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Allegro MicroSystems A6810SLW-T
- Part No.:
- A6810SLW-T
- Manufacturer:
- Allegro MicroSystems
- Package:
- 20-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
A6810SLW-T.pdf
- Description:
- IC PWR DRVR BIPOLAR 1:10 20SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,594
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Product details
Overview
A6810SLW-T from Allegro MicroSystems is a discontinued 10-bit serial-input latched source driver IC with NPN Darlington output stages, 60 V output breakdown voltage, ±40 mA output current capability, and controlled 4.0–20 V/μs slew rate-designed for vacuum-fluorescent display driving and peripheral power switching in industrial control panels.
For engineers reviewing the A6810SLW-T datasheet, A6810SLW-T pinout, A6810SLW-T application, or A6810SLW-T equivalent, key selection considerations include its SOIC-W-20 package, –20°C to +85°C ambient rating, PNP active pull-down sink capability (≥2.5 mA), and compatibility with 3.3 V/5 V logic interfaces at up to 10 MHz data input rates.
Technical Context
The A6810SLW-T integrates a 10-bit CMOS shift register, parallel latches, and bipolar sourcing outputs with PNP active pull-downs-enabling serial-to-parallel conversion and blanking-controlled output disable. Its architecture supports cascading via CMOS serial data output and direct microprocessor interfacing without level-shifting.
It features controlled output slew rate (4.0–20 V/μs) to suppress EMI in telecom and microprocessor-adjacent systems, and uses low-saturation-voltage Darlington drivers capable of continuous 25 mA per output across its full temperature range. Blanking input disables all source drivers while enabling all sink drivers independently of latch state.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Type | NPN Darlington source drivers with PNP active pull-down sinks |
| Output Voltage Rating | 60 V minimum breakdown-supports high-voltage VF displays and relay coils |
| Output Current | ±40 mA continuous per channel-enables direct drive of medium-power loads |
| Data Input Rate | ≥10 MHz clock frequency-compatible with fast microcontroller SPI-like interfaces |
| Slew Rate | 4.0–20 V/μs-reduces electromagnetic emissions to meet regulatory limits |
| Logic Supply | 3.3 V or 5 V compatible-eliminates need for external level translators |
| Operating Temperature | –20°C to +85°C ambient-suitable for commercial and light industrial environments |
Pinout & Package
Package: 20-pin SOIC-W (LW package), Pb-free, 1000 pieces per 13-inch reel.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1–10 | Output Source Drivers (OUT1–OUT10) | NPN Darlington outputs capable of sourcing up to 40 mA each |
| 11 | Ground (GND) | Logic ground reference for CMOS circuitry and latch control |
| 12 | Serial Data Input (DATA) | CMOS-compatible input accepting 3.3 V/5 V serial bitstream on rising clock edge |
| 13 | Strobe (STROBE) | Latch enable-transfers shift register contents to output latches when high |
| 14 | Blanking (BLANKING) | Active-high control disabling all source drivers and enabling all sink drivers |
| 15 | Clock (CLOCK) | CMOS input synchronizing serial data shift on rising edge |
| 16 | Serial Data Output (SERIAL DATA OUT) | CMOS-level output enabling daisy-chaining of multiple A6810 devices |
| 17 | VBB (Driver Supply) | 60 V high-side supply for output drivers-decoupled from logic supply |
| 18 | VDD (Logic Supply) | 3.3 V or 5 V supply for internal CMOS logic, shift register, and latches |
| 19 | NC | No connect-internally unused pin |
| 20 | NC | No connect-internally unused pin |
Key Features
| Feature | Design Value |
|---|---|
| Controlled output slew rate | 4.0–20 V/μs-meets FCC/CE radiated emission requirements in mixed-signal systems |
| High-speed serial interface | 10 MHz clock support-enables real-time display updates in fast UI applications | PNP active pull-downs | ≥2.5 mA sink capability per output-provides reliable inter-digit blanking and load discharge |
| Low-output saturation voltage | <1.5 V at 25 mA-minimizes power loss and thermal stress during continuous drive |
| CMOS logic compatibility | 3.3 V/5 V dual-supply operation-simplifies integration with modern MCU I/O banks |
| Thermal robustness | RθJA = 90°C/W (SOIC-W)-supports 25 mA continuous output current over full temp range |
Applications
| Vacuum-Fluorescent Display Driver | Industrial Panel Indicator System |
|---|---|
|
Use Scenario: Driving multi-segment VF displays in HVAC control panels and test equipment front-ends. IC Role / Device Role / Timing Role: Serial-input latched source driver providing high-voltage segment anode control with synchronized blanking. Use Value: 60 V output rating and controlled slew rate ensure clean segment transitions and compliance with EN 55032 Class B emissions limits. |
Use Scenario: Controlling LED status indicators and relay coils in programmable logic controller (PLC) I/O modules. IC Role / Device Role / Timing Role: Peripheral power driver translating microcontroller GPIO signals into isolated, current-boosted outputs. Use Value: PNP active pull-downs enable safe inter-digit blanking and rapid load discharge-critical for flicker-free indicator sequencing. |
| Telecom Equipment Status Interface | Legacy Instrumentation Signal Conditioning |
|
Use Scenario: Managing status LEDs and optocoupler drivers in base station line cards where EMI sensitivity is high. IC Role / Device Role / Timing Role: EMI-optimized source driver with slew-controlled edges reducing coupling into adjacent RF sections. Use Value: 4.0–20 V/μs slew rate directly lowers broadband noise generation-reducing need for external filtering components. |
Use Scenario: Replacing obsolete UCN5810x drivers in legacy benchtop instruments requiring 10-bit parallel output expansion. IC Role / Device Role / Timing Role: Drop-in functional upgrade offering higher data rate (10 MHz vs. 5 MHz) and improved latch timing margins. Use Value: 100 ns strobe setup time and 0.7–3.0 μs strobe-to-output delay enable deterministic timing in synchronous instrument firmware. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 10-bit serial-input latched source driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| A6810ELWTR-T | Wider temperature range (–40°C to +85°C) and same SOIC-W-20 package; identical electrical specs | Required for extended-temperature industrial deployments where A6810SLW-T's –20°C lower limit is insufficient | Select A6810ELWTR-T when operating below –20°C ambient or when long-term supply continuity is prioritized over cost |
| A6812SLWTR-T | 20-bit version with identical architecture, slew control, and SOIC-W-20 package; double the channel count | Used where expanded I/O density is needed without increasing board area or changing footprint | Choose A6812SLWTR-T when scaling from 10 to 20 outputs while retaining layout compatibility and timing behavior |
Compared with A6810SLW-T, the A6810ELWTR-T extends operational reliability to colder environments, while the A6812SLWTR-T doubles channel count without altering PCB layout or system timing-both retain the same EMI-suppressing slew rate and 60 V output capability.
Availability
A6810SLW-T is available at Aetrix Electronics and suitable for vacuum-fluorescent display systems, industrial HMI panels, and telecom status interface circuits requiring stable component supply despite end-of-life status.
Supply support for A6810SLW-T 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
Allegro MicroSystems is a U.S.-based designer of high-performance magnetic sensing and power IC solutions, headquartered in Worcester, Massachusetts.
The A6810 product line delivers high-voltage, high-current serial-input driver ICs optimized for vacuum-fluorescent and LED display systems, industrial control interfaces, and legacy equipment upgrades.
FAQ
Is the A6810SLW-T still in production?
No, the A6810SLW-T is a discontinued product classified as LAST TIME BUY with order deadline October 29, 2010. It is no longer manufactured, and samples are unavailable. Aetrix Electronics maintains limited legacy stock for existing design continuity but does not recommend it for new designs.
What is the maximum clock frequency supported by the A6810SLW-T?
The A6810SLW-T guarantees operation at ≥10 MHz clock frequency under standard conditions. While higher speeds may be achievable, they are not warranted-especially at elevated temperatures where timing margins shrink due to increased propagation delays.
Can the A6810SLW-T drive vacuum-fluorescent displays directly?
Yes, the A6810SLW-T is specifically designed for VF display driving: its 60 V output breakdown voltage, 40 mA sourcing capability per channel, and controlled slew rate match VF anode requirements. It supports inter-digit blanking via the BLANKING input to eliminate crosstalk.
What is the purpose of the PNP active pull-downs in the A6810SLW-T?
The PNP active pull-downs in the A6810SLW-T provide ≥2.5 mA sink current per output, enabling rapid discharge of capacitive loads and precise inter-digit blanking. Unlike passive resistors, they actively pull down during blanking-ensuring zero current through VF segments and eliminating ghosting.
Does the A6810SLW-T require external decoupling capacitors?
Yes, the A6810SLW-T requires separate decoupling: a 0.1 µF ceramic capacitor between VDD and GND near the device, and a ≥10 µF bulk capacitor between VBB and GND. This prevents logic supply droop and suppresses high-current transients from affecting CMOS circuitry.
A6810SLW-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Allegro MicroSystems
- Package/Case:
- 20-SOIC (0.295", 7.50mm Width)
- Series:
- -
- Packaging:
- Tube
- Product Status:
- Obsolete
- Switch Type:
- Latched Driver
- Number of Outputs:
- 10
- Ratio - Input:Output:
- 1:10
- Output Configuration:
- High Side
- Output Type:
- Bipolar
- Interface:
- Strobe, Serial
- Voltage - Load:
- 60V (Max)
- Voltage - Supply (Vcc/Vdd):
- 3V ~ 5.5V
- Current - Output (Max):
- 40mA
- Rds On (Typ):
- -
- Input Type:
- Non-Inverting
- Features:
- -
- Fault Protection:
- -
- Operating Temperature:
- -20°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-SOIC
A6810SLW-T FAQ
1.How can I place an order for A6810SLW-T through Aetrix?
Please submit a Request for Quotation (RFQ) for A6810SLW-T 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 A6810SLW-T reliable?
The price and inventory of A6810SLW-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for A6810SLW-T is usually 5 days.
3.What payment methods are accepted for A6810SLW-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for A6810SLW-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for A6810SLW-T?
A6810SLW-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your A6810SLW-T 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 A6810SLW-T?
For technical support, including A6810SLW-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your A6810SLW-T requirements.
6.How does Aetrix verify that A6810SLW-T is sourced from the original manufacturer or authorized distributors?
All A6810SLW-T 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 A6810SLW-T meets industry standards.
7.What is the process for return or replacement of A6810SLW-T?
All A6810SLW-T units undergo pre-shipment inspection (PSI). If there is an issue with A6810SLW-T, 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 A6810SLW-T part is unused and in its original packaging.
Return procedure for A6810SLW-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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