My Inquiry
My Account
NXP Semiconductors PCA9674TS,118
- Part No.:
- PCA9674TS,118
- Manufacturer:
- NXP Semiconductors
- Category:
- I/O Expanders
- Package:
- 20-LSSOP (0.173", 4.40mm Width)
- Datasheet:
-
PCA9674TS,118.pdf
- Description:
- IC XPNDR 1MHZ I2C 20SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,338
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
PCA9674TS,118 from NXP Semiconductors is an 8-bit remote I/O expander for Fast-mode Plus (Fm+) I²C-bus with interrupt output, operating from 2.3 V to 5.5 V, supporting 1 MHz I²C communication, 25 mA per port sink drive for direct LED control, and active-low open-drain INT pin. It serves as a parallel port extender in embedded systems requiring scalable GPIO expansion without bus buffers.
For engineers reviewing the PCA9674TS,118 datasheet, PCA9674TS,118 pinout, PCA9674TS,118 application, or PCA9674TS,118 equivalent, key selection considerations include its quasi-bidirectional I/O architecture, 64 programmable slave addresses via AD0–AD2, 4.5 µA typical standby current, and compatibility with Fm+ I²C-bus timing and drive strength requirements.
Technical Context
The PCA9674TS,118 implements a quasi-bidirectional I/O structure with no direction register-each of the eight ports (P0–P7) defaults to input at power-up with a 100 µA weak pull-up, and can be driven low via internal NMOS sink transistors. Its I²C interface complies with Fast-mode Plus (1 MHz), featuring 30 mA SDA sink capability to support up to 4000 pF bus capacitance without repeaters.
Interrupt logic monitors input state changes against the input port register and asserts the active-low open-drain INT pin; the device includes Power-On Reset (POR) initialization and software reset via General Call address 00h + data byte 06h. Device ID (manufacturer, part ID, revision) is readable via reserved address F8h.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| I²C Bus Speed | 1 MHz Fast-mode Plus (Fm+) - enables high-throughput GPIO control in time-critical applications like LED dimming. |
| Supply Voltage Range | 2.3 V to 5.5 V - supports single-supply operation across industrial, automotive, and portable systems. |
| I/O Sink Current | 25 mA per port (latched output) - sufficient to directly drive standard LEDs without external drivers. |
| Total Package Sink | 200 mA aggregate - allows simultaneous activation of multiple outputs under thermal limits. |
| Standby Current | 4.5 µA typical (static) - optimized for battery-powered mobile and IoT edge devices. |
| Operating Temperature | −40 °C to +85 °C - qualified for industrial and extended-temperature embedded environments. |
| Slave Addresses | 64 programmable via AD0/AD1/AD2 - enables dense I²C-bus deployment with up to 126 expanders (PCA9674 + PCA9674A). |
Pinout & Package
PCA9674TS,118 is supplied in TSSOP16 package (SOT403-1), 4.4 mm body width, 16-pin surface-mount format with exposed pad for thermal enhancement. Pin mapping is identical to PCA9674PW variant per NXP datasheet Rev. 7.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| AD0–AD2 | Hardware address inputs | Select one of 64 I²C slave addresses; accept VDD/VSS/SCL/SDA logic levels for expanded addressing. |
| P0–P7 | Quasi-bidirectional I/O ports | No direction register needed; each port functions as input (with 100 µA pull-up) or output (25 mA sink) independently. |
| INT | Active-low open-drain interrupt | Asserts when any input state differs from corresponding input register - eliminates polling, reduces MCU overhead. |
| SCL/SDA | I²C serial clock/data | Fm+ compliant; SDA supports 30 mA sink for robust bus driving on high-capacitance lines. |
| VDD/VSS | Power supply terminals | Supports 2.3–5.5 V operation; I/O pins are 5.5 V tolerant when VDD ≤ 5.5 V. |
Key Features
| Feature | Design Value |
|---|---|
| Quasi-bidirectional I/O architecture | Eliminates direction register overhead and simplifies firmware - single-byte read/write controls all 8 ports simultaneously. |
| Fm+ I²C interface (1 MHz) | Enables real-time GPIO updates in LED signage and industrial HMI where latency must be sub-10 µs per transaction. |
| Software Reset via General Call | Restores all registers to POR state using I²C command sequence (00h + 06h), enabling remote recovery without hardware reset line. |
| Readable Device ID | 24-bit hardwired ID (12-bit manufacturer, 9-bit part ID, 3-bit revision) accessible via F8h address - supports automated BOM verification and field firmware validation. |
| ESD & latch-up robustness | 2000 V HBM / 1000 V CDM ESD rating and >100 mA latch-up immunity - ensures reliability in handling-sensitive industrial assembly and end-use environments. |
Applications
| LED Signage & Displays | Industrial PLC I/O Expansion |
|---|---|
Use Scenario: Driving 8-segment alphanumeric displays and multi-color status indicators in outdoor digital signage cabinets. IC Role / Device Role / Timing Role: Remote parallel port expander providing synchronized 8-bit output latching and interrupt-driven status feedback to main controller. Use Value: 25 mA per port enables direct LED drive without discrete transistors; 1 MHz I²C allows rapid brightness updates for PWM dimming sequences. | Use Scenario: Adding isolated digital input/output points to modular PLC backplanes for sensor monitoring and actuator control. IC Role / Device Role / Timing Role: I²C-connected GPIO node with interrupt reporting for edge-triggered alarm conditions (e.g., door open, temperature threshold exceeded). Use Value: Active-low INT pin reduces polling load on PLC CPU; 64 address options allow daisy-chaining up to 16 expanders per bus segment. |
| Medical Equipment Keypads | Server Rack Management |
Use Scenario: Scanning membrane keypads in diagnostic imaging consoles with ESD-hardened interface requirements. IC Role / Device Role / Timing Role: Quasi-bidirectional input expander detecting keypresses and debouncing via host-controlled read cycles. Use Value: 100 µA internal pull-up eliminates external resistors; −40 °C to +85 °C rating ensures stable operation in cooled MRI equipment enclosures. | Use Scenario: Monitoring fan tachometer signals, power supply OK status, and hot-swap controller alerts in 1U/2U server chassis. IC Role / Device Role / Timing Role: Remote I/O hub aggregating asynchronous status inputs and driving fault indicator LEDs via I²C master. Use Value: 4.5 µA standby current minimizes always-on management controller power draw; open-drain INT supports wired-OR interrupt bus topology. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar I/O expansion applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| PCA9674PW,118 | Identical electrical specs and pinout; same TSSOP16 package but standard marking ('9674') vs. 'TS' topmark. | No functional difference; both support full PCA9674 feature set including Fm+, INT, and software reset. | Select PCA9674PW,118 if standard topmarking is required for traceability or legacy BOM alignment. |
| PCA9674D,518 | Same functionality in SO16 package (SOT162-1); larger footprint, through-hole compatible variant with 7.5 mm body width. | Preferred for prototyping, manual assembly, or legacy PCBs designed for SOIC-16 footprints. | Choose PCA9674D,518 when board layout requires SOIC package or thermal mass exceeds TSSOP limits. |
Compared with PCA9674TS,118, PCA9674PW,118 offers identical performance in the same TSSOP16 form factor but with standard topmarking, while PCA9674D,518 provides mechanical compatibility with SOIC-based designs at the cost of higher board area and reduced density.
Availability
PCA9674TS,118 is available at Aetrix Electronics and suitable for LED signage, industrial PLCs, medical keypad interfaces, and server rack management requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for PCA9674TS,118 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
NXP Semiconductors is a global semiconductor company headquartered in Eindhoven, Netherlands, specializing in secure connectivity solutions for automotive, industrial, and IoT applications.
The PCA9674 product line delivers scalable, low-power I²C-based GPIO expansion for resource-constrained embedded systems - designed specifically to simplify hardware design while maintaining robust noise immunity and wide voltage operation.
FAQ
What is the I²C bus speed supported by the PCA9674TS,118?
The PCA9674TS,118 supports Fast-mode Plus (Fm+) I²C operation at up to 1 MHz. This enables high-speed communication with microcontrollers and other I²C masters, making it suitable for time-sensitive applications such as LED PWM dimming and real-time status monitoring. The device meets Fm+ specifications including enhanced drive strength (30 mA SDA sink) and timing compliance.
How does the interrupt output (INT) function on the PCA9674TS,118?
The PCA9674TS,118 features an active-low open-drain interrupt output (INT) that asserts whenever the state of any input port (P0–P7) differs from its corresponding bit in the input port register. This allows the host microcontroller to respond asynchronously to input changes instead of polling, reducing CPU overhead and improving system responsiveness in applications like keypad scanning or alarm monitoring.
Can the PCA9674TS,118 directly drive LEDs, and what is its output current capability?
Yes, the PCA9674TS,118 can directly drive LEDs. Each of its eight quasi-bidirectional I/O ports provides 25 mA sink current capability in output mode, with a total package sink limit of 200 mA. This eliminates the need for external driver transistors in most LED indicator and signage applications, simplifying PCB layout and reducing BOM count.
What are the power supply requirements for the PCA9674TS,118?
The PCA9674TS,118 operates from a single supply voltage ranging from 2.3 V to 5.5 V. Its I/O pins are 5.5 V tolerant when VDD is at or below 5.5 V, and it includes an internal 100 µA weak pull-up on each port at power-up. Typical standby current is only 4.5 µA, making it well-suited for battery-powered and energy-efficient embedded systems.
Does the PCA9674TS,118 support software reset, and how is it executed?
Yes, the PCA9674TS,118 supports software reset via the I²C General Call address. To execute it, the master sends START → 00h (General Call write address) → ACK → 06h (reset command byte) → ACK → STOP. Upon successful sequence, all registers return to their power-on reset values. This enables remote recovery without requiring a hardware reset signal or power cycle.
PCA9674TS,118 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- -
- Package/Case:
- 20-LSSOP (0.173", 4.40mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Number of I/O:
- 8
- Interface:
- I2C
- Interrupt Output:
- Yes
- Features:
- POR
- Output Type:
- Push-Pull
- Current - Output Source/Sink:
- 100µA, 25mA
- Clock Frequency:
- 1 MHz
- Voltage - Supply:
- 2.3V ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-SSOP
PCA9674TS,118 FAQ
1.How can I place an order for PCA9674TS,118 through Aetrix?
Please submit a Request for Quotation (RFQ) for PCA9674TS,118 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 PCA9674TS,118 reliable?
The price and inventory of PCA9674TS,118 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PCA9674TS,118 is usually 5 days.
3.What payment methods are accepted for PCA9674TS,118?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PCA9674TS,118 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PCA9674TS,118?
PCA9674TS,118 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PCA9674TS,118 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 PCA9674TS,118?
For technical support, including PCA9674TS,118 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PCA9674TS,118 requirements.
6.How does Aetrix verify that PCA9674TS,118 is sourced from the original manufacturer or authorized distributors?
All PCA9674TS,118 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 PCA9674TS,118 meets industry standards.
7.What is the process for return or replacement of PCA9674TS,118?
All PCA9674TS,118 units undergo pre-shipment inspection (PSI). If there is an issue with PCA9674TS,118, 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 PCA9674TS,118 part is unused and in its original packaging.
Return procedure for PCA9674TS,118:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
PCA9674TS,118 Tags
-
TCA6408ARSVR
Texas Instruments
-
TCA9535RTWR
Texas Instruments
-
FXL6408UMX
onsemi
-
PCF8574ADWR
Texas Instruments
-
PCF8574APWR
Texas Instruments
-
TCA9555PWR
Texas Instruments
-
TCA9554PWR
Texas Instruments
-
TCA9554APWR
Texas Instruments
-
TCA9539PWR
Texas Instruments
-
TCA9534PWR
Texas Instruments
-
TCA9555RTWR
Texas Instruments
-
TCA9535PWR
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…
