cur as the motor coils are switched. Typically a diode is connected be-
tween this pin and Pin16.
High current outputs for the motor coils. L1 and L2 are connected to one
coil, and L3 and L4 to the other coil.
This pin is typically 0.7 below VM. The current out of this pin (through a
resistor to GND) determines the maximum output sink current. If the pin
is opened (IBS < 5.0µA) the outputs assume a high impedance condition,
while the internal logic presets to a Phase A condition.
The positive edge of the clock input switches the outputs to the next posi-
tion. This input has no effect if Pin6 is open.










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