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onsemi DM7407M
- Part No.:
- DM7407M
- Manufacturer:
- onsemi
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
DM7407M.pdf
- Description:
- IC BUF NON-INVERT 5.25V 14SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,478
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Product details
Overview
DM7407M from Fairchild Semiconductor is a hex non-inverting buffer IC with six independent open-collector outputs rated for up to 30V, 40mA sink current per channel, and 5V nominal supply operation across 0°C to +70°C. It functions as a level-shifting interface driver in industrial control logic, relay drivers, and LED matrix controllers.
For engineers reviewing the DM7407M datasheet, pinout, applications, or equivalent options, key selection criteria include its 30V output voltage rating, 40mA IOL capability, open-collector topology requiring external pull-up resistors, and SOIC-14 package compatibility with legacy TTL-level signal translation.
Technical Context
The DM7407M implements six identical non-inverting buffer stages, each with an open-collector NPN output stage enabling wired-AND logic and high-voltage off-chip interfacing. Its input thresholds (VIH = 2.0V min, VIL = 0.8V max) are compatible with standard TTL logic families.
Operation requires external pull-up resistors on all outputs to define HIGH-state voltage levels; design equations account for total IOH, IIH, and IIL of connected loads. Propagation delays are specified at tPLH ≤ 10 ns and tPHL ≤ 30 ns under CL = 15 pF and RL = 110Ω conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 4.75–5.25 V - operates within standard 5V TTL rail with ±5% tolerance |
| Output Voltage Rating | 30 V - supports direct driving of relays, lamps, and higher-voltage logic buses |
| Low-Level Output Current | 40 mA - sufficient to sink typical LED segments or small-signal relay coils |
| Input Thresholds | VIH ≥ 2.0 V, VIL ≤ 0.8 V - ensures reliable recognition of TTL-compatible logic levels |
| Propagation Delay | tPLH ≤ 10 ns, tPHL ≤ 30 ns - enables use in medium-speed digital control timing paths |
| Operating Temperature | 0°C to +70°C - suitable for commercial and industrial ambient environments |
| Output Configuration | Open-collector - requires external pull-up resistor; enables wired-AND and level-shifting |
Pinout & Package
DM7407M is housed in a 14-lead SOIC package (JEDEC MS-012, 0.150" narrow body), with 1.27 mm lead pitch and gull-wing surface-mount terminals.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 3, 5, 9, 11, 13 | Input (A1–A6) | Independent TTL-compatible digital inputs for each buffer stage |
| 2, 4, 6, 10, 12, 14 | Output (Y1–Y6) | Open-collector NPN outputs; require external pull-up for HIGH state |
| 7 | GND | Ground reference for all inputs, outputs, and internal circuitry |
| 14 | VCC | Positive supply terminal (4.75–5.25 V); powers internal logic only - not connected to outputs |
Key Features
| Feature | Design Value |
|---|---|
| High-Voltage Open-Collector Outputs | 30 V rating allows direct interface to 12 V/24 V industrial loads without level-shifters |
| TTL-Compatible Input Thresholds | VIH ≥ 2.0 V and VIL ≤ 0.8 V ensure robust noise margin with legacy 5 V logic systems |
| 6 Independent Buffer Channels | Enables compact consolidation of multiple discrete drivers in space-constrained PCB layouts |
| Low Propagation Delay | tPLH ≤ 10 ns supports synchronization in sub-100 MHz control clock domains |
| SOIC-14 Surface-Mount Package | JEDEC MS-012 footprint enables automated assembly and replaces through-hole PDIP variants |
Applications
| Industrial Relay Control | LED Matrix Display Driver |
|---|---|
Use Scenario: Driving electromagnetic relays in PLC I/O modules where 5 V logic must switch 12–24 V coils. IC Role / Device Role / Timing Role: Level-shifting buffer providing current-sinking interface between microcontroller GPIO and relay coil return path. Use Value: 40 mA per channel and 30 V output rating eliminate need for external transistor stages in low-power relay applications. | Use Scenario: Row/column scanning of multiplexed 7-segment or dot-matrix LED displays. IC Role / Device Role / Timing Role: Sink-driver for common-anode LED rows, synchronized with column drivers via microcontroller timing signals. Use Value: Open-collector outputs allow shared pull-up rails and reduce inter-channel crosstalk during rapid scan cycles. |
| Legacy TTL Bus Interface | Wired-AND Logic Implementation |
Use Scenario: Interfacing modern 3.3 V or 5 V microcontrollers to older 5 V TTL bus systems with mixed voltage signaling. IC Role / Device Role / Timing Role: Signal translator and current amplifier ensuring valid HIGH/LOW levels across voltage domain boundaries. Use Value: VIH/VIL thresholds match TTL specifications, while 30 V output tolerance accommodates bus termination and noise margins. | Use Scenario: Implementing interrupt arbitration or status aggregation using hardware-wired logic in embedded controllers. IC Role / Device Role / Timing Role: Enabling multiple open-collector outputs tied to a single pull-up node to generate logical AND of active-low signals. Use Value: Eliminates need for additional logic gates; reduces component count and propagation delay in priority encoding circuits. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar buffer interface applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN7407N | Same electrical specs and pinout; manufactured by Texas Instruments; PDIP-14 only | No SOIC option; larger footprint and through-hole assembly required | Select when legacy through-hole manufacturing or TI-sourced components are mandated |
| 74LS07DR | Lower IOL (8 mA), faster tPHL (15 ns), same VOH (30 V); SOIC-14 package | Insufficient sink current for relay or high-brightness LED loads | Choose only for low-current, high-speed logic buffering where 40 mA is unnecessary |
Compared with SN7407N and 74LS07DR, the DM7407M uniquely combines 40 mA sink capability, 30 V output rating, and SOIC-14 packaging-making it optimal for surface-mount industrial interface designs requiring robust current drive without redesigning board layout.
Availability
DM7407M is available at Aetrix Electronics and suitable for industrial relay control, LED matrix display driving, and legacy TTL bus interfacing requiring stable component supply and long-term obsolescence management.
Supply support for DM7407M 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 power IC manufacturer, acquired by ON Semiconductor in 2016; its legacy logic portfolio remains widely deployed in industrial systems.
The DM7407M belongs to Fairchild's 7400-series TTL-compatible logic family, designed specifically for robust level translation and high-voltage load driving in factory automation and instrumentation.
FAQ
What is the maximum output voltage rating of the DM7407M?
The DM7407M has a maximum output voltage rating of 30 V, allowing it to safely interface with higher-voltage loads such as 12 V or 24 V relays and lamps. This rating applies to the open-collector output terminals (pins 2, 4, 6, 10, 12, 14) when the device is not sinking current. The DM7407M must never be operated beyond this limit to avoid permanent damage.
Does the DM7407M require external pull-up resistors on its outputs?
Yes, the DM7407M requires external pull-up resistors on all six open-collector outputs to establish a valid HIGH logic level. Without them, outputs remain floating in the HIGH state. Pull-up values depend on connected load characteristics and are calculated using Fairchild's published equations accounting for total IOH, IIH, and IIL. The DM7407M itself does not provide internal pull-ups.
What is the operating temperature range for the DM7407M?
The DM7407M is specified for operation from 0°C to +70°C ambient temperature, meeting commercial-grade requirements. This range is validated across all electrical parameters in the datasheet, including propagation delay, output current, and input thresholds. Operation outside this range may result in undefined behavior or reduced reliability, and the DM7407M is not characterized for extended or automotive temperature grades.
Can the DM7407M be used as a direct replacement for the SN7407N?
The DM7407M and SN7407N share identical logic function, pinout, and core electrical specifications, but differ in package: DM7407M is SOIC-14 while SN7407N is PDIP-14. They are functionally interchangeable in circuit design, though PCB layout and assembly process must match the respective package. The DM7407M cannot be substituted into a PDIP footprint without adapter hardware.
What is the typical supply current consumption of the DM7407M?
The DM7407M draws ICCH = 29–41 mA when all outputs are HIGH (non-sinking), and ICCL = 21–30 mA when all outputs are LOW (sinking). These values are measured at VCC = 5.25 V and TA = 25°C. Actual current depends on output loading and switching activity; the DM7407M does not draw significant quiescent current when inputs are static and outputs are unconnected.
DM7407M Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- 7400
- Package/Case:
- 14-SOIC (0.154", 3.90mm Width)
- 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:
- Surface Mount
- Supplier Device Package:
- 14-SOIC
DM7407M FAQ
1.How can I place an order for DM7407M through Aetrix?
Please submit a Request for Quotation (RFQ) for DM7407M 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 DM7407M reliable?
The price and inventory of DM7407M are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DM7407M is usually 5 days.
3.What payment methods are accepted for DM7407M?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DM7407M transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DM7407M?
DM7407M orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DM7407M 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 DM7407M?
For technical support, including DM7407M datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DM7407M requirements.
6.How does Aetrix verify that DM7407M is sourced from the original manufacturer or authorized distributors?
All DM7407M 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 DM7407M meets industry standards.
7.What is the process for return or replacement of DM7407M?
All DM7407M units undergo pre-shipment inspection (PSI). If there is an issue with DM7407M, 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 DM7407M part is unused and in its original packaging.
Return procedure for DM7407M:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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