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Texas Instruments SN75452BP
- Part No.:
- SN75452BP
- Manufacturer:
- Texas Instruments
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
SN75452BP.pdf
- Description:
- IC PERIPHERAL DRIVER 5.25V 8DIP
- Quantity:
- Payment:
- Shipping:
Inventory:474
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Product details
Overview
SN75452BP from Texas Instruments is a dual-NAND peripheral driver IC designed for high-current, high-speed switching in TTL-compatible logic systems. It delivers 300mA output current per channel, supports up to 30V off-state output voltage, and operates across 0°C to 70°C. It drives lamps, LEDs, and line loads in industrial control interfaces.
For engineers reviewing the SN75452BP datasheet, SN75452BP pinout, SN75452BP application, or SN75452BP equivalent, this page provides verified functional modes, thermal derating data, latch-up immunity confirmation at 20V/300mA, and direct comparison with SN75451BP/SN75453BP for logic-gate selection.
Technical Context
The SN75452BP implements dual independent NAND-gated npn transistor drivers with diode-clamped TTL inputs and open-collector outputs. Each channel integrates internal base resistors (1kΩ, 4kΩ, 1.6kΩ) enabling direct interface with 3.3V/5V logic without external biasing.
It features guaranteed latch-up immunity after conducting 300mA at 20V, operates with VCC = 4.75–5.25V, and achieves 26–35ns propagation delay (tPLH/tPHL) at 5V/25°C with 15pF load - matching SN75450 family timing while eliminating latch-up risk.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Logic Function | Dual NAND gate with internally connected outputs driving npn transistors |
| Max Output Current | 300 mA per channel - sufficient to drive LEDs, relays, and small solenoids directly |
| Output Voltage Rating | 30 V off-state - enables interfacing with 24V industrial buses and lamp loads |
| Propagation Delay | 26 ns (typ) at 5 V - supports high-speed digital buffering up to ~15 MHz |
| Operating Temperature | 0°C to 70°C - qualified for commercial-grade embedded and instrumentation applications |
| Input Compatibility | TTL-compatible with diode-clamped inputs - accepts standard 0.8V/2.0V logic thresholds |
| Supply Voltage | 4.75 V to 5.25 V - tightly regulated 5V rail required; bypass capacitor mandatory |
Pinout & Package
SN75452BP uses an 8-pin PDIP (Plastic Dual In-line Package) with 9.81mm × 6.35mm body size and through-hole mounting.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1A, 2A | Channel 1 & 2 Logic Input A | NAND gate input A; must be tied to VCC or GND if unused to prevent floating |
| 1B, 2B | Channel 1 & 2 Logic Input B | NAND gate input B; floating inputs cause undefined output states |
| 1Y, 2Y | Channel 1 & 2 Open-Collector Output | Sinks current to GND when active; requires external pull-up for logic-high level |
| VCC | Positive Supply | 5V supply pin; requires 0.1 µF ceramic bypass capacitor near pin |
| GND | Ground Reference | Common return path for logic inputs, outputs, and supply decoupling |
Key Features
| Feature | Design Value |
|---|---|
| No latch-up at 20V/300mA | Enables robust operation under transient overloads without destructive failure |
| Diode-clamped TTL inputs | Eliminates need for external clamping diodes; simplifies interface with legacy logic |
| Open-collector outputs | Supports wired-OR logic, level translation, and flexible pull-up voltage selection |
| Internal base resistors | 1kΩ/4kΩ/1.6kΩ network allows direct TTL drive without external bias components |
| High-speed switching | 26–35ns propagation delay enables use in timing-critical peripheral buffering |
Applications
| Industrial Lamp Control | LED Driver Interface |
|---|---|
Use Scenario: Driving 12–24V incandescent or halogen indicator lamps in PLC I/O modules. IC Role / Device Role / Timing Role: Dual-NAND driver acts as logic-controlled current sink, turning lamps on/off based on MCU GPIO signals. Use Value: Eliminates discrete transistor arrays; handles 300mA per lamp without heatsinking at ambient temperatures ≤70°C. | Use Scenario: Driving high-brightness LED strings in panel meters and HMI backlighting. IC Role / Device Role / Timing Role: Provides current-sinking capability synchronized to PWM dimming signals from microcontrollers. Use Value: Supports fast PWM switching (≤35ns delay) and withstands 30V reverse voltage during LED flyback transients. |
| Relay Coil Driver | Legacy Bus Line Driver |
Use Scenario: Activating 5–24V DC electromagnetic relays in industrial automation cabinets. IC Role / Device Role / Timing Role: Sinks relay coil current (typically 20–150mA) with controlled turn-on/turn-off timing. Use Value: Internal base resistors ensure proper saturation; open-collector output isolates MCU from inductive kickback. | Use Scenario: Buffering TTL-level control signals onto long 50Ω transmission lines in test equipment backplanes. IC Role / Device Role / Timing Role: High-speed logic buffer with matched 26ns tPLH/tPHL ensures signal integrity at >10 MHz. Use Value: 15pF load drive capability and low propagation skew maintain timing margins in synchronous bus architectures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-NAND peripheral driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN75451BP | AND logic function instead of NAND; identical pinout, package, and electrical specs | Used where active-HIGH enable logic is required instead of active-LOW | Select SN75451BP when system control signals are asserted high to activate loads |
| SN75453BP | OR logic function; same package, temperature range, and output drive capability | Applicable in OR-gated enable paths (e.g., fault-or-run conditions) | Choose SN75453BP when combining multiple control sources with logical OR behavior |
Compared with SN75451BP and SN75453BP, the SN75452BP provides inverted enable logic essential for active-low reset, shutdown, or disable functions - making it optimal for fail-safe or interlocked peripheral control where default state must be OFF.
Availability
SN75452BP is available at Aetrix Electronics and suitable for industrial lamp control, LED driver interfaces, relay coil driving, and legacy bus line driving requiring stable component supply and long-term obsolescence management.
Supply support for SN75452BP 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 company headquartered in Dallas, Texas, specializing in analog, embedded processing, and logic solutions for industrial, automotive, and communications markets.
The SN7545xB family was designed to replace legacy SN75450-series drivers with enhanced latch-up immunity and consistent high-speed performance - targeting TTL-based peripheral interfacing in cost-sensitive, reliability-critical systems.
FAQ
What logic function does the SN75452BP implement?
The SN75452BP implements a dual-NAND logic function: each channel outputs LOW only when both inputs (1A/1B or 2A/2B) are HIGH. This active-low behavior makes it ideal for enable/disable control of peripherals. The SN75452BP's internal schematic connects NAND gate outputs directly to npn transistor bases, delivering true logic-driven current sinking without external components.
Can SN75452BP drive a 24V lamp directly?
Yes, the SN75452BP supports up to 30V off-state output voltage and 300mA continuous output current per channel, making it suitable for direct 24V lamp driving. Its open-collector outputs require an external pull-up to 24V, and the device remains latch-up-free even after conducting 300mA at 20V - a key reliability feature confirmed in TI's characterization testing for the SN75452BP.
What is the recommended supply voltage for SN75452BP?
The SN75452BP requires a tightly regulated 5V supply between 4.75V and 5.25V, as specified in TI's Recommended Operating Conditions. Operation outside this range risks incorrect logic thresholds or degraded output saturation. A 0.1 µF ceramic capacitor must be placed adjacent to the VCC pin to suppress switching noise - a requirement explicitly validated for the SN75452BP in TI's layout guidelines.
Does SN75452BP require external base resistors?
No, the SN75452BP integrates all necessary base resistors (1kΩ, 4kΩ, and 1.6kΩ) internally, enabling direct connection to TTL-level logic sources without external biasing components. This design eliminates component count and layout complexity - a verified feature of the SN75452BP shown in Figure 8-10 of its official datasheet.
How does SN75452BP differ from SN75450 family devices?
The SN75452BP replaces the obsolete SN75450 family with identical pinout and speed but adds guaranteed freedom from latch-up - a critical reliability enhancement. While SN75450 devices could latch under overload, the SN75452BP is characterized to remain functional after conducting 300mA at 20V, a distinction confirmed in TI's device description and absolute maximum ratings for the SN75452BP.
SN75452BP 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
SN75452BP FAQ
1.How can I place an order for SN75452BP through Aetrix?
Please submit a Request for Quotation (RFQ) for SN75452BP 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 SN75452BP reliable?
The price and inventory of SN75452BP are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN75452BP is usually 5 days.
3.What payment methods are accepted for SN75452BP?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN75452BP transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SN75452BP?
SN75452BP orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN75452BP 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 SN75452BP?
For technical support, including SN75452BP datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN75452BP requirements.
6.How does Aetrix verify that SN75452BP is sourced from the original manufacturer or authorized distributors?
All SN75452BP 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 SN75452BP meets industry standards.
7.What is the process for return or replacement of SN75452BP?
All SN75452BP units undergo pre-shipment inspection (PSI). If there is an issue with SN75452BP, 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 SN75452BP part is unused and in its original packaging.
Return procedure for SN75452BP:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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