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Texas Instruments SN75454BPG4
- Part No.:
- SN75454BPG4
- Manufacturer:
- Texas Instruments
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
SN75454BPG4.pdf
- Description:
- IC PERIPHERAL DRIVER 5.25V 8DIP
- Quantity:
- Payment:
- Shipping:
Inventory:2,952
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Product details
Overview
SN75454BPG4 from Texas Instruments is a dual-peripheral NOR driver IC designed for high-current, high-speed switching in TTL-based systems. It delivers 300mA per channel, supports up to 30V output voltage, operates from 0°C to 70°C, features open-collector outputs with diode-clamped TTL-compatible inputs, and is used in LED drivers and industrial lamp control circuits.
For engineers reviewing the SN75454BPG4 datasheet, SN75454BPG4 pinout, SN75454BPG4 application, or SN75454BPG4 equivalent, this page provides verified specifications, functional mode details, package mapping to PDIP-8, real-world use cases, and two validated alternative parts for NOR logic driver selection in commercial-temperature embedded power interface designs.
Technical Context
The SN75454BPG4 implements dual independent NOR gates whose outputs drive integrated NPN transistors with open-collector configuration. Each channel's logic function follows Y = A + B (positive logic), enabling active-low output conduction when either input is high.
It operates at VCC = 4.75–5.25 V, exhibits propagation delays of 27–35 ns (tPLH/tPHL) and transition times of 5–12 ns at 25°C, and maintains latch-up immunity up to 20V after conducting 300mA - confirmed across its full commercial temperature range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 4.75 V to 5.25 V - ensures compatibility with standard 5-V TTL and microcontroller I/O rails |
| Output Current | 300 mA per channel - sufficient to directly drive LEDs, relays, or small solenoids without external amplification |
| Output Voltage Max | 30 V - enables direct interfacing with industrial 24-V loads and legacy lamp circuits |
| Propagation Delay | 27–35 ns - supports high-speed digital buffering and timing-critical peripheral enable/disable sequencing |
| Logic Function | NOR (Y = A + B) - provides active-low output assertion when either input is high, ideal for OR-gated shutdown or alarm conditions |
| Operating Temp | 0°C to 70°C - qualified for commercial-grade embedded systems including office equipment and consumer electronics |
| Input Compatibility | TTL-level (VIH ≥ 2 V, VIL ≤ 0.8 V) - allows seamless connection to 74LS, 74HC, and MCU GPIO without level-shifting |
Pinout & Package
SN75454BPG4 is supplied in an 8-pin PDIP (Plastic Dual In-line Package) with 9.81 mm × 6.35 mm body size and through-hole mounting. Pin 1 is marked by a notch or dot; pin numbering follows standard DIP convention (counterclockwise from top-left).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1A | Channel 1 Input A | First NOR gate input - must be tied to VCC or GND if unused to prevent floating logic state |
| 1B | Channel 1 Input B | Second NOR gate input - determines channel 1 output conduction via positive-logic NOR truth table |
| 1Y | Channel 1 Output | Open-collector NPN emitter output - requires external pull-up to load supply (e.g., 24 V) for active-high operation |
| GND | Ground Reference | Common return path for logic inputs and transistor emitters - must be low-impedance for stable switching |
| VCC | Supply Voltage | +5 V logic supply - bypassed with 0.1 µF capacitor near pin to suppress switching noise |
| 2A | Channel 2 Input A | Independent NOR gate input - electrically isolated from Channel 1 for dual-function control |
| 2B | Channel 2 Input B | Second input for Channel 2 - enables separate logic control of second high-side or low-side load |
| 2Y | Channel 2 Output | Second open-collector output - shares same electrical characteristics and layout requirements as 1Y |
Key Features
| Feature | Design Value |
|---|---|
| 300-mA per-channel drive | Eliminates need for discrete transistor stages when driving medium-power lamps, LEDs, or relay coils |
| No latch-up at 20 V | Ensures robust operation during transient overvoltage events common in industrial load switching |
| Diode-clamped TTL inputs | Prevents input damage from overshoot/undershoot and simplifies PCB routing with no external clamping required |
| High-speed switching (≤35 ns) | Supports clean digital edge transitions in applications requiring precise timing alignment with system clocks |
| Open-collector outputs | Enables wired-OR logic, mixed-voltage interfacing (e.g., 5-V logic controlling 24-V loads), and flexible pull-up selection |
Applications
| LED Driver | Lamp Driver |
|---|---|
Use Scenario: Driving multiple indicator LEDs from a 5-V microcontroller while maintaining brightness consistency across varying forward voltages. IC Role / Device Role / Timing Role: SN75454BPG4 acts as a dual-channel current-sinking buffer, converting MCU GPIO logic levels into controlled 300-mA sink paths for LEDs. Use Value: Eliminates external current-limiting resistors per LED and supports direct 24-V LED strings via open-collector pull-up configuration. | Use Scenario: Controlling incandescent or halogen panel lamps in test equipment where 24-V supplies are standard and EMI-sensitive timing is not required. IC Role / Device Role / Timing Role: SN75454BPG4 serves as a ruggedized logic-to-power interface, using its NOR function to enable lamp activation only when both safety interlocks are closed. Use Value: Leverages 30-V output rating and latch-up immunity to withstand lamp inrush currents and contact bounce without protection circuitry. |
| Line Driver | Memory Driver |
Use Scenario: Transmitting TTL-compatible signals over longer PCB traces or cables in industrial control backplanes subject to capacitive loading. IC Role / Device Role / Timing Role: SN75454BPG4 functions as a high-current line driver, sourcing/sinking >20 mA to overcome trace capacitance and maintain signal integrity. Use Value: Achieves reliable edge rates (≤35 ns) even with 15-pF load capacitance, reducing bit errors in asynchronous parallel bus communication. | Use Scenario: Enabling/disabling memory chip select lines in legacy 8-bit embedded systems where address decoding requires NOR-based gating. IC Role / Device Role / Timing Role: SN75454BPG4 implements hardware-select logic for SRAM or EPROM chips, asserting active-low CS when address bits match decoded pattern. Use Value: Provides deterministic propagation delay and guaranteed 300-mA sink capability to meet memory access timing windows under worst-case VCC and temperature. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar NOR logic driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN75452BD | NAND logic function instead of NOR; identical pinout, ratings, and package | Requires inverted input signals to replicate NOR behavior; unsuitable where native NOR truth table is required | Select only if system logic can accommodate NAND-based implementation with signal inversion |
| ULN2003A | Seven-channel Darlington array; higher VCE(sat) (~1.2 V), lower speed (1 µs typical), no logic gates | Used for simple sinking without logic; lacks on-chip NOR functionality and high-speed performance | Choose when multi-channel sinking is needed without logic, or when higher saturation voltage is acceptable |
Compared with SN75452BD and ULN2003A, SN75454BPG4 uniquely delivers native NOR logic with sub-35-ns timing and 30-V tolerance in a compact PDIP-8 package - making it optimal for space-constrained, timing-sensitive dual-NOR peripheral enable applications.
Availability
SN75454BPG4 is available at Aetrix Electronics and suitable for LED drivers, lamp drivers, and line drivers requiring stable component supply in commercial-temperature industrial control and instrumentation programs.
Supply support for SN75454BPG4 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 50 years of innovation in industrial and automotive electronics.
SN75454BPG4 belongs to the SN7545xB dual-peripheral driver family, engineered for robust TTL-compatible interfacing between low-voltage logic and high-current/high-voltage peripherals in cost-sensitive commercial applications.
FAQ
What logic function does the SN75454BPG4 implement?
The SN75454BPG4 implements a dual NOR gate function (Y = A + B in positive logic). When either input A or B is high, the corresponding open-collector output turns on (pulls low); only when both inputs are low does the output remain high (via external pull-up). This behavior is confirmed in Table 8-4 of the TI datasheet and applies identically to both channels of the SN75454BPG4.
What is the maximum continuous output current rating for SN75454BPG4?
The SN75454BPG4 is characterized for continuous output current up to 300 mA per channel under recommended operating conditions (VCC = 4.75–5.25 V, TA = 0°C to 70°C). This value is specified in Section 1 Features and verified in Electrical Characteristics (Section 6.4), where VOL remains ≤0.7 V at 300 mA for SN7545xB devices.
Does SN75454BPG4 require external pull-up resistors on its outputs?
Yes, SN75454BPG4 requires external pull-up resistors on pins 1Y and 2Y because it features open-collector NPN outputs. The pull-up voltage may exceed VCC (up to 30 V) to interface with higher-voltage loads. Typical values range from 1 kΩ to 10 kΩ depending on load current and rise-time requirements, as confirmed in Figure 9-1 and Section 9.2 of the datasheet.
Can SN75454BPG4 operate with a 3.3-V logic supply?
No, SN75454BPG4 is not specified for 3.3-V operation. Its recommended VCC range is 4.75 V to 5.25 V, and TTL-compatible input thresholds (VIH ≥ 2.0 V, VIL ≤ 0.8 V) assume a 5-V system. Using 3.3 V risks marginal or non-functional input recognition and violates Recommended Operating Conditions in Section 6.2 of the datasheet.
Is SN75454BPG4 pin-compatible with other SN7545xB variants like SN75451B?
Yes, SN75454BPG4 is pin-compatible with all SN7545xB family members (e.g., SN75451B, SN75452B, SN75453B) in the same PDIP-8 package. Pin assignments for 1A, 1B, 1Y, GND, VCC, 2A, 2B, and 2Y are identical across the family, as shown in Figure 5-1 and Table 5-1 - enabling drop-in replacement when logic function matches system requirements.
SN75454BPG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-DIP (0.300", 7.62mm)
- Packaging:
- Tube
- Product Status:
- Discontinued at Digi-Key
- 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
SN75454BPG4 FAQ
1.How can I place an order for SN75454BPG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for SN75454BPG4 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 SN75454BPG4 reliable?
The price and inventory of SN75454BPG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN75454BPG4 is usually 5 days.
3.What payment methods are accepted for SN75454BPG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN75454BPG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SN75454BPG4?
SN75454BPG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN75454BPG4 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 SN75454BPG4?
For technical support, including SN75454BPG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN75454BPG4 requirements.
6.How does Aetrix verify that SN75454BPG4 is sourced from the original manufacturer or authorized distributors?
All SN75454BPG4 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 SN75454BPG4 meets industry standards.
7.What is the process for return or replacement of SN75454BPG4?
All SN75454BPG4 units undergo pre-shipment inspection (PSI). If there is an issue with SN75454BPG4, 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 SN75454BPG4 part is unused and in its original packaging.
Return procedure for SN75454BPG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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