Texas Instruments SN65472DEP

Overview

SN65472DEP from Texas Instruments is a dual peripheral NAND driver IC designed for high-voltage switching in industrial control systems. It delivers 300 mA continuous output current per channel, supports 70 V off-state output voltage, operates from –40°C to 125°C, and features TTL-compatible diode-clamped inputs - enabling direct interface with legacy logic in relay, lamp, and MOSFET driver applications.

For engineers reviewing the SN65472DEP datasheet, SN65472DEP pinout, SN65472DEP application, or SN65472DEP equivalent, key selection criteria include breakdown voltage margin (70 V), thermal performance (θJA = 115.3°C/W), latch-up immunity at 55 V, medium-speed switching (tPLH ≤65 ns), and SOIC-8 packaging for space-constrained PCBs.

Technical Context

The SN65472DEP integrates two independent NPN transistor-based peripheral drivers with internally connected NAND logic gates and base-resistor networks. Each channel uses diode-clamped TTL inputs and open-collector outputs capable of sinking up to 400 mA continuously while maintaining safe operation up to 70 V off-state voltage.

Its architecture avoids output latch-up at 55 V and supports industrial temperature operation (–40°C to 125°C) with controlled baseline manufacturing across single assembly and fabrication sites. Switching performance is optimized for medium-speed applications such as relay actuation and memory address line driving, not high-frequency digital signaling.

Key Specifications

Pinout & Package

SN65472DEP is housed in an 8-pin SOIC (D) package with 1.75 mm max height, JEDEC MS-012 compliant outline, and NIPDAU lead finish. The package supports standard reflow (Level-1-260°C-UNLIM) and fits 0.050″ pitch PCB footprints.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual peripheral driver applications.

Compared with SN75452B and SN75462, the SN65472DEP provides optimal balance: 70 V standoff and 55 V latch-up immunity like SN75462, but with 30% faster switching than SN75462 and 2× the voltage margin of SN75452B - making it the preferred choice for new industrial designs requiring both robustness and responsiveness.

Availability

SN65472DEP is available at Aetrix Electronics and suitable for industrial relay control, high-voltage lamp driving, and MOSFET gate buffering requiring stable component supply across extended temperature and long product lifecycles.

Supply support for SN65472DEP 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 high-reliability components for industrial, automotive, and aerospace markets.

The SN65472DEP belongs to TI's Space Enhanced Plastic (SEP) product line, engineered for extended life, radiation-tolerant operation, and guaranteed performance in mission-critical industrial and defense systems.

FAQ

What is the maximum continuous output current per channel for the SN65472DEP?

The SN65472DEP is characterized for 300 mA continuous collector current per channel under recommended operating conditions (–40°C to 125°C). Absolute maximum rating is 400 mA, but sustained operation above 300 mA requires derating based on junction temperature limits and thermal design. The SN65472DEP datasheet specifies this value in the Recommended Operating Conditions table and confirms it with electrical test data at TJ = 125°C.

Does the SN65472DEP support true dual independent operation, or are the channels interdependent?

The SN65472DEP provides two fully independent peripheral driver channels: Channel 1 (pins 1A, 1B, 1Y) and Channel 2 (pins 2A, 2B, 2Y) share only VCC and GND. Each channel implements its own NAND gate and NPN output stage with separate base resistors and clamping diodes. There is no electrical coupling between channels - the SN65472DEP functions as two discrete drivers in one SOIC-8 package.

What does "EP" in SN65472DEP signify, and how does it differ from commercial-grade variants?

The "EP" suffix in SN65472DEP denotes Texas Instruments' Enhanced Product qualification, which includes extended temperature operation (–40°C to 125°C), controlled baseline manufacturing, single-site assembly/test/fabrication, and enhanced reliability testing per MIL-PRF-38535 Class V. Unlike commercial SN65472D variants, the SN65472DEP guarantees performance across the full military temperature range and offers longer product lifecycle support.

Can the SN65472DEP drive inductive loads directly, and what protection is required?

Yes, the SN65472DEP can drive inductive loads such as relay coils directly due to its 70 V off-state output voltage rating and built-in clamp diodes on inputs. However, an external flyback diode must be placed across the inductive load (cathode to VCC, anode to 1Y/2Y) to suppress back-EMF. The SN65472DEP itself does not integrate output clamping - relying instead on the external diode to protect the NPN collector during turn-off.

Is the SN65472DEP pin-compatible with SN75452B or SN75462, and can it be used as a drop-in replacement?

The SN65472DEP is functionally interchangeable with SN75452B and SN75462 per TI's datasheet description and shares identical SOIC-8 pinout (D package), pin numbering, and logic configuration. However, it is not a guaranteed drop-in replacement due to differences in propagation delay, supply current, and thermal characteristics. System validation is required - especially for timing-critical or thermally constrained designs - before substituting SN65472DEP into existing SN75452B/SN75462 layouts.