PCAL9714HN/Q900 - 14-bit SPI I/O Expander AEC-Q100 | NXP
料号： PCAL9714HN/Q900 ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $0 | $0.00 |
| 10 | $0 | $0.00 |
| 100 | $0 | $0.00 |
| 500 | $0 | $0.00 |
| 1,000 | $0 | $0.00 |
PCAL9714HN/Q900 概述
An I/O expander is a peripheral IC that gives a host microcontroller additional general-purpose input/output pins over a serial bus such as SPI or I2C. In the system hierarchy, an I/O expander sits between the microcontroller (the host) and the end loads - switches, LEDs, sensors, or other digital devices - and belongs to the broader family of interface ICs used for remote I/O expansion in embedded systems.
Key features include the 14 independently configurable GPIO pins, an ultra low-voltage SPI interface that translates directly from cores operating down to 1.1 V, and NXP's Agile I/O feature set, which provides configurable output drive strength, latch-up-free power-up, and programmable pull-up/pull-down behavior. The dedicated interrupt output (INT) signals the host when an input changes state, and the active reset (RESET) pin restores the register map to default conditions without a power cycle.
Technically, the PCAL9714 performs internal level translation between the low-voltage SPI interface side and the wider I/O supply, allowing a 1.1 V to 1.8 V microcontroller to safely drive I/O powered at higher voltages. The SPI clock supports up to 5 MHz, and the HVQFN24 package (4 x 4 x 0.85 mm body, plastic thermal enhanced very thin quad flat, no leads) suits space-constrained automotive and industrial boards.
Typical applications include automotive body control modules and door-zone electronics, keypad and switch matrix scanning, LED and indicator control, and fan or sensor status monitoring in industrial controllers. The AEC-Q100 qualification makes it especially appropriate for automotive tiers where reliability over temperature is mandatory.
Design consideration: keep the SPI traces short and decouple the VDD pins with 100 nF ceramics close to the package; the ultra low-voltage interface tolerates little noise margin, so signal integrity planning matters more than with 3.3 V parts.
This page synthesizes distributor listings, AEC-Q100 qualification details, drop-in family variants, and practical design notes not found in the manufacturer datasheet alone. Pricing shown is as of 2026-10-19 where available.
直接替换替代料： PCAL9714HN/Q900 ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
快速对比工具——选择替代料号进行并排对比：
PCAL9714HN/Q900MP
✅ 直接替换📋 参考替代料（不在目录中）
PCAL9714HN/Q900HP
✅ 直接替换📋 参考替代料（不在目录中）
PCAL9714HN
✅ 直接替换📋 参考替代料（不在目录中）
PCAL9714HN/Q900 规格参数
| 功能 | 14-bit SPI level translating I/O expander |
| Number of I/O | 14 |
| 接口类型 | SPI |
| Maximum SPI Clock Frequency | 5 MHz |
| Minimum Interface Voltage | 1.1 V |
| Special Features | Agile I/O, interrupt output, reset |
| Qualification | AEC-Q100 compliant (Q900 automotive variant) |
| 封装 | HVQFN-24 (4x4 mm) |
| Package Body Dimensions | 4 x 4 x 0.85 mm |
| Package Type Description | Plastic thermal enhanced very thin quad flat package; no leads; 24 terminals |
| 安装类型 | Surface Mount |
| Marking Code | Q714 |
| RoHS 状态 | unknown |
| 生命周期状态 | Active (per NXP product page, Oct 2026) |
PCAL9714HN/Q900 plastic thermal enhanced very thin quad flat package; no leads; 24 terminals 引脚配置指南
PCAL9714HN/Q900（plastic thermal enhanced very thin quad flat package; no leads; 24 terminals 封装）的引脚配置。 引脚编号、功能和连接图在制造商数据手册中定义。请参阅该手册以了解确切的封装尺寸和焊接指南。
暂无详细引脚数据： PCAL9714HN/Q900.
请参阅 数据手册 以查看完整引脚配置。
典型应用
PCAL9714HN/Q900 适用于 6 应用s: Automotive Body Control Modules, Keypad and Switch Matrix Scanning, LED and Status Indicator Control, Industrial Sensor and Fan Status Monitoring, Portable and Battery-Powered Devices, Automotive Door Zone Electronics.
Automotive Body Control Modules
The PCAL9714HN/Q900 is purpose-built for automotive I/O expansion: its AEC-Q100 compliance satisfies OEM qualification requirements that standard commercial expanders cannot meet. In a body control module, the 14 GPIO pins monitor door switches, seat-belt latches, and fluid-level inputs while driving relay and LED indicator outputs, all over a single SPI link to the host MCU. The 1.1 V-capable level-translating interface connects directly to low-voltage automotive MCU cores without external level shifters, and the dedicated interrupt output lets the MCU sleep between events, reducing quiescent current - a critical parameter for always-on automotive modules powered from the battery.
推荐
Keypad and Switch Matrix Scanning
The PCAL9714HN/Q900 fits keypad scanning because several of its 14 I/O can be configured as inputs with internal pull-ups (per the Agile I/O feature set) while others drive scan columns, eliminating discrete pull-up resistors. When any key changes state, the interrupt output (INT) immediately flags the host MCU, which then reads the port over SPI at up to 5 MHz - far faster than polling. The 1.1 V minimum interface voltage allows direct connection to low-voltage portable or automotive HMI microcontrollers. The reset pin provides a known default state after power-up or fault recovery, ensuring no phantom key events are latched during brown-out conditions in automotive or industrial HMI panels.
推荐
LED and Status Indicator Control
Driving panel LEDs, backlights, and status indicators is a natural fit for the PCAL9714HN/Q900's 14 outputs. The Agile I/O feature set allows configuring output drive strength per pin, letting a single expander serve both high-current indicator LEDs and low-current signaling outputs without external buffers on the low-current channels. The level-translating architecture means the I/O supply can differ from the 1.1-1.8 V MCU supply, so LEDs can run on a higher rail. In automotive clusters and industrial panels, the AEC-Q100 qualification of the Q900 variant covers the extended temperature and reliability requirements, while the HVQFN24's 4x4 mm footprint keeps indicator-driver PCB area minimal.
推荐
Industrial Sensor and Fan Status Monitoring
In industrial controllers and network equipment, the PCAL9714HN/Q900 aggregates digital status signals - fan tach/fault outputs, door interlocks, presence sensors, and limit switches - into one SPI-readable register set. The interrupt output enables event-driven monitoring: the host MCU is interrupted only when a monitored input changes, instead of polling every channel, which simplifies firmware and lowers bus traffic. Its 1.1 V interface connects directly to modern low-voltage SoCs and FPGA banks, and the level translation isolates the noisy 24 V-adjacent monitoring domain from the sensitive low-voltage logic domain. The reset pin guarantees a deterministic input configuration after system power-up sequences.
推荐
Portable and Battery-Powered Devices
Battery-powered handhelds and wearables benefit from the PCAL9714HN/Q900's ultra low-voltage SPI interface, which connects directly to 1.1-1.8 V microcontroller cores found in modern low-power SoCs - no level shifters, saving board space and quiescent budget. The 4 x 4 x 0.85 mm HVQFN24 package fits thin portable enclosures, and the interrupt-driven architecture lets the MCU remain in deep sleep between button presses or accessory-attach events, waking only on INT. The 14 GPIO handle buttons, sliders, LED feedback, and peripheral enables in one compact device. The 5 MHz SPI keeps configuration and port reads fast even at low operating voltages, important for responsive user interfaces.
推荐
Automotive Door Zone Electronics
Door modules concentrate switches, mirror controls, window motors, and courtesy LEDs in a single node - exactly the mix the PCAL9714HN/Q900 serves. The AEC-Q100 qualification meets automotive OEM mandates, while the 14 I/O switch between monitoring switch packs and driving LED/lamp feedback outputs. The Agile I/O configurability tailors pull-up and drive settings per channel, and the interrupt output wakes the door-zone MCU (often a low-voltage core) only on user interaction, supporting the low standby current that vehicle battery-drain specifications demand. The HVQFN24's thermal enhanced no-leads construction improves board-level reliability under vibration compared to leaded packages.
推荐
推荐产品汇总
工程参考数据： PCAL9714HN/Q900 ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | PCAL9714HN/Q900MP | PCAL9714HN/Q900HP | PCAL9714HN |
|---|---|---|---|---|
| Package | HVQFN-24 (4x4 mm) | HVQFN-24 (4x4 mm) - same | HVQFN-24 (4x4 mm) - same | HVQFN-24 (4x4 mm) - same |
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors |
| Number of I/O | 14 | 14 | 14 | 14 |
| Interface | SPI, 5 MHz max | SPI, 5 MHz max | SPI, 5 MHz max | SPI, 5 MHz max |
| Minimum Interface Voltage | 1.1 V | 1.1 V | 1.1 V | 1.1 V |
| AEC-Q100 Qualification | Yes (Q900 automotive) | Yes (same qualification, MP flow) | Yes (higher reliability flow) | No (standard grade) |
| Agile I/O Features | Yes | Yes | Yes | Yes |
| Interrupt and Reset | Yes / Yes | Yes / Yes | Yes / Yes | Yes / Yes |
| Quality / Reliability Flow | Q900 standard automotive flow | Mass production (MP) flow | High performance (HP) reliability flow | Standard commercial/industrial flow |
关键差异点
- AEC-Q100 automotive qualification （对比 PCAL9714HN)
- Highest reliability flow option in same footprint （对比 PCAL9714HN/Q900HP)
- 1.1 V level-translating SPI interface （对比 PCAL9714HN (family baseline))
设计说明
The PCAL9714's SPI interface can operate down to 1.1 V, which leaves very little noise margin. Keep SCK, MOSI, CS, and MISO traces as short as practical (ideally under 10 cm), route them over a continuous ground plane, and place 22-33 ohm series resistors near the driver if trace stubs or connectors exist on the bus. At the full 5 MHz SPI clock, verify edge rates and overshoot on the low-voltage side with an oscilloscope; ringing that is harmless at 3.3 V can violate the 1.1 V logic thresholds.
The HVQFN24 is a no-leads package with a center thermal pad; solder this pad to a ground pour with an array of thermal vias to achieve reliable solder joints and low inductance ground return. Use 100 nF ceramic decoupling capacitors within 2 mm of each supply pin, plus a 4.7-10 uF bulk capacitor nearby. Ensure the stencil design follows NXP HVQFN application recommendations (per NXP packaging application notes) with roughly 50-60% pad coverage to avoid voiding under the exposed pad.
Do not float unused I/O pins: configure unused channels as outputs driving low, or enable internal pull-ups on unused inputs via the Agile I/O pull-enable registers, to prevent indeterminate logic and excess current. Assert RESET at power-up (or rely on the documented power-up reset) before first SPI access so the register map is in its default state - reading ports before reset completion can return stale data. Also confirm whether your variant is the /Q900 (automotive), /Q900MP, or /Q900HP grade before release, since procurement may substitute grades if qualification requirements are not documented on the BOM.
合规信息
AEC-Q100 compliance is explicitly stated on NXP's product page and Mouser listing for the PCAL9714HN/Q900 family in HVQFN24 package. RoHS/REACH/lead-free status not stated in the provided data - confirm on the NXP product page before release.
