My Inquiry
My Account
NXP Semiconductors PCA9536DP/DG,118
- Part No.:
- PCA9536DP/DG,118
- Manufacturer:
- NXP Semiconductors
- Category:
- I/O Expanders
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
PCA9536DP/DG,118.pdf
- Description:
- IC XPNDR 400KHZ I2C SMBUS 8TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,046
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
The PCA9536DP/DG,118 from NXP Semiconductors is a 4-bit I²C-bus/SMBus GPIO expander in TSSOP8 package, providing configurable parallel input/output expansion for embedded control systems. It operates from 2.3 V to 5.5 V, features 5 V-tolerant I/Os with 100 kΩ internal pull-ups, supports up to 400 kHz I²C clock, and includes polarity inversion and configuration registers for flexible I/O direction control. It is used in ACPI power switches, LED indicators, push-button interfaces, and sensor subsystems.
For engineers reviewing the PCA9536DP/DG,118 datasheet, PCA9536DP/DG,118 pinout, PCA9536DP/DG,118 application, or PCA9536DP/DG,118 equivalent, this page delivers verified register-level functionality, I²C timing compliance (Standard/Fast-mode), thermal and ESD specifications (2000 V HBM), and real-world design-in context for industrial and consumer control boards requiring minimal-footprint I/O extension.
Technical Context
The PCA9536DP/DG,118 implements a fixed-slave-address I²C interface (1000001X) with no auto-increment capability, requiring explicit command-byte addressing for register access. Its four I/O pins (IO0–IO3) are independently configurable as inputs or outputs via Register 3, with default power-on state set to high-impedance inputs with internal 100 kΩ pull-ups to VDD.
All four registers - Input Port (read-only), Output Port (read/write), Polarity Inversion (read/write), and Configuration (read/write) - are accessible over I²C. The device integrates noise filtering on SCL/SDA lines, internal power-on reset (VPOR = 1.7–2.2 V), and glitch-free initialization, ensuring deterministic startup behavior without external reset circuitry.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| I²C Clock Frequency | 0 Hz to 400 kHz - fully compatible with Fast-mode I²C bus timing requirements. |
| Supply Voltage Range | 2.3 V to 5.5 V - enables direct interfacing with 3.3 V and 5 V microcontrollers without level shifters. |
| I/O Voltage Tolerance | 5.5 V max on I/O pins - allows safe connection to 5 V logic even when VDD = 2.3 V. |
| Standby Current | 0.25–1 µA at VDD = 5.5 V, I/O = inputs - supports ultra-low-power sleep modes in battery-operated devices. |
| ESD Protection | 2000 V HBM, 200 V MM, 1000 V CDM - meets industrial handling and board-level robustness requirements. |
| Operating Temperature | −40 °C to +85 °C - qualified for extended industrial ambient conditions. |
| Internal Pull-up | 100 kΩ typical on each I/O - eliminates need for external pull-ups in most input configurations. |
Pinout & Package
TSSOP8 package (SOT505-1): plastic thin shrink small outline, 8 leads, 3 mm body width, 0.65 mm lead pitch, 0.8 mm max height.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - IO0 | Configurable I/O port bit 0 | Bi-directional signal; defaults to input with 100 kΩ pull-up; supports 5 V tolerance. |
| 2 - VDD | Positive supply voltage | Power rail for internal logic and I/O drivers; range 2.3–5.5 V. |
| 3 - IO1 | Configurable I/O port bit 1 | Independent of IO0; same electrical characteristics and configuration flexibility. |
| 4 - SDA | I²C serial data line | Open-drain bidirectional bus line; requires external pull-up resistor. |
| 5 - IO2 | Configurable I/O port bit 2 | Supports polarity inversion and direction control via dedicated registers. |
| 6 - SCL | I²C serial clock line | Input-only clock signal; includes internal noise filter for reliable edge detection. |
| 7 - VSS | Ground reference | Return path for all internal circuits and I/O current; must be low-impedance. |
| 8 - IO3 | Configurable I/O port bit 3 | Final GPIO bit; shares register map and timing specs with IO0–IO2. |
Key Features
| Feature | Design Value |
|---|---|
| Polarity Inversion Register | Per-bit inversion of Input Port register values - simplifies firmware handling of active-low sensors or switches without software XOR. |
| No Glitch on Power-Up | Internal POR holds I/Os in high-Z state until VDD stabilizes - prevents spurious output transitions during power ramp. |
| 5 V-Tolerant I/Os | IO0–IO3 accept up to 5.5 V regardless of VDD setting - enables mixed-voltage system integration without external translators. |
| Low Standby Current | Sub-µA quiescent draw in standby - critical for always-on monitoring nodes in energy-constrained applications. |
| Integrated Noise Filtering | Dedicated input filters on SCL/SDA - suppresses sub-50 ns spikes, improving I²C reliability in electrically noisy environments. |
Applications
| ACPI Power Management | LED Status Indication |
|---|---|
Use Scenario: Monitoring and controlling power states in laptops or embedded systems using ACPI-compliant hardware events. IC Role / Device Role / Timing Role: GPIO expander providing dedicated input lines for lid switch, power button, and thermal trip signals; outputs drive enable lines for PMICs or regulators. Use Value: Reduces host MCU pin count while maintaining precise, low-latency event capture via interrupt-capable I²C reads - no polling overhead required. |
Use Scenario: Driving multi-color status LEDs on industrial HMIs or network equipment front panels. IC Role / Device Role / Timing Role: Output-port-controlled current sink for red/green/blue LED anodes; configured via Output Port register writes. Use Value: Enables dynamic color sequencing and brightness control using only two I²C lines - eliminates need for discrete transistors or LED driver ICs. |
| Push-Button Interface | Sensor Subsystem Enable |
Use Scenario: Debouncing and scanning mechanical buttons in consumer electronics or medical devices. IC Role / Device Role / Timing Role: Four input pins monitor momentary switches; polarity inversion register accommodates both NO and NC configurations without firmware change. Use Value: Internal 100 kΩ pull-ups eliminate external resistors; noise filtering ensures reliable detection even in high-noise enclosures. |
Use Scenario: Enabling/disabling temperature or humidity sensor modules based on system activity or sleep mode. IC Role / Device Role / Timing Role: Output-driven enable signal to sensor power domain; input pin monitors sensor-ready flag or fault condition. Use Value: Provides isolated, software-controllable power gating - reduces system-wide standby current by cutting sensor supply when idle. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar GPIO expander applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| PCA9534DP,118 | 8-bit I/O (vs. 4-bit); identical TSSOP8 package, same VDD range and I²C address scheme. | Supports larger peripheral sets (e.g., 8-channel LED banks or multi-sensor arrays) without increasing I²C traffic overhead per transaction. | Select when future scalability or higher I/O density is required; pin-compatible but requires updated register mapping in firmware. |
| TCA6408APWR | TI part with 8-bit I/O, 1.65–5.5 V operation, and interrupt output; no polarity inversion register. | Lacks polarity inversion - requires software compensation for active-low inputs; adds interrupt pin for event-driven wake-up. | Prefer when low-power interrupt-driven operation is critical and polarity inversion is not needed; different pinout and register layout require PCB and firmware changes. |
Compared with PCA9534DP,118 and TCA6408APWR, the PCA9536DP/DG,118 offers optimal balance of compact 4-bit expansion, built-in polarity inversion, and ultra-low standby current - making it ideal for space- and power-constrained designs where full 8-bit capability is unnecessary.
Availability
The PCA9536DP/DG,118 is available at Aetrix Electronics and suitable for industrial control panels, consumer appliance UIs, and embedded sensor hubs requiring stable component supply across long production lifecycles.
Supply support for PCA9536DP/DG,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 leader focused on secure connectivity solutions for automotive, industrial, and IoT applications, with deep expertise in I²C ecosystem components.
The PCA9536DP/DG,118 belongs to NXP's family of I²C-bus I/O expanders designed specifically to simplify GPIO resource management in space-constrained, low-power embedded systems - extending host controller capabilities without adding complexity or cost.
FAQ
What is the I²C slave address of the PCA9536DP/DG,118?
The PCA9536DP/DG,118 has a fixed 7-bit I²C slave address of 0x20 (1000001X), where the LSB is the R/W bit. This address is hardwired and cannot be changed via pins or registers, allowing only one PCA9536DP/DG,118 per I²C bus segment without address conflict.
Does the PCA9536DP/DG,118 support interrupt output?
No, the PCA9536DP/DG,118 does not include an interrupt output pin. It relies on periodic I²C polling of the Input Port register to detect state changes. For interrupt-driven operation, designers must select alternatives like the PCA9534 or TCA6408A that provide dedicated INT pins.
Can the PCA9536DP/DG,118 drive LEDs directly?
Yes, the PCA9536DP/DG,118 can sink up to 10 mA per I/O pin (at VOL = 0.7 V, VDD = 2.3 V) and source limited current via pull-ups. When configured as outputs, it can directly drive standard LEDs with appropriate series resistors - verified in typical application circuits in the official datasheet.
What happens to the I/O pins during power-on reset?
During power-on reset, all four I/O pins (IO0–IO3) of the PCA9536DP/DG,118 default to high-impedance inputs with internal 100 kΩ pull-up resistors enabled. This prevents floating nodes and ensures predictable startup behavior before firmware configures the Configuration register.
Is the PCA9536DP/DG,118 RoHS compliant and halogen-free?
Yes, the PCA9536DP/DG,118 is RoHS compliant and halogen-free per NXP's product compliance documentation (document ID PCA9536 v.6, Rev. 6 - 7 November 2017). It meets JEDEC J-STD-020 moisture sensitivity level MSL3 and supports lead-free reflow soldering profiles.
PCA9536DP/DG,118 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- -
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Number of I/O:
- 4
- Interface:
- I2C, SMBus
- Interrupt Output:
- No
- Features:
- POR
- Output Type:
- Push-Pull
- Current - Output Source/Sink:
- 10mA, 25mA
- Clock Frequency:
- 400 kHz
- Voltage - Supply:
- 2.3V ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-TSSOP
PCA9536DP/DG,118 FAQ
1.How can I place an order for PCA9536DP/DG,118 through Aetrix?
Please submit a Request for Quotation (RFQ) for PCA9536DP/DG,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 PCA9536DP/DG,118 reliable?
The price and inventory of PCA9536DP/DG,118 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PCA9536DP/DG,118 is usually 5 days.
3.What payment methods are accepted for PCA9536DP/DG,118?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PCA9536DP/DG,118 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PCA9536DP/DG,118?
PCA9536DP/DG,118 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PCA9536DP/DG,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 PCA9536DP/DG,118?
For technical support, including PCA9536DP/DG,118 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PCA9536DP/DG,118 requirements.
6.How does Aetrix verify that PCA9536DP/DG,118 is sourced from the original manufacturer or authorized distributors?
All PCA9536DP/DG,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 PCA9536DP/DG,118 meets industry standards.
7.What is the process for return or replacement of PCA9536DP/DG,118?
All PCA9536DP/DG,118 units undergo pre-shipment inspection (PSI). If there is an issue with PCA9536DP/DG,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 PCA9536DP/DG,118 part is unused and in its original packaging.
Return procedure for PCA9536DP/DG,118:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
PCA9536DP/DG,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…
