My Inquiry
My Account
NXP Semiconductors PCA9698DGG/S911,51
- Part No.:
- PCA9698DGG/S911,51
- Manufacturer:
- NXP Semiconductors
- Category:
- I/O Expanders
- Package:
- 56-TFSOP (0.240", 6.10mm Width)
- Datasheet:
-
PCA9698DGG/S911,51.pdf
- Description:
- IC XPNDR 1MHZ I2C 56TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,645
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
The PCA9698DGG/S911,51 from NXP Semiconductors is a 40-bit I²C-bus advanced GPIO expander with Fast-mode Plus (1 MHz) support, organized in five 8-bit banks. It provides configurable totem-pole or open-drain outputs (10 mA source / 25 mA sink), active-low RESET and OE pins, and an interrupt-capable INT/SMBALERT output. It drives up to 40 LEDs directly at 5 V and operates from 2.3 V to 5.5 V across −40 °C to +85 °C - used in industrial PLCs and server board management.
For engineers reviewing the PCA9698DGG/S911,51 datasheet, PCA9698DGG/S911,51 pinout, PCA9698DGG/S911,51 application, or PCA9698DGG/S911,51 equivalent, key selection criteria include I²C bus speed (1 MHz Fm+), 40-bit programmable I/O direction per bank, output structure configuration (totem-pole vs. open-drain), interrupt masking per input pin, and SMBus Alert compatibility for multi-device alert coordination.
Technical Context
The PCA9698DGG/S911,51 implements a fully register-mapped I²C slave interface with Auto-Increment capability across five 8-bit banks (IP/OP/PI/IOC/MSK), enabling sequential read/write of port data, polarity inversion, and interrupt mask control. Its Command Register (default 0x80) decodes 28 valid register addresses using 6-bit pointers plus AI flag.
It integrates dedicated hardware blocks: a low-pass input filter (50 ns noise rejection), SMBus Alert Response logic tied to a fixed 0x1C address, GPIO All Call support at 0xDC, and Device ID read access via reserved 0xF8 address. Output enable (OE) is active-low by default but programmable to active-high via MODE register bit OEPOL.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| I²C Bus Speed | Up to 1 MHz Fast-mode Plus - enables high-throughput I/O configuration on dense, capacitance-heavy buses (up to 4000 pF). |
| Supply Voltage Range | 2.3 V to 5.5 V with 5.5 V tolerant I/Os - supports mixed-voltage system interfacing without level shifters. |
| Output Drive Strength | Totem-pole: 10 mA source / 25 mA sink; open-drain: 25 mA sink - allows direct LED driving or logic-level translation. |
| Interrupt Logic | Active-low INT/SMBALERT pin asserts on unmasked input state change - reduces polling overhead in host firmware. |
| Address Flexibility | 64 slave addresses via AD2–AD0 pins; plus dedicated GPIO All Call (0xDC) and SMBus Alert (0x1C) addresses - simplifies multi-device initialization and fault reporting. |
| Reset Behavior | Active-low RESET initializes all 40 I/Os as inputs with IOC registers set to 0xFF - ensures safe power-up state in embedded systems. |
| ESD Robustness | 2000 V HBM, 200 V MM, 1000 V CDM - meets industrial reliability requirements for live-insertion and handling. |
Pinout & Package
The PCA9698DGG/S911,51 uses a 56-pin TSSOP package (SOT364-1), 6.1 mm body width, with exposed thermal pad not present - requires standard PCB land pattern per NXP SOT364-1 footprint.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| SDA | Serial Data Line | Open-drain bidirectional I²C data line; requires external pull-up; supports 1 MHz Fm+ timing. |
| SCL | Serial Clock Line | Input-only I²C clock; synchronizes all register reads/writes and auto-increment operations. |
| IO0_0–IO4_7 | Configurable I/O Port Pins | 40 total pins grouped in five 8-bit banks; each individually programmable as input/output with polarity inversion and interrupt masking. |
| RESET | Hardware Reset Input | Active-low asynchronous reset - forces all I/Os to input mode and reloads default register values (IOC=0xFF, OP=0x00, etc.). |
| OE | Output Enable Input | Active-low 3-state control for all output pins; polarity invertible via MODE register OEPOL bit for PWM dimming integration. |
| INT/SMBALERT | Shared Interrupt/Alert Output | Open-drain active-low signal asserted on unmasked input change or SMBus Alert Response - supports wired-AND multi-device alert bus. |
| AD0–AD2 | Slave Address Inputs | Three binary inputs selecting one of 64 I²C addresses (0x20–0x3F); no internal pull-ups - external biasing required. |
| VDD / VSS | Power Supply Pins | VDD (2.3–5.5 V) powers core and I/O; six VSS pins provide low-inductance ground return paths for noise-sensitive operation. |
Key Features
| Feature | Design Value |
|---|---|
| Fm+ I²C Interface | 1 MHz operation with robust state machine and 50 ns input filtering - sustains reliable communication on long, noisy, high-capacitance PCB traces. |
| Bank-Structured Register Map | Five independent 8-bit banks (0–4) with mirrored IP/OP/PI/IOC/MSK registers - enables modular I/O grouping for subsystem isolation (e.g., sensor bank vs. LED bank). |
| Programmable Output Architecture | Per-bank selection of totem-pole or open-drain outputs via OUTCONF register - supports both push-pull logic control and wired-OR interrupt signaling. |
| GPIO All Call Command | Single I²C write to address 0xDC configures identical settings across multiple PCA9698 devices - eliminates sequential addressing in multi-GPIO systems. |
| Device ID Readout | Hard-coded 24-bit ID (manufacturer + part + revision) accessible at reserved address 0xF8 - enables runtime device validation and firmware version matching. |
| SMBus Alert Support | Responds to Alert Response Address 0x1C with its own slave address - allows centralized fault polling without scanning all device addresses. |
Applications
| Server Board Management | Industrial PLC I/O Expansion |
|---|---|
|
Use Scenario: Monitoring chassis fans, temperature sensors, and power supply status in 1U/2U rack servers. IC Role / Device Role / Timing Role: Acts as centralized I²C-accessible GPIO hub, reading sensor inputs and controlling status LEDs and relay drivers. Use Value: Reduces host CPU I/O pin count while supporting hot-swap detection and real-time fault alerts via INT/SMBALERT. |
Use Scenario: Adding digital input/output capability to compact programmable logic controllers for factory automation. IC Role / Device Role / Timing Role: Provides 40 isolated, interrupt-capable I/O points with noise-filtered inputs and 25 mA sink outputs for solenoid/valve control. Use Value: Enables deterministic response to field events (e.g., limit switch closure) without host polling, improving scan cycle efficiency. |
| Medical Equipment Panel Control | RAID System Status Indication |
|
Use Scenario: Driving front-panel LEDs, reading membrane keypad inputs, and managing alarm indicators in diagnostic imaging devices. IC Role / Device Role / Timing Role: Serves as human-interface GPIO controller with OE-enabled PWM dimming and masked interrupt inputs for tactile feedback. Use Value: Supports Class II medical safety requirements via galvanic isolation on I²C bus and low standby current (<10 µA typical). |
Use Scenario: Controlling drive activity LEDs, fault indicators, and enclosure status lights across multi-bay RAID storage enclosures. IC Role / Device Role / Timing Role: Manages synchronized LED patterns (blink/dim) using OE pin modulation and bank-wise output updates via ACK/STOP timing control. Use Value: Eliminates need for discrete LED drivers; 40-bit parallel control allows simultaneous status update across all bays with single I²C transaction. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar I/O expansion applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| PCA9698BS,518 | HVQFN56 package (8 × 8 mm, 0.85 mm height) with exposed thermal pad; identical electrical specs and register map. | Better thermal performance in space-constrained, high-density layouts; requires soldering of center pad for full spec compliance. | Select PCA9698BS,518 when board layout demands lower profile or enhanced thermal dissipation; pin-compatible but different land pattern. |
| PCA9555DWR | 16-bit I/O, 400 kHz Fast-mode only, no SMBALERT, no GPIO All Call, no OE pin, no output structure selection. | Limited to simpler peripheral expansion where interrupt coalescing, multi-device sync, or LED-driving strength are unnecessary. | Choose PCA9555DWR only for cost-sensitive, low-pin-count designs lacking advanced timing or coordination features required by PCA9698DGG/S911,51. |
Compared with PCA9698BS,518, the PCA9698DGG/S911,51 offers identical functionality in TSSOP56 for easier rework and legacy footprint compatibility; versus PCA9555DWR, it delivers 2.5× more I/O, 2.5× higher bus speed, and critical system-level features like SMBus Alert and GPIO All Call essential for scalable embedded control.
Availability
The PCA9698DGG/S911,51 is available at Aetrix Electronics and suitable for industrial PLCs, server board management, RAID enclosure control, and medical panel interfaces requiring stable component supply and long-term manufacturability.
Supply support for PCA9698DGG/S911,51 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 leader specializing in secure connectivity solutions for automotive, industrial, and IoT applications, with deep expertise in I²C, SMBus, and advanced GPIO architectures.
The PCA9698DGG/S911,51 belongs to NXP's Fast-mode Plus GPIO family, designed specifically for high-reliability, high-density I²C bus expansion in industrial control, datacenter infrastructure, and medical equipment where deterministic interrupt response and multi-device coordination are critical.
FAQ
What is the maximum I²C bus speed supported by the PCA9698DGG/S911,51?
The PCA9698DGG/S911,51 supports Fast-mode Plus (Fm+) I²C operation up to 1 MHz, exceeding standard Fast-mode (400 kHz) and enabling faster configuration of its 40-bit I/O ports in time-critical systems. This speed is validated across the full −40 °C to +85 °C temperature range and supports bus capacitance up to 4000 pF, making it suitable for densely routed backplanes and multi-drop configurations where signal integrity is challenged.
How does the PCA9698DGG/S911,51 handle power-up and reset conditions?
On power-up or assertion of the active-low RESET pin, the PCA9698DGG/S911,51 initializes all 40 I/Os as inputs (IOC registers = 0xFF), sets output registers (OP0–OP4) to 0x00, enables interrupt masking (MSK0–MSK4 = 0xFF), and configures outputs as totem-pole (OUTCONF = 0xFF). This safe default state prevents unintended output activation and ensures predictable behavior during system boot or recovery sequences.
Can the PCA9698DGG/S911,51 drive LEDs directly, and what are the current limits?
Yes, the PCA9698DGG/S911,51 can drive up to 40 LEDs directly at 5 V supply: each totem-pole output sources 10 mA or sinks 25 mA, with total package sink capability of 1 A. When configured as open-drain, it sinks 25 mA per pin. The active-low OE pin supports PWM dimming above 80 Hz, and output structure is programmable per bank via the OUTCONF register - enabling mixed-mode LED and logic control on a single device.
What is the function of the INT/SMBALERT pin on the PCA9698DGG/S911,51?
The INT/SMBALERT pin on the PCA9698DGG/S911,51 is a dual-function open-drain output: it asserts active-low when any unmasked input pin changes state (INT mode), or responds to an SMBus Alert command by transmitting its slave address (SMBALERT mode). The mode is selected via the MODE register SMBA bit, and multiple devices can share this pin in a wired-AND configuration for centralized fault polling without address scanning.
How many I²C addresses can be assigned to the PCA9698DGG/S911,51, and how are they selected?
The PCA9698DGG/S911,51 supports 64 unique I²C slave addresses (0x20–0x3F) selected via three hardware address pins (AD2, AD1, AD0). These pins have no internal pull-ups and must be externally biased to VDD or VSS. In addition, it responds to three fixed-function addresses: GPIO All Call (0xDC) for broadcast writes, SMBus Alert Response (0x1C) for fault reporting, and Device ID read (0xF8) - all independent of ADx pin settings.
PCA9698DGG/S911,51 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- -
- Package/Case:
- 56-TFSOP (0.240", 6.10mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Number of I/O:
- 40
- Interface:
- I2C
- Interrupt Output:
- Yes
- Features:
- POR
- Output Type:
- Open Drain
- Current - Output Source/Sink:
- 10mA, 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:
- 56-TSSOP
PCA9698DGG/S911,51 FAQ
1.How can I place an order for PCA9698DGG/S911,51 through Aetrix?
Please submit a Request for Quotation (RFQ) for PCA9698DGG/S911,51 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 PCA9698DGG/S911,51 reliable?
The price and inventory of PCA9698DGG/S911,51 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PCA9698DGG/S911,51 is usually 5 days.
3.What payment methods are accepted for PCA9698DGG/S911,51?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PCA9698DGG/S911,51 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PCA9698DGG/S911,51?
PCA9698DGG/S911,51 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PCA9698DGG/S911,51 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 PCA9698DGG/S911,51?
For technical support, including PCA9698DGG/S911,51 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PCA9698DGG/S911,51 requirements.
6.How does Aetrix verify that PCA9698DGG/S911,51 is sourced from the original manufacturer or authorized distributors?
All PCA9698DGG/S911,51 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 PCA9698DGG/S911,51 meets industry standards.
7.What is the process for return or replacement of PCA9698DGG/S911,51?
All PCA9698DGG/S911,51 units undergo pre-shipment inspection (PSI). If there is an issue with PCA9698DGG/S911,51, 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 PCA9698DGG/S911,51 part is unused and in its original packaging.
Return procedure for PCA9698DGG/S911,51:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
PCA9698DGG/S911,51 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…
