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Texas Instruments SN75453BPE4
- Part No.:
- SN75453BPE4
- Manufacturer:
- Texas Instruments
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
SN75453BPE4.pdf
- Description:
- 30-V DUAL OUTPUT DRIVER WITH OR
- Quantity:
- Payment:
- Shipping:
Inventory:3,340
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Product details
Overview
SN75453BPE4 from Texas Instruments is a dual OR-gate peripheral 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, and features open-collector outputs with diode-clamped TTL inputs - used in LED drivers, lamp drivers, and line drivers.
For engineers reviewing the SN75453BPE4 datasheet, SN75453BPE4 pinout, SN75453BPE4 application, or SN75453BPE4 equivalent, this page provides verified functional modes, thermal limits, switching characteristics at 5 V/25°C, latch-up immunity data, and precise package mapping to PDIP-8.
Technical Context
The SN75453BPE4 implements dual positive-logic OR gates whose outputs drive NPN transistor-based open-collector drivers. Each channel accepts two TTL-level inputs (1A/1B or 2A/2B) and pulls its output low (1Y/2Y) when either input is high - enabling direct interface with microcontrollers driving high-voltage or high-current loads.
It uses internal base resistors (1 kΩ, 4 kΩ, 1.6 kΩ) and emitter degeneration to ensure stable saturation at 300 mA while preventing latch-up up to 20 V. The device requires no external pull-ups on outputs and is characterized for commercial temperature operation only (0°C to 70°C).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Logic Function | Dual OR gate with internally connected outputs to NPN driver transistors |
| Output Current (per channel) | 300 mA continuous - sufficient to drive LEDs, relays, or small solenoids directly |
| Output Voltage Rating | 30 V off-state - enables interface with 24 V industrial loads without external level-shifting |
| Input Compatibility | TTL diode-clamped inputs - eliminates need for external clamping diodes in 5 V logic systems |
| Propagation Delay | 18–25 ns (low-to-high/high-to-low) at 5 V/25°C - supports >20 MHz switching in buffered applications |
| Supply Voltage Range | 4.75 V to 5.25 V - tightly regulated for stable TTL interfacing and noise margin compliance |
| Thermal Resistance (RθJA) | 63.7 °C/W (PDIP-8) - defines maximum power dissipation (640 mW at 70°C ambient) before derating |
Pinout & Package
SN75453BPE4 is housed in an 8-pin plastic dual in-line package (PDIP), body size 9.81 mm × 6.35 mm, with through-hole mounting and RoHS-compliant NiPdAu lead finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1A | Channel 1 Logic Input A | TTL-compatible input; must be tied to GND or VCC if unused to prevent floating state |
| 1B | Channel 1 Logic Input B | Second TTL input for OR function; both 1A and 1B high → 1Y pulled low |
| 1Y | Channel 1 Open-Collector Output | Sinks up to 300 mA; requires external pull-up to load supply (e.g., 24 V) |
| GND | Ground Reference | Common return path for logic and output current; critical for latch-up immunity |
| VCC | Positive Supply | 5 V ±0.25 V supply; bypassed with 0.1 µF capacitor near pin to suppress switching noise |
| 2B | Channel 2 Logic Input B | Independent second OR gate input; electrically isolated from Channel 1 |
| 2A | Channel 2 Logic Input A | Primary input for Channel 2 OR function; same electrical specs as 1A/1B |
| 2Y | Channel 2 Open-Collector Output | Independent sink output; supports simultaneous 300 mA switching per channel |
Key Features
| Feature | Design Value |
|---|---|
| No latch-up at 20 V | Guaranteed immunity to destructive latch-up when sinking 300 mA - eliminates need for external current limiting during fault conditions |
| Diode-clamped TTL inputs | Internal clamping diodes protect against input overvoltage and simplify board-level ESD protection design |
| High-speed switching | 25 ns typical propagation delay enables use in timing-critical buffer and strobe applications up to 20 MHz |
| Open-collector outputs | Allows wired-OR logic, level translation, and direct connection to loads referenced to higher voltages (e.g., 24 V) |
| Standard 5 V supply | Operates within tight 4.75–5.25 V window - ensures compatibility with legacy TTL and modern 5 V MCU I/O |
Applications
| LED Driver | Lamp Driver |
|---|---|
Use Scenario: Driving multiple 20 mA LEDs from a 5 V microcontroller GPIO with common-anode configuration. IC Role / Device Role / Timing Role: Dual OR gate acts as active-low enable for each LED string; 1Y/2Y sink current directly. Use Value: Eliminates need for discrete transistors and base resistors - reduces BOM count and PCB area by 60% vs. discrete solution. |
Use Scenario: Controlling 12 V incandescent indicator lamps in industrial HMI panels using 5 V logic signals. IC Role / Device Role / Timing Role: Acts as level-translating buffer and current amplifier; each channel drives one lamp via open-collector output. Use Value: Supports 300 mA per lamp - handles inrush current of cold filaments without external boost circuitry. |
| Line Driver | Memory Driver |
Use Scenario: Driving long PCB traces or cables carrying TTL-level signals to remote peripherals in noisy factory environments. IC Role / Device Role / Timing Role: High-current buffer strengthens signal integrity; open-collector outputs allow bus termination with single pull-up resistor. Use Value: 25 ns propagation delay preserves timing margins in 10–20 MHz address/data buses; 30 V rating prevents damage from induced transients. |
Use Scenario: Enabling write strobes or chip-select lines for parallel SRAM or EPROM in legacy embedded systems. IC Role / Device Role / Timing Role: Dual OR gate combines control signals (e.g., /WE + /CS) to generate robust active-low enable pulses. Use Value: TTL-compatible inputs accept standard memory controller outputs; 300 mA sink capability ensures fast, clean edge transitions into capacitive loads. |
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 | SOIC-8 package; RθJA = 122.2 °C/W; same electrical specs and logic function | Surface-mount assembly required; better thermal performance at board level due to lower junction-to-board resistance | Select for automated SMT production or space-constrained layouts where through-hole is impractical |
| SN75452BPE4 | NAND logic function instead of OR; identical pinout, package, and drive capability | Requires inverted control signals; suitable where active-low enable logic matches system architecture | Choose when existing firmware or hardware already implements NAND-based enable sequencing |
Compared with SN75453BPE4, SN75453BD offers superior thermal management in dense layouts but requires rework for through-hole prototyping, while SN75452BPE4 retains mechanical compatibility but changes logic polarity - necessitating signal inversion in control firmware.
Availability
SN75453BPE4 is available at Aetrix Electronics and suitable for LED drivers, lamp drivers, and line drivers requiring stable component supply across industrial control, test equipment, and legacy embedded systems.
Supply support for SN75453BPE4 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 for industrial, automotive, and communications markets.
The SN7545xB family was developed to replace legacy SN75450-series drivers with enhanced latch-up immunity and tighter parametric control - targeting high-reliability TTL-buffering and peripheral-driving applications in commercial environments.
FAQ
What logic function does the SN75453BPE4 implement?
The SN75453BPE4 implements two independent positive-logic OR gates. When either input (1A or 1B) is high, output 1Y is pulled low; same behavior applies to inputs 2A/2B and output 2Y. This is confirmed in Table 8-3 and Figure 8-7 of the official datasheet. The SN75453BPE4 does not perform AND, NAND, or NOR functions - those are implemented by other members of the SN7545xB family.
Can the SN75453BPE4 drive a 24 V relay coil directly?
Yes, the SN75453BPE4 can drive a 24 V relay coil directly using its open-collector outputs. With a 24 V pull-up on 1Y or 2Y, the device sinks up to 300 mA while maintaining VOH ≤ 0.7 V at 300 mA (per Section 6.4). Its 30 V off-state output rating and latch-up immunity at 20 V make it suitable for such inductive loads - provided flyback diodes are used externally across the coil.
What is the maximum operating temperature for the SN75453BPE4?
The SN75453BPE4 is characterized for operation from 0°C to 70°C ambient temperature, as specified in Section 4 (Device Comparison Table) and Section 6.2 (Recommended Operating Conditions). This commercial-grade rating distinguishes it from the military-grade SN55453B variants, which operate from –55°C to 125°C. Exceeding 70°C ambient risks exceeding the 150°C junction limit under load.
Does the SN75453BPE4 require external pull-up resistors on its outputs?
Yes, the SN75453BPE4 requires external pull-up resistors on pins 1Y and 2Y because they are open-collector outputs. Without pull-ups, outputs remain floating when inactive. Typical values range from 1 kΩ to 10 kΩ depending on load voltage and speed requirements. The datasheet Figure 9-1 shows explicit use of pull-ups to VSUP (e.g., 24 V) for high-voltage peripheral driving.
Is the SN75453BPE4 pin-compatible with the SN75451BPE4?
Yes, the SN75453BPE4 is pin-compatible with SN75451BPE4, SN75452BPE4, and SN75454BPE4 - all share identical PDIP-8 pinout (1A, 1B, 1Y, GND, VCC, 2B, 2A, 2Y) and package dimensions. However, logic functions differ: SN75451B is AND, SN75452B is NAND, SN75453B is OR, SN75454B is NOR. Swapping requires verifying control signal polarity in firmware or hardware.
SN75453BPE4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-DIP (0.300", 7.62mm)
- Packaging:
- Tube
- 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:
- Through Hole
- Supplier Device Package:
- 8-PDIP
SN75453BPE4 FAQ
1.How can I place an order for SN75453BPE4 through Aetrix?
Please submit a Request for Quotation (RFQ) for SN75453BPE4 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 SN75453BPE4 reliable?
The price and inventory of SN75453BPE4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN75453BPE4 is usually 5 days.
3.What payment methods are accepted for SN75453BPE4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN75453BPE4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SN75453BPE4?
SN75453BPE4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN75453BPE4 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 SN75453BPE4?
For technical support, including SN75453BPE4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN75453BPE4 requirements.
6.How does Aetrix verify that SN75453BPE4 is sourced from the original manufacturer or authorized distributors?
All SN75453BPE4 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 SN75453BPE4 meets industry standards.
7.What is the process for return or replacement of SN75453BPE4?
All SN75453BPE4 units undergo pre-shipment inspection (PSI). If there is an issue with SN75453BPE4, 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 SN75453BPE4 part is unused and in its original packaging.
Return procedure for SN75453BPE4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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