My Inquiry
My Account
Texas Instruments SN75437ANEE4
- Part No.:
- SN75437ANEE4
- Manufacturer:
- Texas Instruments
- Package:
- 16-DIP (0.300", 7.62mm)
- Datasheet:
-
SN75437ANEE4.pdf
- Description:
- QUADRUPLE PERIPHERAL DRIVERS 16-
- Quantity:
- Payment:
- Shipping:
Inventory:3,386
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SN75437ANEE4 from Texas Instruments is a quadruple inverting open-collector peripheral driver IC with high-voltage (70 V min), high-current (0.5 A rated) outputs, common-enable control (G), and integrated output-clamp diodes for inductive load transient suppression. It operates from 4.75–5.25 V, delivers <0.25 V low-level output voltage at 250 mA, and targets relay, solenoid, lamp, and small DC motor drive applications in industrial control systems.
For engineers reviewing the SN75437ANEE4 datasheet, SN75437ANEE4 pinout, SN75437ANEE4 application, or SN75437ANEE4 equivalent, key selection criteria include its 16-pin PDIP-NE package, 70 V off-state output voltage rating, 0.5 A continuous output current per channel, input compatibility with CMOS/TTL logic levels, and absence of power-up/down output glitches.
Technical Context
The SN75437ANEE4 implements four independent NAND-gated inverting drivers, each with an open-collector output and shared active-low enable (G). Its internal structure includes input clamp diodes (–1.5 V max VIK), output clamp diodes (70 V reverse breakdown), and saturating bipolar transistor outputs with low on-resistance (VOL ≤ 0.25 V @ 250 mA).
It is designed for inductive switching applications-supporting VS up to 35 V in such circuits-and features latch-up immunity within 0°C to 70°C operation. Standby power is limited to 21 mW max, and propagation delays range from 150 ns (tPHL) to 5 µs (tPLH), making it suitable for moderate-speed digital interface buffering rather than high-frequency signal routing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output type | Four open-collector, inverting drivers with common-enable (G) |
| Max output voltage (off state) | 70 V - supports direct switching of inductive loads up to 35 V supply with clamp protection |
| Continuous output current | 0.5 A per channel - sufficient for driving 12 V relays (≈40 mA coil) or small solenoids (≤500 mA hold) |
| Supply voltage range | 4.75 V to 5.25 V - compatible with standard 5 V TTL/CMOS logic rails |
| Input compatibility | CMOS and TTL logic levels - VIH ≥ 2 V, VIL ≤ 0.8 V ensures robust interfacing with microcontrollers and logic families |
| Propagation delay (tPHL) | 150 ns typical - enables reliable timing in control sequences up to ~1 MHz toggle rate |
| Standby power dissipation | 21 mW max - minimizes quiescent heating in always-on industrial I/O modules |
Pinout & Package
Packaged in 16-pin plastic dual-in-line package (PDIP-NE), thermally enhanced with heat sink pads connected to GND pins (pins 7 and 8). The NE package conforms to JEDEC MS-001, measures 0.914–0.930 inches in length, and uses NIPDAU lead finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1A, 2A, 3A, 4A | Input (NAND A) | Individual channel inputs; high = output low (open-collector pull-down active) |
| G | Common enable (active low) | Drives all four outputs high-impedance when high; enables inversion only when low |
| 1Y, 2Y, 3Y, 4Y | Open-collector output | Each sinks current to external load; requires external pull-up to VS (up to 70 V) |
| 1,2 D / 3,4 D | Internal clamp diode cathodes | Connected to outputs; provide flyback path for inductive loads (e.g., relay coils) |
| VCC | Logic supply | 5 V logic rail only; not used for load power - separate VS required for outputs |
| GND (pins 7, 8) | Ground reference & heat sink | Dual GND pins improve thermal conduction and reduce ground bounce in multi-channel switching |
Key Features
| Feature | Design Value |
|---|---|
| No power-up/down glitch | Ensures safe default high-impedance state during system reset or brownout - prevents unintended actuator activation |
| Integrated output clamp diodes | Eliminates need for external flyback diodes when driving relays/solenoids - reduces BOM count and PCB area |
| High-impedance inputs | IIH ≤ 10 µA and IIL ≥ –10 µA - minimizes loading on driving logic, enabling fan-out >20 from 5 V MCU GPIO |
| Latch-up immunity | Guaranteed no latch-up under recommended operating conditions - critical for reliability in noisy industrial environments |
| Thermally enhanced PDIP | NE package with heat sink pads on GND pins improves thermal resistance by ≈15% vs standard PDIP - supports sustained 0.5 A/channel operation |
Applications
| Industrial Relay Control | DC Solenoid Actuation |
|---|---|
|
Use Scenario: Controlling 24 V AC/DC electromechanical relays in PLC I/O modules. IC Role / Device Role / Timing Role: Level-shifting and current-sinking driver that interfaces 5 V microcontroller outputs to 24 V relay coils with built-in flyback protection. Use Value: Eliminates four external diodes and simplifies layout; 70 V off-state rating exceeds 24 V relay back-EMF spikes by >2× margin. |
Use Scenario: Driving 12 V DC holding solenoids in vending machine dispensers and valve actuators. IC Role / Device Role / Timing Role: High-current switch enabling precise on/off timing via MCU GPIO with common-enable sequencing. Use Value: 0.5 A per channel sustains solenoid hold current without derating; tPHL = 150 ns ensures sub-millisecond response for fast-cycle operations. |
| LED Array Signaling | Printer Hammer Driver |
|
Use Scenario: Multiplexed high-brightness LED displays in industrial HMI panels requiring 35 V string voltage. IC Role / Device Role / Timing Role: Low-side segment driver sinking current from LED strings powered by 35 V supply (VS). Use Value: Output clamp diodes suppress transients from rapid LED switching; 70 V VO(off) prevents breakdown during open-circuit fault detection. |
Use Scenario: Impact hammer control in dot-matrix printers where mechanical inertia demands high peak current pulses. IC Role / Device Role / Timing Role: Fast-switching current sink delivering 500 mA pulses synchronized to print head motion. Use Value: VOL ≤ 0.25 V at 250 mA minimizes power loss in hammer coil; no power-up glitch avoids accidental hammer strike at boot. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-voltage peripheral driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ULN2803A | 8-channel vs 4-channel; identical 500 mA rating, 50 V output rating (lower than SN75437ANEE4's 70 V) | Higher channel density but lower off-state voltage margin - less suitable for 35 V inductive circuits | Prefer ULN2803A when board space is constrained and 50 V rating suffices; verify VS ≤ 30 V in design |
| TPIC6B595 | 8-bit shift-register output driver; serial interface vs parallel inputs; 500 mA rating, 65 V output rating | Requires SPI control and timing coordination; better for daisy-chained I/O expansion than direct GPIO drive | Choose TPIC6B595 when adding multiple drivers via minimal MCU pins; avoid if real-time parallel control is required |
Compared with ULN2803A and TPIC6B595, the SN75437ANEE4 offers the highest off-state voltage rating (70 V), simplest parallel control architecture (no serial protocol), and dedicated common-enable for synchronized channel disable - making it optimal for safety-critical, single-board relay/solenoid interfaces.
Availability
SN75437ANEE4 is available at Aetrix Electronics and suitable for industrial control systems, automated test equipment, and electro-mechanical actuation subsystems requiring stable component supply, long-lifecycle support, and RoHS-compliant through-hole assembly.
Supply support for SN75437ANEE4 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 founded in 1930, specializing in analog, embedded processing, and logic solutions with broad industrial, automotive, and communications reach.
The SN75437ANEE4 belongs to TI's legacy peripheral driver product line, engineered specifically for robust, low-complexity interfacing between 5 V logic and high-voltage/high-current electro-mechanical loads in factory automation and instrumentation.
FAQ
What is the maximum supply voltage the SN75437ANEE4 can tolerate on its output terminals?
The SN75437ANEE4 specifies a minimum off-state output voltage rating of 70 V, verified per absolute maximum ratings. This means each open-collector output (1Y–4Y) can safely withstand up to 70 V when in the high-impedance (off) state - critical for suppressing flyback transients from 35 V inductive loads. Exceeding this voltage risks breakdown of the internal clamp diodes or output transistor.
Does the SN75437ANEE4 require external flyback diodes when driving relays?
No - the SN75437ANEE4 integrates internal clamp diodes (connected to pins 1,2D and 3,4D) specifically for transient suppression. When a relay coil is connected between VS and an output (e.g., 1Y), the internal diode provides a path for inductive kickback current. External diodes are unnecessary unless VS exceeds 35 V or extreme reliability margins demand redundancy.
Can the SN75437ANEE4 be used with a 3.3 V microcontroller?
Yes, but only if the microcontroller's 3.3 V outputs meet the SN75437ANEE4's input threshold requirements: VIH ≥ 2 V (satisfied) and VIL ≤ 0.8 V (also satisfied). However, note that the SN75437ANEE4's VCC must still be 5 V - it does not accept 3.3 V logic supply. The 3.3 V MCU outputs directly interface to 1A–4A and G without level shifting.
What is the thermal performance limit of the SN75437ANEE4 in continuous operation?
The SN75437ANEE4 has a maximum continuous power dissipation of 2075 mW at 25°C free-air temperature, derating linearly to 1328 mW at 70°C. With its thermally enhanced NE package and dual GND pins, it supports simultaneous 0.5 A output per channel at 25°C ambient - provided PCB copper area and airflow meet minimum thermal design guidelines in TI's MPDI003 mechanical data sheet.
Is the SN75437ANEE4 pin-compatible with earlier SN75437 versions?
Yes - the SN75437ANEE4 uses the same NE (16-pin PDIP) package and identical pinout as SN75437ANE and SN75437ANE.A. All share identical logic function, electrical specifications, and mechanical dimensions. The "E4" suffix denotes tape-and-reel packaging per TI's internal ordering convention, not a functional revision.
SN75437ANEE4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 16-DIP (0.300", 7.62mm)
- Packaging:
- Tube
- Product Status:
- Active
- Logic Type:
- Peripheral Driver
- Number of Elements:
- 1
- Number of Bits per Element:
- 4
- Input Type:
- -
- Output Type:
- Open Collector
- Current - Output High, Low:
- 100µA, 500mA
- Voltage - Supply:
- 4.75V ~ 5.25V
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 16-PDIP
SN75437ANEE4 FAQ
1.How can I place an order for SN75437ANEE4 through Aetrix?
Please submit a Request for Quotation (RFQ) for SN75437ANEE4 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 SN75437ANEE4 reliable?
The price and inventory of SN75437ANEE4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN75437ANEE4 is usually 5 days.
3.What payment methods are accepted for SN75437ANEE4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN75437ANEE4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SN75437ANEE4?
SN75437ANEE4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN75437ANEE4 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 SN75437ANEE4?
For technical support, including SN75437ANEE4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN75437ANEE4 requirements.
6.How does Aetrix verify that SN75437ANEE4 is sourced from the original manufacturer or authorized distributors?
All SN75437ANEE4 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 SN75437ANEE4 meets industry standards.
7.What is the process for return or replacement of SN75437ANEE4?
All SN75437ANEE4 units undergo pre-shipment inspection (PSI). If there is an issue with SN75437ANEE4, 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 SN75437ANEE4 part is unused and in its original packaging.
Return procedure for SN75437ANEE4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SN75437ANEE4 Tags
-
SN74LVC1G17DBVR
Texas Instruments
-
SN74LVC1G07DCKR
Texas Instruments
-
SN74LVC1G17DCKR
Texas Instruments
-
SN74LVC1G07DBVR
Texas Instruments
-
SN74LVC1G125DCKR
Texas Instruments
-
SN74AHCT1G126DBVR
Texas Instruments
-
SN74LVC1G125DBVR
Texas Instruments
-
SN74AHCT1G125DBVR
Texas Instruments
-
SN74LVC2G17DBVR
Texas Instruments
-
SN74LVC2G07DCKR
Texas Instruments
-
SN74LVC1G34DCKR
Texas Instruments
-
SN74LVC2G17DCKR
Texas Instruments
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
