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Texas Instruments SN75454BP
- Part No.:
- SN75454BP
- Manufacturer:
- Texas Instruments
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
SN75454BP.pdf
- Description:
- IC PERIPHERAL DRIVER 5.25V 8DIP
- Quantity:
- Payment:
- Shipping:
Inventory:3,604
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Product details
Overview
SN75454BP from Texas Instruments is a dual-peripheral NOR driver IC designed for high-current, high-speed switching in TTL-based systems. It delivers open-collector outputs with 300 mA continuous current capability, 30 V off-state output voltage tolerance, and operates across 0°C to 70°C. It drives lamps, LEDs, and line loads directly from microcontroller or logic-level inputs.
For engineers reviewing the SN75454BP datasheet, SN75454BP pinout, SN75454BP application, or SN75454BP equivalent, this page provides verified functional mode tables, thermal derating data, latch-up immunity confirmation at 20 V/300 mA, and precise logic truth table behavior for NOR operation under commercial temperature conditions.
Technical Context
The SN75454BP implements dual independent NOR gates whose outputs drive internal NPN transistors with diode-clamped TTL-compatible inputs. Each channel features open-collector output capable of sinking up to 300 mA with ≤0.7 V low-level saturation voltage at 300 mA and 5 V supply.
It operates strictly within 4.75 V–5.25 V supply range and requires no external pull-ups for logic-level compatibility. Its architecture avoids latch-up under 20 V transient stress while conducting rated current, enabling robust interfacing between low-voltage logic and higher-voltage peripherals.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Logic Function | Dual NOR gate with internally connected transistor drivers (positive logic: Y = A+B) |
| Output Current | 300 mA continuous sink per channel - supports direct driving of lamps, relays, and LED arrays |
| Off-State Voltage | 30 V maximum - enables interface with 24 V industrial loads without external level-shifting |
| Supply Voltage | 4.75 V to 5.25 V - tightly regulated for stable TTL-compatible operation in commercial systems |
| Propagation Delay | 27 ns typical (low-to-high), 24 ns typical (high-to-low) at 200 mA load - ensures timing-critical peripheral control |
| Operating Temperature | 0°C to 70°C - qualified for commercial-grade embedded and industrial control applications |
| Input Compatibility | TTL-compatible with VIH ≥ 2 V, VIL ≤ 0.8 V - interfaces directly with 5 V microcontrollers and logic families |
Pinout & Package
SN75454BP uses an 8-pin PDIP package (9.81 mm × 6.35 mm) with through-hole mounting. Pin functions are validated per TI SLRS021E datasheet Figure 5-1 and Table 5-1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1A | Channel 1 Logic Input A | First input to NOR gate 1; must be tied to GND or VCC if unused to prevent floating state |
| 1B | Channel 1 Logic Input B | Second input to NOR gate 1; determines active-low output assertion when both inputs are low |
| 1Y | Channel 1 Driver Output | Open-collector NPN emitter output - requires external pull-up to VSUP for load connection |
| GND | Ground Reference | Common return path for logic inputs, supply, and output current sinks |
| VCC | Supply Voltage | 5 V nominal power rail; bypassed with 0.1 µF capacitor per layout guidelines |
| 2A | Channel 2 Logic Input A | First input to NOR gate 2; electrically isolated from Channel 1 but shares same VCC/GND |
| 2B | Channel 2 Logic Input B | Second input to NOR gate 2; enables independent dual-channel control |
| 2Y | Channel 2 Driver Output | Independent open-collector output - supports separate high-voltage load on second channel |
Key Features
| Feature | Design Value |
|---|---|
| No latch-up at 20 V/300 mA | Guaranteed immunity to destructive latch-up during transient overvoltage events in real-world loads |
| Diode-clamped TTL inputs | Eliminates need for external clamping diodes or series resistors when interfacing with standard 5 V logic |
| Open-collector outputs | Enables wired-OR configurations, level translation up to 30 V, and flexible load grounding schemes |
| High-speed switching | Sub-30 ns propagation delays allow use in timing-sensitive applications such as strobe control and pulse generation |
| Standard 5 V supply | Direct compatibility with legacy TTL, CMOS, and MCU I/O without regulator or level-shifter circuitry |
Applications
| Lamp Driver | LED Driver |
|---|---|
Use Scenario: Driving incandescent or halogen indicator lamps in industrial HMI panels requiring 12–24 V operation. IC Role / Device Role / Timing Role: Dual-channel NOR driver acts as logic-controlled current sink, turning lamps ON when both inputs are low. Use Value: Eliminates discrete transistor stages; supports 300 mA per lamp without heatsinking at ambient temperatures ≤70°C. |
Use Scenario: Controlling high-brightness LED strings in signage or status indicators powered from 24 V rails. IC Role / Device Role / Timing Role: Provides TTL-compatible enable/disable control with fast turn-on/turn-off for PWM dimming. Use Value: Delivers 300 mA sink current per channel with <0.7 V VOL - minimizes power loss and thermal rise in LED current paths. |
| Line Driver | Memory Driver |
Use Scenario: Driving long PCB traces or cables carrying digital signals to remote modules in factory automation systems. IC Role / Device Role / Timing Role: Acts as buffered, high-current line driver with open-collector output for bus termination and noise immunity. Use Value: 30 V off-state rating allows safe interfacing with unterminated lines; sub-30 ns delays preserve signal integrity at >10 MHz edge rates. |
Use Scenario: Enabling/disabling memory chip select (CS) or output enable (OE) signals in 8-bit embedded systems with multiple RAM/ROM devices. IC Role / Device Role / Timing Role: NOR logic combines address bits to generate precise chip-select timing windows with minimal propagation skew. Use Value: Matched dual-channel delay (<2 ns skew) ensures synchronous activation of memory banks; TTL inputs simplify glue logic design. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-NOR peripheral driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN75452BP | NAND logic function instead of NOR; identical pinout, ratings, and package | Requires inverted input signals to achieve same output behavior; unsuitable where native NOR logic is required | Select SN75452BP only when system logic already provides complementary inputs or NAND-based control architecture |
| SN75453BP | OR logic function; otherwise matches SN75454BP in ratings, timing, and package | Outputs high when either input is high - incompatible with NOR-based enable/disable protocols | Choose SN75453BP only for applications needing OR-gated control, such as fault-or alarm aggregation |
Compared with SN75452BP and SN75453BP, the SN75454BP uniquely provides true NOR functionality - essential for active-low enable schemes where both inputs must be low to assert output - making it irreplaceable in designs relying on canonical NOR-based gating without additional inverters.
Availability
SN75454BP is available at Aetrix Electronics and suitable for lamp drivers, LED drivers, and line drivers requiring stable component supply in commercial-temperature industrial control systems.
Supply support for SN75454BP 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 decades of heritage in industrial and automotive-grade components.
The SN7545xB family was designed specifically for TTL-system interfacing - delivering robust, latch-up-free peripheral driving with integrated logic gates to reduce board space and improve reliability in commercial embedded applications.
FAQ
What logic function does the SN75454BP implement?
The SN75454BP implements dual independent NOR gates (positive logic: Y = A + B). When both inputs (1A and 1B or 2A and 2B) are low, the corresponding open-collector output (1Y or 2Y) pulls low to sink current. This behavior is confirmed in Table 8-4 of the TI SLRS021E datasheet and applies specifically to the SN75454BP variant.
Can the SN75454BP drive a 24 V relay coil directly?
Yes - the SN75454BP supports up to 30 V off-state output voltage and 300 mA continuous sink current per channel, making it suitable for direct 24 V relay coil driving. The output is open-collector, so the relay coil connects between VSUP (24 V) and 1Y or 2Y, with GND completing the path. Ensure coil current stays ≤300 mA and use flyback diode protection.
Does the SN75454BP require external pull-up resistors on its outputs?
Yes - because the SN75454BP has open-collector outputs, each 1Y and 2Y pin requires an external pull-up resistor to the load supply voltage (e.g., 24 V). The value depends on load current and speed requirements; typical values range from 1 kΩ to 10 kΩ. No pull-up is needed on inputs, as they are TTL-compatible with internal clamping.
What is the maximum operating temperature for the SN75454BP?
The SN75454BP is characterized for operation from 0°C to 70°C - the commercial temperature range. This is explicitly stated in the device comparison table (Section 4) and Recommended Operating Conditions (Section 6.2) of the TI SLRS021E datasheet. It is not rated for extended or military temperature ranges like the SN55454B variants.
How does the SN75454BP prevent latch-up during high-voltage transients?
The SN75454BP is characterized to withstand 20 V on its outputs while sinking 300 mA without latch-up - a key specification confirmed in the Features section and Absolute Maximum Ratings (Section 6.1). This immunity results from proprietary process and layout design, eliminating need for external protection in typical 24 V industrial switching applications.
SN75454BP Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-DIP (0.300", 7.62mm)
- Packaging:
- Bulk
- 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
SN75454BP FAQ
1.How can I place an order for SN75454BP through Aetrix?
Please submit a Request for Quotation (RFQ) for SN75454BP 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 SN75454BP reliable?
The price and inventory of SN75454BP are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN75454BP is usually 5 days.
3.What payment methods are accepted for SN75454BP?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN75454BP transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SN75454BP?
SN75454BP orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN75454BP 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 SN75454BP?
For technical support, including SN75454BP datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN75454BP requirements.
6.How does Aetrix verify that SN75454BP is sourced from the original manufacturer or authorized distributors?
All SN75454BP 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 SN75454BP meets industry standards.
7.What is the process for return or replacement of SN75454BP?
All SN75454BP units undergo pre-shipment inspection (PSI). If there is an issue with SN75454BP, 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 SN75454BP part is unused and in its original packaging.
Return procedure for SN75454BP:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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