Diodes Incorporated PI74STX1G02CX

Overview

PI74STX1G02CX from Pericom Semiconductor is a 2-input NOR gate logic IC operating across 1.65V–5.5V supply, delivering 5.0ns typical propagation delay into 15pF at 5V, ±24mA output drive at 3V, and high-impedance power-down capability. It serves as a level-shifted, low-power combinational logic element in voltage-flexible digital control paths of portable interface circuits and mixed-voltage I/O subsystems.

For engineers reviewing the PI74STX1G02CX datasheet, PI74STX1G02CX pinout, PI74STX1G02CX application, or PI74STX1G02CX equivalent, key selection criteria include VDD range compatibility (1.65–5.5V), guaranteed 5.0ns tPD at 5V/15pF, ±24mA drive strength at 3V, input leakage <±1µA, and SOT23-5 (T5) package footprint constraints.

Technical Context

This device implements standard TTL-compatible NOR logic with dual independent inputs (AIN, BIN) and single active-low output (YOUT), supporting rail-to-rail input voltage operation up to VDD. Its submicron CMOS process enables fast switching while maintaining low static current (ICC ≤20µA) and high noise immunity across temperature (–40°C to +85°C).

The gate features power-down high-impedance I/O states when VDD = 0V, enabling hot-swap and bus-isolation use cases. Input thresholds scale with VDD (VIH = 0.70×VDD min, VIL = 0.30×VDD max), ensuring robust logic interpretation across 1.8V, 2.5V, 3.3V, and 5V domains without external level shifters.

Key Specifications

Pinout & Package

Package: SOT23-5 (T5), 5-pin plastic surface-mount package with 0.95mm pitch, 2.10mm × 1.25mm body, and 1.00mm height per JEDEC MO-178AB.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 2-input NOR gate applications.

Compared with SN74LVC1G02DBVR and NC7SZ02P5X, PI74STX1G02CX uniquely guarantees 5.0ns tPD down to 1.65V and supports full 1.65–5.5V operation with consistent ±24mA drive-making it optimal for multi-rail portable and industrial systems requiring timing predictability across voltage scaling.

Availability

PI74STX1G02CX is available at Aetrix Electronics and suitable for USB peripheral control, industrial sensor interface logic, portable display sequencing, and automotive body control modules requiring stable component supply across extended temperature and multi-voltage environments.

Supply support for PI74STX1G02CX 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

Pericom Semiconductor was a fabless provider of high-speed interface, timing, and logic solutions, acquired by Diodes Incorporated in 2016; its legacy logic portfolio remains widely deployed in industrial and communications infrastructure.

The PI74STX series delivers ultra-small-footprint, wide-VDD logic gates optimized for voltage-flexible I/O bridging and power-aware digital subsystems in portable, automotive, and industrial equipment.

FAQ

Can PI74STX1G02CX operate reliably at 1.65V supply?

Yes. The datasheet specifies guaranteed operation-including 5.0ns tPD, VIH ≥1.16V, and VOL ≤0.28V @ 24mA-at VDD = 1.65V across –40°C to +85°C. This makes it suitable for battery-powered systems where supply voltage drops near end-of-life.

What is the maximum capacitive load this NOR gate can drive?

The device is characterized up to 50pF load (tPD = 2.5ns typ @ 3.3V), but sustained operation beyond 50pF may degrade timing and increase power dissipation. For loads >50pF, add a series resistor or buffer stage to maintain signal integrity and avoid overshoot.

Does PI74STX1G02CX require external pull-up or pull-down resistors on unused inputs?

Yes. The datasheet explicitly states unused inputs must be held HIGH or LOW-never left floating-to prevent increased ICC, oscillation, or undefined output states. A 10kΩ pull-up to VDD or pull-down to GND satisfies this requirement.

Is the SOT23-5 package (T5) RoHS-compliant and lead-free?

Yes. The ordering code "PI74STX1G02CX" includes the "E" suffix per Pericom's coding convention, indicating Pb-free and green (halogen-free) construction per RoHS Directive 2011/65/EU and JEDEC J-STD-020 moisture sensitivity level 1.