Texas Instruments SN7417DR

Overview

SN7417DR from Texas Instruments is a hex buffer/driver IC with open-collector high-voltage outputs, designed for TTL-to-MOS level translation and high-current sinking (40 mA per channel) in industrial control and display driver circuits. It features 15 V output breakdown voltage, 14 ns typical propagation delay, and operates from 4.75 V to 5.25 V supply at 0 °C to 70 °C.

For engineers reviewing the SN7417DR datasheet, SN7417DR pinout, SN7417DR application, or SN7417DR equivalent, this device is selected for high-voltage interface buffering where sink current capability, TTL compatibility, and open-collector flexibility are required - especially in LED/lamp driving, relay control, and bus line termination.

Technical Context

The SN7417DR implements six independent non-inverting open-collector buffers (Y = A), each capable of sinking up to 40 mA while tolerating up to 15 V on the output node. Its inputs are diode-clamped for transmission-line effect suppression and fully compatible with standard TTL logic families.

It operates strictly as a level-shifting sink driver - not a push-pull or bidirectional transceiver - with no internal pull-up and requires external pull-up resistors for logic-high assertion. Propagation delay is specified at 6–30 ns depending on load (RL = 110 Ω/150 Ω, CL = 15/50 pF), and power dissipation is typically 145 mW.

Key Specifications

Pinout & Package

SN7417DR is housed in a 14-pin SOIC (D) package measuring 8.65 mm × 3.91 mm, with gull-wing leads, RoHS-compliant NiPdAu finish, and moisture sensitivity level (MSL) 1 (unlimited floor life at ≤30 °C/60% RH).

Key Features

Applications

Equivalent & Alternatives

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

Compared with SN7407DR and 74LS07N, SN7417DR provides optimal balance of 15 V safety margin, 40 mA drive, and low input loading - making it preferred for modern 12 V indicator and relay control where reliability and simplicity are critical.

Availability

SN7417DR is available at Aetrix Electronics and suitable for industrial control systems, LED display drivers, relay interface modules, and legacy bus termination requiring stable component supply across multi-year production cycles.

Supply support for SN7417DR 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 decades of heritage in TTL and interface IC design.

The SN74xx7 family was engineered for robust level translation and high-current sinking in industrial and instrumentation applications - prioritizing voltage tolerance, noise immunity, and direct TTL interoperability over speed or low power.

FAQ

What is the maximum output voltage rating for SN7417DR?

The SN7417DR has a minimum output breakdown voltage of 15 V, meaning it can safely withstand up to 15 V on its open-collector outputs when in the OFF (high-impedance) state. This rating is confirmed in the Absolute Maximum Ratings table and applies across the full operating temperature range. Exceeding 15 V risks permanent damage to the output transistor. The SN7417DR is therefore appropriate for 12 V systems but not for 24 V direct interfacing - for which SN7407DR (30 V rated) is recommended.

Can SN7417DR drive multiple TTL inputs simultaneously?

Yes, SN7417DR can drive multiple TTL inputs simultaneously due to its 40 mA per-channel sink current capability and TTL-compatible input thresholds. Each output can source current into multiple standard TTL loads (each drawing ~1.6 mA low-level input current), supporting up to ~25 standard TTL inputs per channel under worst-case conditions. However, total device supply current must remain within ICCL limits (30 mA max), and propagation delay increases with capacitive loading - verify timing margins with actual fanout and trace capacitance in your design.

Does SN7417DR require external pull-up resistors on its outputs?

Yes, SN7417DR absolutely requires external pull-up resistors on all six outputs because it features open-collector outputs with no internal pull-up. Without a pull-up, outputs remain floating in the high state and cannot assert a valid logic HIGH. Typical values range from 1 kΩ (for fast rise time with heavy loads) to 10 kΩ (for low power with light loads). Pull-up voltage may be 5 V, 12 V, or up to 15 V - matching the target interface voltage, as long as it does not exceed the 15 V output breakdown rating.

Is SN7417DR pin-compatible with SN7407DR?

Yes, SN7417DR is pin-compatible with SN7407DR: both use the same SOIC-14 (D) package, identical pin configuration (1A–6A inputs, 1Y–6Y outputs, GND, VCC), and share identical footprint and solder pad layout. The only functional difference is output breakdown voltage (15 V for SN7417DR vs 30 V for SN7407DR); all electrical timing, drive strength, and logic behavior are identical. PCBs designed for SN7407DR can accept SN7417DR without modification - though system-level voltage margin must be verified.

What is the typical power dissipation of SN7417DR at full load?

The typical power dissipation of SN7417DR is 145 mW under full-load conditions (all six outputs sinking 40 mA each at VCC = 5 V), as stated in the datasheet Description section. This value assumes nominal operating conditions (TA = 25 °C, VCC = 5 V) and accounts for both quiescent supply current (ICCL ≈ 30 mA) and dynamic switching losses. Actual dissipation varies with output duty cycle and load resistance; thermal design should reference RθJA = 88.8 °C/W (SOIC) to ensure junction temperature remains below 150 °C in worst-case ambient environments.