Texas Instruments SN7417N

Overview

SN7417N from Texas Instruments is a hex buffer/driver IC with open-collector high-voltage outputs, designed for TTL-to-MOS level translation and driving high-current loads such as lamps or relays. It features 15 V maximum output breakdown voltage, 40 mA maximum sink current per output, 14 ns typical propagation delay, and operates across 0°C to 70°C. It is used in indicator lamp drivers and interface circuits requiring voltage-level shifting.

For engineers reviewing the SN7417N datasheet, SN7417N pinout, SN7417N application, or SN7417N equivalent, key selection criteria include open-collector output voltage tolerance (15 V), sink current capability (40 mA), TTL-compatible inputs, PDIP-14 package compatibility, and operation within commercial temperature range (0°C to 70°C).

Technical Context

The SN7417N implements six independent non-inverting buffers (Y = A) with open-collector outputs, enabling wired-OR logic and direct interfacing to higher-voltage external circuits. Its input structure includes diode clamping to suppress transmission-line effects, and all inputs are fully compatible with standard TTL families.

Each output supports up to 40 mA sink current at V_OL ≤ 0.7 V and withstands up to 15 V when off. The device draws 21–41 mA supply current depending on logic state and operates with 4.75–5.25 V supply, delivering consistent performance without internal pull-ups or level-shifting circuitry.

Key Specifications

Pinout & Package

SN7417N is housed in a 14-pin plastic dual in-line package (PDIP-N), with 19.30 mm × 6.35 mm body size and through-hole mounting. Pin 7 is GND, Pin 14 is V_CC, and Pins 1, 5, 7, 11, and 15 are no-connect (NC) terminals - unused and unconnected internally.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar hex open-collector buffer applications.

Compared with SN7407N and 74LS07N, SN7417N offers optimal balance of 15 V output tolerance and 40 mA sink capability in a legacy PDIP package-making it ideal for cost-sensitive, medium-drive industrial interface applications where 30 V rating is unnecessary and LS-series current limits are insufficient.

Availability

SN7417N is available at Aetrix Electronics and suitable for industrial control panels, indicator lamp systems, and TTL-to-12V interface circuits requiring stable component supply and long-term obsolescence management.

Supply support for SN7417N 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 logic solutions, with over 50 years of innovation in industrial and automotive electronics.

The SN74xx7 family was developed to provide robust, high-sink-current buffer solutions for legacy TTL system interfacing-targeting industrial controls, instrumentation, and electromechanical driver applications requiring reliability and wide voltage tolerance.

FAQ

What is the maximum output voltage rating for SN7417N?

The SN7417N has a minimum output breakdown voltage of 15 V when the output is in the OFF state. This allows safe interfacing with external 12 V circuits, lamps, or relays without additional protection components. Exceeding 15 V may cause permanent damage, and operation above this limit is not guaranteed per TI's absolute maximum ratings.

Can SN7417N drive multiple TTL inputs simultaneously?

Yes, SN7417N can drive multiple TTL inputs due to its 40 mA sink current capability per output and TTL-compatible input thresholds. Each output can source current via an external pull-up to V_CC or higher rail, and the 40 mA rating comfortably exceeds the aggregate input current requirements of several standard TTL gates (typically ~1.6 mA per input).

Is SN7417N pin-compatible with SN7407N?

Yes, SN7417N is pin-compatible with SN7407N - both use the same 14-pin PDIP (N) package, identical pinout, and identical logic function. The only functional difference is the maximum output voltage rating: 15 V for SN7417N versus 30 V for SN7407N. No PCB changes are required when substituting between them, provided the external circuit voltage remains ≤15 V.

What is the recommended bypass capacitor for SN7417N?

Texas Instruments recommends a 0.1 µF ceramic bypass capacitor placed as close as possible to the V_CC (Pin 14) and GND (Pin 7) pins of SN7417N. This minimizes power supply noise and ensures stable switching behavior, especially during high-current sink transitions. For systems with multiple SN7417N devices, individual local capacitors are preferred over shared bulk capacitance.

Does SN7417N require pull-up resistors on its outputs?

Yes, SN7417N requires external pull-up resistors on all open-collector outputs (1Y–6Y) to establish a defined HIGH logic level. Without pull-ups, outputs remain floating when inactive. Typical values range from 1 kΩ to 10 kΩ depending on load capacitance, speed requirements, and external voltage rail (e.g., 4.7 kΩ for 5 V, 10 kΩ for 12 V), as confirmed in TI's application guidance for SN7417N.