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Product Detailed Parameters
- Description：TRANS 50V 500MA 16-PDIP
- Series：ULN200x
- Mfr：Texas Instruments
- Package：Tube
- Transistor Type：-
- Current - Collector (Ic) (Max)：500mA
- Voltage - Collector Emitter Breakdown (Max)：50V
- Vce Saturation (Max) @ Ib, Ic：1.6V @ 500µA, 350mA
- Current - Collector Cutoff (Max)：50µA
- DC Current Gain (hFE) (Min) @ Ic, Vce：-
- Power - Max：-
- Frequency - Transition：-
- Operating Temperature：-40°C ~ 105°C (TA)
- Mounting Type：Through Hole
- Package / Case：16-DIP (0.300", 7.62mm)
- Supplier Device Package：16-PDIP
- Grade：-
- Qualification：-
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Overview
The ULN2003AINE4 is a high-voltage, high-current Darlington transistor array manufactured by Texas Instruments. It integrates seven NPN Darlington pairs with common emitters and open-collector outputs. Each channel supports a collector current of 500 mA and withstands output voltages up to 50 V. The device includes integrated suppression diodes for inductive load switching. It features a 2.7 kΩ series base resistor per pair, enabling direct interface with TTL or 5V CMOS logic. The component operates within an extended temperature range of -40°C to 105°C and is housed in a 16-pin SOIC package.
Feature Summary
- Integrates seven independent NPN Darlington transistor channels with high current gain.
- Includes internal common-cathode clamp diodes to suppress voltage spikes from inductive loads.
- Features dedicated input resistors allowing direct connection to standard TTL and 5V CMOS logic families.
- Provides open-collector outputs capable of sinking significant current for driving external peripherals.
Applications
- Relay Drivers
- Stepper and DC Brushed Motor Drivers
- Lamp Drivers
- Display Drivers (LED and Gas Discharge)
- Line Drivers
Procurement Notes
Verify the specific suffix 'INE4' against the manufacturer's official orderable addendum to confirm the exact package variant and environmental compliance status. Ensure the selected package matches the thermal requirements of the target application, as thermal resistance varies significantly between package types.
Selection Notes
Select this component when interfacing low-power microcontrollers with high-voltage or high-current loads such as relays or solenoids. The 2.7 kΩ input resistor makes it suitable for 5V logic systems. For applications requiring higher supply voltages or different logic thresholds, consider alternative members of the ULx200xA family.
Part Context
This part belongs to the ULN200xA series of high-voltage, high-current Darlington arrays. The 'I' designation indicates an industrial temperature grade (-40°C to 105°C), while 'E4' typically denotes lead-free material composition and specific packaging details defined by Texas Instruments.
Replacement Considerations
The ULN2003AN serves as a standard commercial-grade alternative with similar electrical characteristics but a narrower operating temperature range. Other compatible devices include the ULQ2003A for automotive applications and the ULN2004A for higher voltage CMOS interfaces.
FAQ
How does the ULN2003A handle inductive kickback?
The device includes integrated suppression diodes connected between each output and the COM pin. When driving inductive loads, the COM pin must be connected to the coil supply voltage to allow these diodes to safely dissipate reverse energy.
Can multiple outputs be used simultaneously?
Yes, the device contains seven independent channels. However, total power dissipation must be calculated based on the number of active channels and their respective currents to ensure the junction temperature remains below the maximum limit.
What is the purpose of the 2.7 kΩ resistor in each channel?
The 2.7 kΩ series base resistor allows the ULN2003A to operate directly with TTL or 5V CMOS logic levels without requiring external current-limiting resistors, simplifying the circuit design.
