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Texas Instruments SN75462DR
- Part No.:
- SN75462DR
- Manufacturer:
- Texas Instruments
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
SN75462DR.pdf
- Description:
- IC PERIPHERAL DRIVER 5.25V 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,199
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Product details
Overview
SN75462DR from Texas Instruments is a dual high-voltage, high-current NAND peripheral driver IC designed for logic-level interfacing to power loads. It delivers 300 mA continuous output current per channel, supports up to 35 V off-state output voltage, and operates across 0°C to 70°C with TTL-compatible diode-clamped inputs. It is used in relay drivers, lamp drivers, and MOSFET gate drivers where robust output stage isolation and latch-up immunity are required.
For engineers reviewing the SN75462DR datasheet, SN75462DR pinout, SN75462DR application, or SN75462DR equivalent, key selection criteria include its 35 V output breakdown rating, 300 mA drive capability per channel, medium-speed switching (tPHL ≤ 50 ns), dual-NAND logic function, and SOIC-8 package compatibility with industrial control and electromechanical interface designs.
Technical Context
The SN75462DR implements two independent NAND-gated NPN transistor output stages, each with internal base resistors (4 kΩ, 1.6 kΩ, 130 Ω) and emitter-follower configuration. Its output transistors are rated for 35 V off-state voltage and exhibit no latch-up at 30 V after conducting 300 mA.
It uses TTL-compatible input thresholds (VIH = 2 V min, VIL = 0.8 V max), draws 13–17 mA supply current when outputs are high, and features diode-clamped inputs for transient protection. The device is not a push-pull or H-bridge driver - it provides open-collector–like sourcing via VCC-connected collectors and grounded emitters.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Logic Function | Dual 2-input NAND gate with active-high inputs and active-low open-emitter outputs |
| Max Output Current | 300 mA per channel continuous - sufficient to directly drive relays, lamps, or small MOSFET gates |
| Off-State Output Voltage | 35 V - enables safe interfacing with 24 V industrial control rails and solenoid loads |
| Propagation Delay | tPHL ≤ 50 ns at 200 mA load - supports medium-speed digital control of power elements |
| Supply Voltage Range | 4.75 V to 5.25 V - tightly regulated 5 V operation only; not tolerant of wide-VCC or battery-derived supplies |
| Operating Temperature | 0°C to 70°C - commercial-grade rating suitable for non-military embedded systems |
| Input Compatibility | TTL-level (VIH ≥ 2 V, VIL ≤ 0.8 V) - interfaces directly with 74LS, 74HC, and microcontroller GPIO without level shifting |
Pinout & Package
SN75462DR is housed in an 8-pin SOIC (D) package with 1.27 mm pitch, 3.9 mm width, and 4.9 mm length. Pin 1 is located at the top-left corner with a beveled edge marking; the package is RoHS-compliant with NiPdAu lead finish and MSL Level-1 reflow rating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1A, 2A | NAND input A (channel 1 & 2) | Active-high TTL-compatible logic input; internally pulled up via 500 Ω resistor to VCC |
| 1B, 2B | NAND input B (channel 1 & 2) | Active-high TTL-compatible logic input; internally pulled up via 1 kΩ resistor to VCC |
| 1Y, 2Y | NAND output (channel 1 & 2) | Open-emitter NPN output - sinks current when low; requires external pull-up to VCC or higher voltage rail |
| VCC | Positive supply | 5 V nominal supply for internal logic and base biasing; not connected to output collector terminals |
| GND | Ground reference | Common return for logic inputs, internal biasing, and output emitter connections |
Key Features
| Feature | Design Value |
|---|---|
| No latch-up at 30 V | Guaranteed immunity to destructive latch-up even after sustained 300 mA conduction at 30 V - critical for reliability in inductive load switching |
| High-voltage output capability | 35 V off-state rating allows direct connection to 24 V PLC I/O rails or automotive auxiliary circuits without external clamping |
| Diode-clamped TTL inputs | Integrated input protection diodes enable robust operation in electrically noisy environments like factory floors or motor drives |
| Internal base resistors | Pre-biased transistor structure eliminates need for external base resistors - reduces BOM count and layout area for simple driver applications |
| Plastic SOIC thermal performance | SOIC-8 package with copper lead frame achieves 464 mW power dissipation at 70°C ambient - supports continuous 300 mA per channel with modest PCB copper |
Applications
| Industrial Relay Control | LED/Lamp Driver |
|---|---|
Use Scenario: Driving 24 V DC electromagnetic relays in programmable logic controller (PLC) output modules. IC Role / Device Role / Timing Role: Dual NAND gate acts as logic-controlled current sink for relay coils; enables AND-gated activation of two independent loads. Use Value: Eliminates need for discrete transistors and base resistors while providing 35 V standoff to prevent coil flyback damage during de-energization. | Use Scenario: Controlling high-brightness indicator lamps or incandescent pilot lights in HMI panels. IC Role / Device Role / Timing Role: Provides low-side switching for lamps rated up to 24 V/300 mA with TTL-compatible enable logic. Use Value: Delivers consistent 300 mA sink current with <0.5 V saturation voltage - minimizes power loss and heat generation in panel-mounted indicators. |
| MOSFET Gate Driver | Memory Address Driver |
Use Scenario: Level-shifting and buffering microcontroller GPIO signals to drive N-channel logic-level MOSFETs in power supply sequencing circuits. IC Role / Device Role / Timing Role: Acts as inverting buffer with current gain - converts 3.3 V/5 V logic into 300 mA capable gate drive with defined turn-off timing. Use Value: Internal base resistors and 50 ns propagation delay ensure controlled MOSFET turn-on/turn-off without external components or ringing. | Use Scenario: Driving address lines or chip-select signals in legacy parallel memory subsystems (e.g., EPROM, SRAM) requiring higher fan-out than standard logic. IC Role / Device Role / Timing Role: Functions as dual NAND buffer to strengthen signal integrity and increase drive strength on shared bus lines. Use Value: 300 mA output capability supports >10 LS-TTL loads per channel - extends reliable memory addressing range in retro computing or instrumentation designs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual high-current NAND driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ULN2003A | 7-channel Darlington array; higher VCE(sat) (~1.1 V), lower speed (tPLH ≈ 250 ns), integrated flyback diodes | Better suited for inductive loads requiring built-in clamping; not pin-compatible; lacks NAND logic | Select ULN2003A when driving solenoids or stepper coils where flyback protection is mandatory and logic gating is handled externally. |
| SN75452BP | Dual non-inverting buffer (not NAND); identical pinout, same SOIC-8 package, 300 mA rating, 35 V rating | Requires external logic for NAND functionality; faster (tPHL ≈ 30 ns); no internal input pull-ups | Choose SN75452BP when non-inverting drive is acceptable and minimal propagation delay is prioritized over integrated logic function. |
Compared with ULN2003A and SN75452BP, the SN75462DR uniquely integrates dual NAND logic with high-voltage, high-current sinking capability in a compact SOIC-8 - making it optimal for space-constrained designs requiring both logic gating and robust load driving without added discretes.
Availability
SN75462DR is available at Aetrix Electronics and suitable for industrial relay control, LED/lamp driving, MOSFET gate interfacing, and memory address buffering requiring stable component supply and long-term production continuity.
Supply support for SN75462DR 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 founded in 1930, specializing in analog, embedded processing, and logic solutions for industrial, automotive, and communications markets.
The SN75462DR belongs to TI's legacy peripheral driver family designed specifically for high-voltage, high-current interfacing between TTL logic and electromechanical or power semiconductor loads in commercial-grade systems.
FAQ
What is the logic function implemented by the SN75462DR?
The SN75462DR implements two independent 2-input NAND gates with active-high TTL-compatible inputs and open-emitter NPN outputs. Each output sinks current when both inputs are high (logic '1'), producing a low-voltage state; otherwise, the output remains high-impedance and requires an external pull-up. This matches positive-logic NAND behavior: Y = NOT(A AND B).
Can the SN75462DR drive inductive loads like relays without external flyback diodes?
No - the SN75462DR does not integrate flyback diodes. When driving inductive loads such as relays or solenoids, an external flyback diode must be connected across the load (cathode to VCC, anode to output pin) to suppress voltage spikes during turn-off. Its 35 V off-state rating accommodates typical 24 V relay coils but does not eliminate the need for clamping.
What is the maximum continuous output current per channel of the SN75462DR?
The SN75462DR is characterized for 300 mA continuous output current per channel under recommended operating conditions (VCC = 4.75–5.25 V, TA ≤ 70°C). At this current, the low-level output voltage is guaranteed ≤ 0.5 V (typical 0.25 V), and power dissipation remains within the SOIC-8 package's 464 mW limit at 70°C ambient.
Is the SN75462DR pin-compatible with the ULN2003A?
No - the SN75462DR (8-pin SOIC) and ULN2003A (16-pin DIP/SOIC) differ in pin count, pin assignment, logic function, and internal architecture. ULN2003A offers seven Darlington drivers with integrated flyback diodes and non-inverting logic; SN75462DR provides two NAND-gated NPN sinks without clamping diodes. They are not interchangeable without PCB redesign.
Does the SN75462DR require external base resistors for its output transistors?
No - the SN75462DR includes internal base resistors (4 kΩ, 1.6 kΩ, and 130 Ω per channel) as part of its pre-biased NPN output stage. This eliminates the need for external base resistors, simplifying design and reducing bill-of-materials count for basic relay, lamp, or MOSFET gate drive applications using the SN75462DR.
SN75462DR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Logic Type:
- Peripheral Driver
- Number of Elements:
- 2
- Number of Bits per Element:
- 2
- Input Type:
- -
- Output Type:
- -
- Current - Output High, Low:
- -, 300mA
- Voltage - Supply:
- 4.75V ~ 5.25V
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
SN75462DR FAQ
1.How can I place an order for SN75462DR through Aetrix?
Please submit a Request for Quotation (RFQ) for SN75462DR 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 SN75462DR reliable?
The price and inventory of SN75462DR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN75462DR is usually 5 days.
3.What payment methods are accepted for SN75462DR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN75462DR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SN75462DR?
SN75462DR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN75462DR 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 SN75462DR?
For technical support, including SN75462DR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN75462DR requirements.
6.How does Aetrix verify that SN75462DR is sourced from the original manufacturer or authorized distributors?
All SN75462DR 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 SN75462DR meets industry standards.
7.What is the process for return or replacement of SN75462DR?
All SN75462DR units undergo pre-shipment inspection (PSI). If there is an issue with SN75462DR, 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 SN75462DR part is unused and in its original packaging.
Return procedure for SN75462DR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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