Texas Instruments UC2708NE

Overview

UC2708NE from Texas Instruments is a dual non-inverting power driver IC designed to interface TTL/CMOS logic with high-power MOSFETs in switching power stages. It delivers 3.0 A peak source/sink per channel, operates from 5 V to 35 V, features 25 ns rise/fall times and propagation delays, and includes independent enable and shutdown controls for robust gate drive management in DC-DC converters and motor drivers.

For engineers reviewing the UC2708NE datasheet, UC2708NE pinout, UC2708NE application, or UC2708NE equivalent, this page provides verified electrical parameters, thermal shutdown behavior, input voltage tolerance (–0.3 V to VIN + 0.3 V), output saturation voltages at ±500 mA, and package-specific functionality - all confirmed for the 16-pin PDIP (N) industrial-grade variant.

Technical Context

The UC2708NE implements two independent totem-pole output stages with Schottky-process high-voltage transistors, enabling efficient high-frequency switching up to 200 kHz. Each channel accepts logic-level inputs compatible with TTL and CMOS, tolerating input voltages up to VIN, and supports simultaneous or independent control via Input A/B and global Enable/Shutdown signals.

Its internal bias circuitry maintains stable operation across the full 5 V–35 V supply range, while thermal shutdown activates at 155°C and under-voltage lockout engages when Enable falls below 1.0 V (falling threshold). The Shutdown pin forces outputs low without affecting internal logic, whereas Enable disables the entire device, reducing quiescent current by up to 90%.

Key Specifications

Pinout & Package

UC2708NE is supplied in a 16-pin plastic dual in-line package (PDIP-N), rated for industrial temperature operation (–25°C to +85°C). Pin 4 is Logic Gnd; Pins 5, 12, and 13 are no-connect. Shutdown functionality is enabled in this JE/NE/DW package family.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual non-inverting power driver applications.

Compared with UC3708NE and UC2708DW, the UC2708NE offers industrial-temperature qualification in a through-hole PDIP package - making it optimal for field-deployed equipment requiring manual reworkability, thermal resilience, and legacy board compatibility.

Availability

UC2708NE is available at Aetrix Electronics and suitable for industrial motor control, telecom DC-DC converters, and UPS inverter stages requiring stable component supply across extended temperature ranges and long product lifecycles.

Supply support for UC2708NE includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Texas Instruments is a global semiconductor leader specializing in analog, embedded processing, and power management technologies, with decades of heritage in high-reliability interface ICs.

The UC1708/UC2708/UC3708 family was engineered specifically for robust, high-speed gate driving in industrial power conversion systems - emphasizing timing accuracy, fault resilience, and wide supply flexibility.

FAQ

What is the maximum operating junction temperature for UC2708NE?

The UC2708NE has a maximum operating junction temperature of 150°C, with thermal shutdown activating at 155°C to prevent damage during overload or inadequate heatsinking. This specification is validated for the industrial temperature grade (–25°C to +85°C ambient), and derating curves in the TI datasheet SLUS171C must be applied when operating near thermal limits. The UC2708NE's thermal shutdown is fully integrated and does not require external components.

Does UC2708NE support 3.3 V logic inputs?

Yes, UC2708NE supports 3.3 V logic inputs because its A and B inputs are compatible with TTL and CMOS families and tolerate voltages up to VIN + 0.3 V. With VIN ≥ 5 V, a 3.3 V high-level signal exceeds the 2.0 V minimum high-level input threshold, ensuring reliable recognition. The UC2708NE input current remains within ±0.6 mA at 3.3 V, minimizing loading on low-drive microcontrollers.

How does the Enable pin differ from the Shutdown pin in UC2708NE?

In UC2708NE, the Enable pin places the entire device into under-voltage lockout, reducing supply current by up to 90% and holding outputs in a self-biasing low-voltage state. The Shutdown pin, in contrast, only forces both outputs low while leaving internal logic active - allowing rapid resumption of operation without reinitialization. This distinction makes Enable ideal for system sleep modes and Shutdown optimal for fault recovery.

Can UC2708NE drive both N-channel and P-channel MOSFETs?

The UC2708NE is a non-inverting driver with totem-pole outputs optimized for driving N-channel MOSFET gates in low-side or synchronous rectifier configurations. It cannot directly drive high-side P-channel MOSFETs due to lack of level-shifting or bootstrap capability. For high-side N-MOSFETs, an external bootstrap circuit or dedicated high-side driver is required. The UC2708NE's output voltage swing is rail-to-rail (0 V to VIN), limiting its use to referenced gate drives.

Is UC2708NE pin-compatible with UC3708NE?

Yes, UC2708NE and UC3708NE share identical pinouts, electrical specifications, and functional behavior - differing only in temperature rating (UC2708NE: –25°C to +85°C; UC3708NE: 0°C to +70°C) and packaging markings. Both use the same 16-pin PDIP-N footprint and connection diagram. No PCB changes are required when substituting UC2708NE for UC3708NE in designs needing extended temperature operation.