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Texas Instruments SN75454BPSR
- Part No.:
- SN75454BPSR
- Manufacturer:
- Texas Instruments
- Package:
- 8-SOIC (0.209", 5.30mm Width)
- Datasheet:
-
SN75454BPSR.pdf
- Description:
- IC PERIPHERAL DRIVER 5.25V 8SO
- Quantity:
- Payment:
- Shipping:
Inventory:1,941
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Product details
Overview
SN75454BPSR from Texas Instruments is a dual-peripheral NOR driver IC designed for high-current, high-speed switching in TTL-compatible systems. It delivers 300 mA per channel, supports up to 30 V output voltage, operates from 0°C to 70°C, features open-collector outputs with diode-clamped TTL inputs, and is used in LED drivers, lamp drivers, and logic-level peripheral interfacing.
For engineers reviewing the SN75454BPSR datasheet, SN75454BPSR pinout, SN75454BPSR application, or SN75454BPSR equivalent, this page provides verified specifications, functional mode details, package-validated pin functions, real-world use scenarios, and two confirmed alternative parts for commercial-temperature NOR driver applications.
Technical Context
The SN75454BPSR implements dual independent NOR logic gates whose outputs drive internal NPN transistors with open-collector configuration. Each channel accepts TTL-compatible inputs (VIH = 2 V, VIL = 0.8 V) and sinks up to 300 mA continuously while maintaining VOH ≥ VS – 6.5 V at 300 mA load.
Its logic function follows positive-logic NOR behavior: output Y is low (active sink) when either input A or B is high; output is high-impedance only when both A and B are low. The device avoids latch-up under 20 V/300 mA stress and uses internal base resistors for direct TTL interfacing without external biasing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Logic Function | NOR gate per channel - active-low output sink enables direct control of LEDs, relays, or lamps without external inverters. |
| Output Current (Continuous) | 300 mA per channel - sufficient to drive medium-power LEDs, solenoids, or small relays directly from logic-level signals. |
| Max Output Voltage | 30 V - supports industrial loads like 24 V DC lamps or indicator banks without level-shifting circuitry. |
| Input Compatibility | TTL diode-clamped - accepts standard 5 V logic levels and tolerates transient overvoltage via integrated clamping diodes. |
| Propagation Delay | 27–35 ns (tPLH/tPHL) at 5 V/25°C - enables reliable operation in high-speed digital control loops up to ~15 MHz. |
| Operating Temperature | 0°C to 70°C - qualified for commercial-grade embedded systems, consumer electronics, and industrial HMI panels. |
| Supply Voltage Range | 4.75 V to 5.25 V - tightly regulated 5 V rail required; not suitable for wide-input or battery-powered 3.3 V systems. |
Pinout & Package
SN75454BPSR is housed in an 8-pin SO (Small Outline) package (PS), body size 6.20 mm × 5.30 mm, RoHS-compliant with NiPdAu lead finish and moisture sensitivity level (MSL) Level-1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1A | Channel 1 Input A | TTL-compatible logic input; must be tied to GND or VCC if unused to prevent floating and undefined output state. |
| 1B | Channel 1 Input B | Second TTL input for NOR function; both 1A and 1B must be low to place 1Y in high-impedance state. |
| 1Y | Channel 1 Open-Collector Output | Sinks current when active (low); requires external pull-up to load supply (e.g., 24 V) for voltage translation. |
| GND | Ground Reference | Common return path for logic inputs and output emitter terminals; critical for noise immunity and latch-up prevention. |
| VCC | Logic Supply | 5 V ± 0.25 V power for internal logic and input clamps; bypass with 0.1 µF capacitor near pin per layout guidelines. |
| 2A | Channel 2 Input A | Independent NOR input; electrically isolated from Channel 1 but shares same VCC and GND. |
| 2B | Channel 2 Input B | Second input for Channel 2 NOR gate; identical electrical characteristics to 1A/1B. |
| 2Y | Channel 2 Open-Collector Output | Functionally identical to 1Y; supports independent high-voltage load control on second channel. |
Key Features
| Feature | Design Value |
|---|---|
| No latch-up at 20 V / 300 mA | Guarantees robust operation during inductive load switching or transient overvoltage events without destructive failure. |
| Diode-clamped TTL inputs | Eliminates need for external input protection diodes or series resistors when interfacing with standard 5 V logic families. |
| Open-collector outputs | Enables wired-OR logic, mixed-voltage interfacing (e.g., 5 V logic controlling 24 V lamps), and simplified load connection. |
| High-speed switching (≤35 ns) | Supports fast digital control of peripherals such as multiplexed LED arrays or stepper motor phase drivers. |
| Characterized for 0°C to 70°C | Validated performance across full commercial temperature range - suitable for non-military, non-automotive end equipment. |
Applications
| LED Driver | Lamp Driver |
|---|---|
|
Use Scenario: Driving multiple 20 mA red/green LEDs in a status panel with shared 5 V logic and separate 12 V LED supply. IC Role / Device Role / Timing Role: SN75454BPSR acts as a dual-channel NOR-controlled current sink, enabling independent on/off control of two LED groups using MCU GPIOs. Use Value: Eliminates discrete transistor + resistor stages; reduces BOM count by 4 components per channel while maintaining TTL compatibility and thermal safety. |
Use Scenario: Controlling 24 V incandescent pilot lamps in industrial control cabinets where PLC outputs are 5 V TTL. IC Role / Device Role / Timing Role: SN75454BPSR serves as a logic-level translator and current amplifier, sinking lamp current through open-collector outputs pulled up to 24 V. Use Value: Provides galvanic separation between logic and load domains; withstands lamp inrush currents up to 300 mA without derating or heatsinking. |
| Logic Buffer | Line Driver |
|
Use Scenario: Boosting fan-out capability of a microcontroller's GPIO to drive multiple 74LS-series inputs in a test fixture. IC Role / Device Role / Timing Role: SN75454BPSR functions as a dual-NOR buffer with high-current drive, ensuring signal integrity across 10+ LS-TTL loads. Use Value: Delivers 300 mA sink current per output - exceeds standard TTL fan-out limits and prevents logic threshold violations under capacitive loading. |
Use Scenario: Driving a 50 Ω coaxial line carrying TTL-level clock or trigger signals over 1 m distance in lab instrumentation. IC Role / Device Role / Timing Role: SN75454BPSR operates as a low-impedance line driver with <35 ns propagation delay, minimizing signal rise/fall time degradation. Use Value: Achieves clean edge transitions (tTLH/tTHL ≤ 8/12 ns) into 15 pF + 50 Ω loads - critical for jitter-sensitive timing distribution. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar NOR driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN75452BD | NAND logic function instead of NOR; identical pinout, specs, and SOIC-8 package. | Requires inverted input signals to replicate NOR behavior; unsuitable for direct drop-in replacement without logic redesign. | Select SN75452BD only when system design already uses NAND-based control logic or when inverting inputs is acceptable. |
| ULN2003ADR | Seven-channel Darlington array; higher VCE(sat) (~1.2 V), lower speed (1 µs typical), no logic gates - pure open-collector sink. | Supports more channels but lacks built-in NOR logic; requires external gates for combinational control; better for high-VCE tolerance (>50 V). | Choose ULN2003ADR for multi-load applications needing >300 mA per channel or >50 V load voltage, accepting slower switching and no logic integration. |
Compared with SN75452BD and ULN2003ADR, the SN75454BPSR uniquely integrates NOR logic with high-speed, high-current open-collector outputs in a compact SO-8 package - making it optimal for space-constrained designs requiring direct TTL-to-high-voltage translation with minimal external components.
Availability
SN75454BPSR is available at Aetrix Electronics and suitable for LED driver modules, industrial lamp control systems, and high-speed logic buffer circuits requiring stable component supply and long-term commercial-temperature reliability.
Supply support for SN75454BPSR 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 90 years of innovation in high-reliability interface and driver ICs.
The SN7545xB family was engineered to replace legacy SN75450-series drivers with enhanced latch-up immunity and consistent 300 mA drive capability - targeting industrial control, instrumentation, and legacy-system upgrades.
FAQ
What logic function does the SN75454BPSR implement?
The SN75454BPSR implements a dual NOR gate function: each channel outputs a low (active sink) when either input A or B is high, and presents high-impedance only when both inputs are low. This matches positive-logic NOR behavior as defined in Table 8-4 of the datasheet, and is distinct from AND, NAND, or OR variants in the same SN7545xB family.
Can the SN75454BPSR drive a 24 V lamp directly?
Yes, the SN75454BPSR can drive a 24 V lamp directly using its open-collector outputs: connect the lamp between +24 V and the 1Y or 2Y pin, with GND as common return. The device supports up to 30 V off-state output voltage and 300 mA continuous sink current - sufficient for typical 24 V pilot lamps drawing ≤200 mA.
What is the maximum recommended supply voltage for the SN75454BPSR?
The SN75454BPSR requires a nominal 5 V supply with strict regulation: the recommended operating range is 4.75 V to 5.25 V. Exceeding 5.25 V violates Absolute Maximum Ratings (VCC max = 5.5 V), risks parametric shift, and may accelerate electromigration in internal traces - always use a well-regulated 5 V source with local 0.1 µF bypass capacitance.
Does the SN75454BPSR require external base resistors for TTL input interfacing?
No, the SN75454BPSR does not require external base resistors. Its inputs are diode-clamped and internally biased for direct TTL compatibility - verified by VIH = 2 V and VIL = 0.8 V thresholds and specified IIH/IIL values. External resistors are unnecessary unless implementing custom current limiting for non-standard input sources.
Is the SN75454BPSR pin-compatible with other SN7545xB variants?
Yes, all SN7545xB variants (including SN75451B, SN75452B, SN75453B, and SN75454B) share identical 8-pin SO (PS), SOIC (D), PDIP (P), and CDIP (JG) packages and pinouts. The SN75454BPSR uses the same pin configuration as SN75451BPSR or SN75452BPSR - only the internal logic function differs, requiring no PCB changes when substituting within the same package variant.
SN75454BPSR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-SOIC (0.209", 5.30mm 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:
- Open Collector
- Current - Output High, Low:
- 100µA, 300mA
- Voltage - Supply:
- 4.75V ~ 5.25V
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SO
SN75454BPSR FAQ
1.How can I place an order for SN75454BPSR through Aetrix?
Please submit a Request for Quotation (RFQ) for SN75454BPSR 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 SN75454BPSR reliable?
The price and inventory of SN75454BPSR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN75454BPSR is usually 5 days.
3.What payment methods are accepted for SN75454BPSR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN75454BPSR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SN75454BPSR?
SN75454BPSR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN75454BPSR 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 SN75454BPSR?
For technical support, including SN75454BPSR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN75454BPSR requirements.
6.How does Aetrix verify that SN75454BPSR is sourced from the original manufacturer or authorized distributors?
All SN75454BPSR 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 SN75454BPSR meets industry standards.
7.What is the process for return or replacement of SN75454BPSR?
All SN75454BPSR units undergo pre-shipment inspection (PSI). If there is an issue with SN75454BPSR, 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 SN75454BPSR part is unused and in its original packaging.
Return procedure for SN75454BPSR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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