My Inquiry
My Account
Texas Instruments SN65HVS881PWP
- Part No.:
- SN65HVS881PWP
- Manufacturer:
- Texas Instruments
- Category:
- Serializers, Deserializers
- Package:
- 28-PowerTSSOP (0.173", 4.40mm Width)
- Datasheet:
-
SN65HVS881PWP.pdf
- Description:
- IC SERIALIZER 1MBPS 28HTSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:205
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SN65HVS881PWP from Texas Instruments is an industrial 8-channel digital-input serializer with integrated diagnostics, SPI-compatible interface, 34-V field input tolerance, selectable 0–3 ms debounce, and regulated 5-V output for external isolators - used in high-density PLC digital input modules.
For engineers reviewing the SN65HVS881PWP datasheet, SN65HVS881PWP pinout, SN65HVS881PWP application, or SN65HVS881PWP equivalent, key selection criteria include field-side voltage range (10–34 V), input current limit adjustability via RLIM, IEC61131-2 Type 1/2/3 compliance support, thermal shutdown at 150°C, and cascading capability for >8-channel systems.
Technical Context
The SN65HVS881PWP implements a parallel-in/serial-out shift register architecture with configurable debounce filtering per channel, parity generation across 8 inputs plus 3 diagnostic bits (HOT, UVO, PAR), and on-chip linear regulation delivering up to 50 mA at 5 V from 10–34 V VCC.
It integrates field-side current limiting (0.2–5.2 mA via RLIM), hysteresis-based input thresholding (VTH−(IN) = 6–8.4 V, VTH+(IN) = 9.4–10 V), overtemperature detection (150°C active-low HOT signal), and undervoltage monitoring - all operating across −40°C to 125°C ambient.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Channels | 8 independent field inputs (IP0–IP7) with individual return paths (RE0–RE7) |
| Field Voltage Range | 10 V to 34 V - supports standard 24-V industrial supply rails with 30% headroom |
| Input Current Limit | Adjustable 0.2–5.2 mA via external RLIM resistor - sets power dissipation and sensor compatibility |
| Debounce Time | Selectable 0 ms / 1 ms / 3 ms via DB0/DB1 pins - eliminates mechanical contact bounce without firmware overhead |
| 5-V Regulator Output | 5.0 V ±5%, 50 mA continuous - powers external digital isolators (e.g., ISO72xx) with minimal external components |
| Diagnostic Outputs | HOT (active-low overtemperature), UVO (undervoltage), PAR (odd parity) - enables real-time system health monitoring |
| ESD Protection | ±15-kV HBM on IPx/VCC pins - meets industrial I/O robustness requirements without external TVS |
| Operating Temperature | −40°C to 125°C junction - qualified for extended industrial environments including control cabinets near motors |
Pinout & Package
SN65HVS881PWP is housed in a 28-pin HTSSOP (PWP) PowerPAD™ package with exposed thermal pad for enhanced heat dissipation in high-power industrial applications.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IP0–IP7 | Field input channels | High-voltage current-sink inputs accepting 0–34 V; each paired with REx for LED drive or return path |
| RE0–RE7 | LED return / sink outputs | Constant-current (2.8–3.5 mA) outputs for status LEDs; tied to GND to enable sinking |
| RLIM | Current limit reference | Connects external precision resistor (17–500 kΩ) to set input current limit per channel |
| VCC | Field supply input | Primary 10–34 V power rail for field-side circuitry and internal regulator input |
| 5VOP | Regulated 5-V output | Stable 5-V supply for external isolators; requires 1 µF + 0.1 µF local decoupling |
| HOT | Overtemperature flag | Active-low open-drain output asserting at 150°C; internal 100-kΩ pull-down ensures fail-safe logic low |
| SOP/SIP | Serial data out/in | SPI-compatible serial interface; SOP drives controller MISO, SIP accepts MOSI for daisy-chain cascading |
| LD/CLK/CE | Shift register controls | LD latches parallel inputs; CLK shifts data on rising edge; CE gates clock propagation |
| DB0/DB1 | Debounce select | Logic inputs selecting 0/1/3 ms filter time; open/GND configuration defines timing without resistors |
| GND | Field ground reference | Dedicated ground pin for field-side return; isolated from logic ground in typical system layout |
Key Features
| Feature | Design Value |
|---|---|
| Cascadable 8-channel architecture | Enables scalable digital input modules (e.g., 32-channel using four SN65HVS881PWP) via single SPI port - reduces isolator count and controller GPIO usage |
| IEC61131-2 Type 1/2/3 compliance support | Configurable input thresholds and hysteresis (VTH−(IN) = 6–8.4 V, VTH+(IN) = 9.4–10 V) meet switching requirements for proximity sensors without external conditioning |
| Integrated diagnostics with parity | Real-time HOT (overtemp), UVO (undervoltage), and PAR (odd parity across 11-bit status word) provide fault visibility without host polling overhead |
| Thermally robust PowerPAD™ package | 28-pin HTSSOP with exposed die pad achieves θJB = 15°C/W - sustains full 34-V operation at 125°C ambient with proper PCB copper area |
| Flexible LED status indication | Eight constant-current REx outputs (2.8–3.5 mA) drive indicator LEDs directly - eliminates external current-limiting resistors per channel |
| High-voltage field-side protection | ±15-kV HBM ESD rating on IPx/VCC pins and 15-V absolute max input withstand reduce need for external protection components |
Applications
| PLC Digital Input Module | Decentralized I/O Node |
|---|---|
Use Scenario: Compact 8-channel DIN-rail mounted digital input module interfacing 24-V sensors to a central PLC controller via isolated SPI. IC Role / Device Role / Timing Role: SN65HVS881PWP acts as field-side serializer, converting parallel 24-V sensor states into a serial diagnostic-rich stream for galvanic isolation. Use Value: Reduces isolator count by 75% vs discrete channel solutions and enables hot-swap diagnostics via parity and HOT flag - improving system uptime. |
Use Scenario: Remote I/O node in factory automation collecting signals from proximity switches, limit switches, and safety curtains across multiple machines. IC Role / Device Role / Timing Role: SN65HVS881PWP serves as ruggedized front-end conditioner and serializer, handling 34-V transients and providing debounced, parity-protected data to a local microcontroller. Use Value: Eliminates external debounce circuitry and supports IEC61131-2 Type 2 (parallel input) mode - enabling dual-sensor redundancy per channel. |
| Motion Control Safety Interface | Industrial PC Digital Input Card |
Use Scenario: Safety-rated motion controller monitoring emergency stop buttons, door interlocks, and light curtains with real-time fault reporting. IC Role / Device Role / Timing Role: SN65HVS881PWP provides fail-safe input sampling with overtemperature shutdown (150°C) and undervoltage lockout - preventing erroneous state capture during brownouts. Use Value: Integrated HOT and UVO flags allow immediate controller response to thermal runaway or supply collapse - meeting SIL-2 functional safety prerequisites. |
Use Scenario: PCIe or USB-based industrial PC add-on card aggregating 32+ digital inputs from machine tools, packaging lines, and test fixtures. IC Role / Device Role / Timing Role: SN65HVS881PWP operates as high-density input serializer in cascaded configuration, feeding diagnostic-rich serial streams to FPGA or ARM host via SPI bridge. Use Value: Enables 32-channel density in single-slot form factor with per-channel LED status (RE0–RE7) - simplifying operator troubleshooting without software tools. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar industrial digital-input serializer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN65HVS882PWP | Same pinout and function but includes integrated 5-V LDO for logic-side supply - adds second regulator output (VIO) for MCU core voltage | Used where isolated logic-side power is unavailable; eliminates need for external 5-V regulator for controller interface | Choose SN65HVS882PWP when powering both isolator and microcontroller from field supply; SN65HVS881PWP suffices when logic-side 5-V is already available |
| AD7403BRIZ | Isolated sigma-delta modulator (not serializer); 16-bit resolution, 20-MHz output, requires external digital filter; no debounce or diagnostics | Targeted at high-precision analog sensing (e.g., current monitoring), not discrete digital input aggregation | AD7403BRIZ is not a functional alternative for digital input serialization - only consider if migrating from digital to isolated analog acquisition |
Compared with SN65HVS882PWP, SN65HVS881PWP offers lower BOM cost and simpler power design when logic-side 5-V is present; versus AD7403BRIZ, it delivers deterministic digital state capture with built-in diagnostics - making it purpose-built for industrial discrete I/O rather than precision measurement.
Availability
SN65HVS881PWP is available at Aetrix Electronics and suitable for industrial automation, PLC digital input modules, and decentralized I/O nodes requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for SN65HVS881PWP 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 connectivity technologies for industrial, automotive, and communications markets.
The SN65HVS881PWP belongs to TI's high-voltage industrial interface portfolio, designed specifically for robust digital input conditioning in harsh factory-floor environments with emphasis on reliability, diagnostics, and system-level EMC resilience.
FAQ
What is the maximum field input voltage supported by the SN65HVS881PWP?
The SN65HVS881PWP supports a field input voltage range of 10 V to 34 V on VCC and IPx pins, with absolute maximum rating of 36 V. This allows reliable operation with standard 24-V industrial supplies while accommodating transient surges up to 34 V without external clamping - confirmed in the Absolute Maximum Ratings table of the SLAS642 datasheet.
How does the SN65HVS881PWP implement input debouncing, and can it be disabled?
The SN65HVS881PWP implements hardware-based debounce via internal RC filters controlled by DB0 and DB1 pins. Setting DB0 = GND and DB1 = open configures 1 ms delay; DB0 = open and DB1 = open selects 3 ms; DB0 = GND and DB1 = GND bypasses filtering (0 ms). This is fully documented in Table 1 and Figure 13 of the datasheet - no firmware or external components required.
Does the SN65HVS881PWP provide diagnostic feedback, and what signals are included?
Yes, the SN65HVS881PWP provides three dedicated diagnostic signals: HOT (active-low overtemperature flag at 150°C), UVO (undervoltage indication when VCC drops below 15–16.05 V), and PAR (odd parity bit covering all 8 inputs plus HOT/UVO). These are serialized alongside input data and appear in Bit 11–Bit 9 of the 11-bit status word - verified in Figure 16 and Section 8.3.7 of SLAS642.
Can multiple SN65HVS881PWP devices be connected together, and how is this achieved?
Yes, SN65HVS881PWP devices support daisy-chain cascading: connect SOP of one device to SIP of the next, while sharing LD, CLK, and CE lines. This enables expansion to 16, 24, or 32 channels using a single SPI interface - detailed in Figure 22 and Section 7.3.3 of the datasheet. No additional logic or level-shifting is needed between devices.
What is the purpose of the RLIM pin on the SN65HVS881PWP, and how is it configured?
The RLIM pin on the SN65HVS881PWP connects to an external precision resistor that sets the per-channel input current limit from 0.2 mA to 5.2 mA via IIP-LIM = 90 × (5 V / RLIM). For example, RLIM = 25 kΩ yields 3.6 mA - matching IEC61131-2 Type 1/3 thresholds. Configuration equations and tolerance impact are provided in Section 9.2.1.2 and Figure 13 of SLAS642.
SN65HVS881PWP Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 28-PowerTSSOP (0.173", 4.40mm Width)
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Function:
- Serializer
- Data Rate:
- 1Mbps
- Input Type:
- Parallel
- Output Type:
- Serial
- Number of Inputs:
- 8
- Number of Outputs:
- 1
- Voltage - Supply:
- 10V ~ 34V
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 28-HTSSOP
SN65HVS881PWP FAQ
1.How can I place an order for SN65HVS881PWP through Aetrix?
Please submit a Request for Quotation (RFQ) for SN65HVS881PWP 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 SN65HVS881PWP reliable?
The price and inventory of SN65HVS881PWP are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN65HVS881PWP is usually 5 days.
3.What payment methods are accepted for SN65HVS881PWP?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN65HVS881PWP transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SN65HVS881PWP?
SN65HVS881PWP orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN65HVS881PWP 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 SN65HVS881PWP?
For technical support, including SN65HVS881PWP datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN65HVS881PWP requirements.
6.How does Aetrix verify that SN65HVS881PWP is sourced from the original manufacturer or authorized distributors?
All SN65HVS881PWP 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 SN65HVS881PWP meets industry standards.
7.What is the process for return or replacement of SN65HVS881PWP?
All SN65HVS881PWP units undergo pre-shipment inspection (PSI). If there is an issue with SN65HVS881PWP, 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 SN65HVS881PWP part is unused and in its original packaging.
Return procedure for SN65HVS881PWP:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SN65HVS881PWP Tags
-
SN65HVS880PWPR
Texas Instruments
-
SN65HVS882PWPR
Texas Instruments
-
FIN3386MTDX
onsemi
-
FIN3385MTDX
onsemi
-
SN65LV1023ARHBR
Texas Instruments
-
SN65LV1023ADBR
Texas Instruments
-
SN65LV1224BDBR
Texas Instruments
-
SN65LVDS93ADGGR
Texas Instruments
-
SN65LVDS93DGGR
Texas Instruments
-
TDES954RGZT
Texas Instruments
-
SN65LV1224BRHBT
Texas Instruments
-
DS90UB914QSQE/NOPB
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…
