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Texas Instruments SN75453BPSR
- Part No.:
- SN75453BPSR
- Manufacturer:
- Texas Instruments
- Package:
- 8-SOIC (0.209", 5.30mm Width)
- Datasheet:
-
SN75453BPSR.pdf
- Description:
- IC PERIPHERAL DRIVER 5.25V 8SO
- Quantity:
- Payment:
- Shipping:
Inventory:2,000
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Product details
Overview
SN75453BPSR from Texas Instruments is a dual OR-gate peripheral driver IC designed for high-current, high-speed switching in TTL-based systems. It delivers 300 mA per channel, supports up to 30 V output voltage, operates from 0°C to 70°C, and features open-collector outputs with diode-clamped TTL-compatible inputs - used in LED drivers, lamp drivers, and line drivers.
For engineers reviewing the SN75453BPSR datasheet, SN75453BPSR pinout, SN75453BPSR application, or SN75453BPSR equivalent, key selection criteria include its OR logic function, 300 mA sink capability per channel, 30 V off-state output rating, SO (PS) 8-pin package, and commercial-temperature operation without latch-up at 20 V after conducting full rated current.
Technical Context
The SN75453BPSR implements dual independent OR logic gates whose outputs drive internal NPN transistors in open-collector configuration. Each channel sinks up to 300 mA with VCE(sat) ≤ 0.7 V at IC = 300 mA and TA = 25°C, enabling direct interfacing with inductive or resistive loads.
Input logic thresholds are TTL-compatible (VIL ≤ 0.8 V, VIH ≥ 2.0 V), and the device guarantees no latch-up at 20 V after conducting 300 mA. Propagation delays are 18–25 ns (low-to-high/high-to-low) under 5 V/25°C conditions with 15 pF load.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Logic Function | Dual OR gate with open-collector NPN output stage per channel |
| Max Output Current | 300 mA per channel - sufficient to directly drive LEDs, relays, or lamps without external buffers |
| Output Voltage Rating | 30 V off-state - enables interface with 24 V industrial loads and legacy bus systems |
| Supply Voltage | 4.75 V to 5.25 V - tightly regulated 5 V TTL rail compatibility |
| Propagation Delay | 18–25 ns at VCC = 5 V, TA = 25°C - supports high-speed digital control timing |
| Operating Temperature | 0°C to 70°C - qualified for commercial-grade embedded and industrial control applications |
| VOL @ 300 mA | ≤ 0.7 V - ensures low power loss and minimal voltage drop across output transistor |
Pinout & Package
SN75453BPSR uses an 8-pin SO (Small Outline) package (PS), body size 6.20 mm × 5.30 mm, with gull-wing leads and RoHS-compliant NiPdAu finish. Pinout is identical to standard 8-pin SOIC but with wider body and specific lead pitch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1A | Channel 1 Logic Input A | TTL-level input for first OR gate; must be terminated to avoid floating |
| 1B | Channel 1 Logic Input B | TTL-level input for first OR gate; both 1A and 1B high → 1Y active low |
| 1Y | Channel 1 Open-Collector Output | Sinks current when enabled; requires external pull-up to load supply (e.g., 24 V) |
| GND | Ground Reference | Common return path for logic and output current; decoupling capacitor recommended |
| VCC | Logic Supply | 5 V TTL supply only; not connected to load voltage - isolates logic and power domains |
| 2A | Channel 2 Logic Input A | Independent TTL input for second OR gate; electrically isolated from Channel 1 |
| 2B | Channel 2 Logic Input B | Second input for Channel 2 OR function; unused inputs must be tied to VCC or GND |
| 2Y | Channel 2 Open-Collector Output | Independent sink output; supports simultaneous switching with 1Y under thermal limits |
Key Features
| Feature | Design Value |
|---|---|
| No latch-up at 20 V | Guaranteed immunity to destructive latch-up after conducting 300 mA - eliminates need for external protection circuitry |
| Diode-clamped TTL inputs | Internal clamping diodes allow direct connection to 5 V logic without series resistors or external protection |
| High-speed switching | Sub-25 ns propagation delay enables use in timing-critical control loops and pulse-width modulation interfaces |
| Open-collector flexibility | Supports wired-OR configurations, level translation up to 30 V, and mixed-voltage system interfacing |
| Thermal robustness | RθJA = 119.6°C/W (SO PS) allows 300 mA operation at 70°C ambient with minimal heatsinking |
Applications
| LED Driver | Lamp Driver |
|---|---|
Use Scenario: Driving multiple indicator LEDs or high-brightness status LEDs from a microcontroller GPIO. IC Role / Device Role / Timing Role: Acts as a current-sinking buffer between low-voltage MCU outputs and 5–24 V LED strings. Use Value: Enables direct 300 mA sink per channel without external MOSFETs; simplifies BOM and layout while maintaining TTL compatibility. | Use Scenario: Controlling incandescent or halogen panel lamps in industrial HMIs or test equipment. IC Role / Device Role / Timing Role: Provides robust, transient-tolerant switching of resistive lamp loads with fast turn-on/off response. Use Value: Eliminates relay wear-out and mechanical delay; supports PWM dimming via logic-level input control. |
| Line Driver | Memory Driver |
Use Scenario: Driving long PCB traces or backplane lines requiring higher current than standard logic can deliver. IC Role / Device Role / Timing Role: Boosts signal integrity on unterminated or capacitive-loaded buses by sourcing/sinking >200 mA peak current. Use Value: Maintains clean edges and reduces rise/fall time degradation over 15 pF+ loads - critical for reliable data transmission. | Use Scenario: Enabling/disabling memory chip select or output enable signals in legacy SRAM or EPROM subsystems. IC Role / Device Role / Timing Role: Serves as a high-current gate for memory control lines that require fast, low-VOL assertion. Use Value: Ensures sub-0.7 V logic-low voltage even under 300 mA load - guarantees valid memory access timing margins. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual OR-gate driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN75453BD | Same OR logic, 300 mA rating, but in narrower SOIC (D) package (4.90 mm × 3.90 mm); RθJA = 122.2°C/W | Higher thermal resistance limits sustained 300 mA operation at elevated ambient vs. PS package | Select SN75453BD only if board space is constrained and thermal margin permits |
| SN75452BPSR | NAND logic instead of OR; otherwise identical pinout, ratings, and SO (PS) package | Requires inverted logic design - e.g., active-low enable vs. active-high OR behavior | Choose SN75452BPSR only when NAND truth table matches system control architecture |
Compared with SN75453BD and SN75452BPSR, SN75453BPSR offers optimal thermal performance in the SO (PS) footprint for OR-based control, avoids logic inversion overhead, and maintains full 300 mA capability across its 0°C–70°C range without derating.
Availability
SN75453BPSR is available at Aetrix Electronics and suitable for LED drivers, lamp drivers, and line drivers requiring stable component supply, long-term industrial availability, and RoHS-compliant packaging.
Supply support for SN75453BPSR 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 broad industrial and automotive qualification.
The SN7545xB family was designed specifically for TTL-system peripheral interfacing - delivering robust, latch-up-free, high-current switching where microcontrollers or logic devices lack native drive strength.
FAQ
What logic function does the SN75453BPSR implement?
The SN75453BPSR implements two independent OR gates. When either input (1A or 1B) is high, output 1Y is pulled low (active-low open-collector). The same applies to inputs 2A/2B and output 2Y. This OR behavior is confirmed in Table 8-3 of the TI datasheet and matches the SN75453B designation within the SN7545xB family.
Can SN75453BPSR drive a 24 V lamp directly?
Yes. SN75453BPSR supports up to 30 V off-state output voltage and sinks up to 300 mA per channel. With a 24 V pull-up on 1Y or 2Y, it can directly switch lamps drawing ≤300 mA. Ensure VCC remains at 5 V and add a flyback diode for inductive loads.
Does SN75453BPSR require external pull-up resistors on its outputs?
Yes. SN75453BPSR has open-collector outputs (1Y and 2Y), so external pull-up resistors - or direct connection to a load supply (e.g., 24 V) - are mandatory to establish a valid high state. The value depends on load current and voltage; typical values range from 1 kΩ to 10 kΩ.
What is the maximum continuous current per channel for SN75453BPSR?
The maximum continuous collector current per channel is 300 mA, specified under Recommended Operating Conditions. Absolute maximum rating is 400 mA, but sustained operation above 300 mA risks exceeding thermal limits in the SO (PS) package, especially above 50°C ambient.
Is SN75453BPSR pin-compatible with SN75451BPSR or SN75452BPSR?
Yes. All SN7545xBPSR variants (including SN75451BPSR, SN75452BPSR, SN75453BPSR, SN75454BPSR) share identical 8-pin SO (PS) pinouts and package dimensions. Only the internal logic function differs - AND, NAND, OR, or NOR - allowing drop-in replacement when logic requirements align.
SN75453BPSR 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
SN75453BPSR FAQ
1.How can I place an order for SN75453BPSR through Aetrix?
Please submit a Request for Quotation (RFQ) for SN75453BPSR 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 SN75453BPSR reliable?
The price and inventory of SN75453BPSR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN75453BPSR is usually 5 days.
3.What payment methods are accepted for SN75453BPSR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN75453BPSR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SN75453BPSR?
SN75453BPSR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN75453BPSR 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 SN75453BPSR?
For technical support, including SN75453BPSR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN75453BPSR requirements.
6.How does Aetrix verify that SN75453BPSR is sourced from the original manufacturer or authorized distributors?
All SN75453BPSR 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 SN75453BPSR meets industry standards.
7.What is the process for return or replacement of SN75453BPSR?
All SN75453BPSR units undergo pre-shipment inspection (PSI). If there is an issue with SN75453BPSR, 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 SN75453BPSR part is unused and in its original packaging.
Return procedure for SN75453BPSR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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