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Home > Products > Integrated Circuits (ICs) > Logic > Buffers, Drivers, Receivers, Transceivers

onsemi DM7407N

Name: DM7407N
Brand: onsemi
SKU: DM7407N
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: DM7407N

Manufacturer:: onsemi

Category:: Buffers, Drivers, Receivers, Transceivers

Package:: 14-DIP (0.300", 7.62mm)

Datasheet:: DM7407N.pdf

Description:: IC BUF NON-INVERT 5.25V 14DIP

Quantity:: RFQ Add To RFQ list

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Product details

Overview

DM7407N from Fairchild Semiconductor is a hex buffer IC with six independent open-collector outputs rated for up to 30 V, designed for level-shifting and wired-OR logic interfacing in TTL-to-high-voltage systems. It operates at 4.75–5.25 V supply, delivers 40 mA sink current per output, and supports 0°C to +70°C industrial temperature range.

For engineers reviewing the DM7407N datasheet, pinout, applications, or equivalent options, key selection criteria include open-collector voltage tolerance (30 V), output sink capability (40 mA), propagation delay (10–30 ns), input compatibility with standard TTL logic levels, and PDIP-14 package suitability for through-hole prototyping and legacy board designs.

Technical Context

The DM7407N implements six non-inverting buffer gates with open-collector outputs, requiring external pull-up resistors to define high-level logic states. Each output can sink up to 40 mA while maintaining VOL ≤ 0.4 V at IOL = 16 mA and VCC = 4.75 V.

It is electrically compatible with standard TTL inputs (VIH ≥ 2.0 V, VIL ≤ 0.8 V) and supports mixed-voltage interfacing-e.g., driving 12 V or 24 V loads from a 5 V logic controller-due to its 30 V output voltage rating and robust input clamp protection (−1.5 V).

Key Specifications

Parameter	Value and Actual Design Meaning
Supply Voltage	4.75–5.25 V: Ensures stable operation within standard TTL power rail tolerances.
Output Voltage Rating	30 V: Enables direct interface with higher-voltage peripherals (e.g., relays, LEDs, MOSFET gates) without level-shifters.
Output Sink Current	40 mA per channel: Supports driving moderate-current loads like discrete transistors or small solenoids.
Propagation Delay	10–30 ns: Suitable for medium-speed digital control timing (e.g., address strobes, enable signals).
Input Logic Thresholds	VIH ≥ 2.0 V, VIL ≤ 0.8 V: Fully compatible with standard TTL and LSTTL logic families.
Operating Temperature	0°C to +70°C: Qualified for commercial and industrial ambient environments.

Pinout & Package

DM7407N is housed in a 14-lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300" wide, with 0.100" lead pitch and through-hole mounting.

Pin/Terminal	Circuit Role	Design Meaning
1, 3, 5, 9, 11, 13	Input (A1–A6)	Independent TTL-compatible digital inputs; each drives one buffer stage.
2, 4, 6, 10, 12, 14	Open-Collector Output (Y1–Y6)	Active-low sinking outputs; require external pull-up to define HIGH state and set output voltage level.
7	GND	Ground reference for all logic and output circuits.
14	VCC	Positive supply terminal (4.75–5.25 V); powers internal logic only-not connected to output path.

Key Features

Feature	Design Value
High-Voltage Open-Collector Outputs	30 V rating allows direct drive of 12 V/24 V loads without external level-shifting circuitry.
6 Independent Buffer Channels	Enables parallel signal conditioning for multiple control lines (e.g., 6-bit bus drivers or discrete I/O expanders).
TTL-Compatible Inputs	Meets standard VIH/VIL thresholds, ensuring seamless integration into existing 5 V logic systems.
Robust Input Clamp Protection	−1.5 V clamp voltage prevents damage from negative transients on input pins during hot-plug or noise events.

Applications

Industrial Control I/O Expansion	Legacy System Bus Interface
Use Scenario: Driving multiple 24 V relay coils from a 5 V microcontroller output port. IC Role / Device Role / Timing Role: Level-shifting buffer providing current gain and voltage isolation between low-voltage logic and high-voltage actuation circuits. Use Value: Eliminates need for discrete transistor arrays; single DM7407N handles six independent relay drivers with shared 24 V pull-up.	Use Scenario: Interfacing a vintage 8-bit CPU data/address bus to peripheral devices operating at 12 V. IC Role / Device Role / Timing Role: Non-inverting open-collector driver enabling wired-AND bus arbitration and voltage translation. Use Value: Maintains signal integrity across mixed-supply domains while supporting standard TTL timing margins (10–30 ns delays).
LED Matrix Row Drivers	Printer Parallel Port Interface
Use Scenario: Sourcing current to rows of a multiplexed 8×8 LED display powered by 9 V supply. IC Role / Device Role / Timing Role: High-voltage sink driver controlling row activation with precise timing control. Use Value: Delivers 40 mA per row without thermal derating; enables full-brightness operation at 1 kHz refresh rates.	Use Scenario: Adding handshake and status signal buffering between a PC parallel port and an external stepper motor controller. IC Role / Device Role / Timing Role: Isolating and strengthening Strobe, Acknowledge, and Busy signals with open-collector flexibility. Use Value: Supports long-cable runs via 12 V pull-ups; ensures noise-immune signal transmission in electromechanical environments.

Industrial Control I/O Expansion

Legacy System Bus Interface

Use Scenario: Driving multiple 24 V relay coils from a 5 V microcontroller output port.

IC Role / Device Role / Timing Role: Level-shifting buffer providing current gain and voltage isolation between low-voltage logic and high-voltage actuation circuits.

Use Value: Eliminates need for discrete transistor arrays; single DM7407N handles six independent relay drivers with shared 24 V pull-up.

Use Scenario: Interfacing a vintage 8-bit CPU data/address bus to peripheral devices operating at 12 V.

IC Role / Device Role / Timing Role: Non-inverting open-collector driver enabling wired-AND bus arbitration and voltage translation.

Use Value: Maintains signal integrity across mixed-supply domains while supporting standard TTL timing margins (10–30 ns delays).

LED Matrix Row Drivers

Printer Parallel Port Interface

Use Scenario: Sourcing current to rows of a multiplexed 8×8 LED display powered by 9 V supply.

IC Role / Device Role / Timing Role: High-voltage sink driver controlling row activation with precise timing control.

Use Value: Delivers 40 mA per row without thermal derating; enables full-brightness operation at 1 kHz refresh rates.

Use Scenario: Adding handshake and status signal buffering between a PC parallel port and an external stepper motor controller.

IC Role / Device Role / Timing Role: Isolating and strengthening Strobe, Acknowledge, and Busy signals with open-collector flexibility.

Use Value: Supports long-cable runs via 12 V pull-ups; ensures noise-immune signal transmission in electromechanical environments.

Equivalent & Alternatives

The following parts are listed as comparable options for similar buffer applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
SN7407N	Identical electrical specs and pinout; manufactured by Texas Instruments with same JEDEC MS-001 PDIP-14 package.	No functional difference; fully interchangeable in legacy designs requiring 5 V TTL-compatible open-collector buffers.	Select SN7407N when TI-sourced parts are preferred for supply chain diversification or qualification requirements.
74LS07N	Lower IOL (8 mA typical vs. 40 mA), higher speed (tPLH/tPHL ≈ 15 ns), but reduced output voltage rating (15 V max).	Suitable for low-power, high-speed 5 V-only systems; not recommended for >15 V load interfacing.	Choose 74LS07N only if load voltage ≤15 V and sink current <10 mA; otherwise DM7407N remains necessary for high-voltage robustness.

Compared with SN7407N, DM7407N offers identical functionality and drop-in compatibility; versus 74LS07N, it trades some speed for significantly higher output voltage tolerance and sink current-making it the sole choice for 24 V industrial I/O and relay driving where reliability under voltage stress is critical.

Availability

DM7407N is available at Aetrix Electronics and suitable for industrial control I/O expansion, legacy system bus interface, and LED matrix row driving requiring stable component supply and long-term obsolescence management.

Supply support for DM7407N 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

Fairchild Semiconductor was a leading analog and discrete semiconductor manufacturer, acquired by ON Semiconductor in 2016; its legacy logic portfolio remains widely deployed in industrial and automotive systems.

The DM7407N belongs to Fairchild's 7400-series TTL-compatible logic family, engineered specifically for robust level-shifting and high-voltage interfacing in factory automation, test equipment, and retro-computing applications.

FAQ

What is the maximum output voltage rating of the DM7407N?

The DM7407N features open-collector outputs rated for up to 30 V. This specification allows the DM7407N to safely interface with higher-voltage loads such as 12 V or 24 V relays, LEDs, or MOSFET gates without additional level-shifting components. The 30 V rating is absolute maximum and applies per output terminal under no-load or specified sink-current conditions.

Can the DM7407N be used with a 3.3 V microcontroller?

Yes, the DM7407N accepts 3.3 V logic-high inputs reliably because its VIH threshold is only 2.0 V minimum. However, the DM7407N itself requires a 4.75–5.25 V VCC supply to operate correctly; the input logic levels are TTL-compatible, not 3.3 V–native. So while a 3.3 V MCU can drive DM7407N inputs, the DM7407N must be powered from 5 V.

Does the DM7407N require external pull-up resistors?

Yes, the DM7407N has open-collector outputs and cannot source current. External pull-up resistors are mandatory to establish a defined HIGH logic state. The value depends on load voltage, sink current, and speed requirements-for example, a 10 kΩ resistor to 5 V yields ~0.5 mA quiescent current, while a 1 kΩ resistor to 24 V supports faster rise times but draws more power when outputs are low.

What is the operating temperature range of the DM7407N?

The DM7407N is specified for operation from 0°C to +70°C ambient temperature. This commercial-grade range aligns with standard industrial control environments and legacy computing systems. It is not rated for extended temperature ranges (e.g., −40°C to +85°C), so the DM7407N should not be deployed in uncontrolled outdoor or automotive under-hood applications without thermal validation.

Is the DM7407N pin-compatible with other 7400-series hex buffers?

Yes, the DM7407N uses the standard 14-pin DIP layout for hex buffers: inputs on pins 1,3,5,9,11,13 and outputs on pins 2,4,6,10,12,14, with VCC on pin 14 and GND on pin 7. It shares this pinout with SN7407N and 74LS07N, making it physically interchangeable-but functional equivalence depends on output voltage and current ratings, which differ across variants.

DM7407N Specifications

Product attributes: Attribute value

Manufacturer:: onsemi

Series:: 7400

Package/Case:: 14-DIP (0.300", 7.62mm)

Packaging:: Tube

Product Status:: Obsolete

Logic Type:: Buffer, Non-Inverting

Number of Elements:: 6

Number of Bits per Element:: 1

Input Type:: -

Output Type:: -

Current - Output High, Low:: 29mA, 21mA

Voltage - Supply:: 4.75V ~ 5.25V

Operating Temperature:: 0°C ~ 70°C (TA)

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: 14-MDIP

DM7407N FAQ

1.How can I place an order for DM7407N through Aetrix?

Please submit a Request for Quotation (RFQ) for DM7407N on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for DM7407N reliable?

The price and inventory of DM7407N are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DM7407N is usually 5 days.

3.What payment methods are accepted for DM7407N?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DM7407N transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for DM7407N?

DM7407N orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your DM7407N order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for DM7407N?

For technical support, including DM7407N datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DM7407N requirements.

6.How does Aetrix verify that DM7407N is sourced from the original manufacturer or authorized distributors?

All DM7407N products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that DM7407N meets industry standards.

7.What is the process for return or replacement of DM7407N?

All DM7407N units undergo pre-shipment inspection (PSI). If there is an issue with DM7407N, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The DM7407N part is unused and in its original packaging.

Return procedure for DM7407N:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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