Diodes Incorporated PI74STX1G08CEX

Overview

PI74STX1G08CEX from Pericom Semiconductor is a single 2-input AND gate operating across 1.65V–5.5V V_CC, delivering 2.4ns typical propagation delay into 50pF at 5V, ±24mA output drive at 3V, and high-impedance power-down capability. It is used in level-shifting logic interfaces, enable control for power domains, and signal gating in portable battery-powered microcontroller peripherals.

For engineers reviewing the PI74STX1G08CEX datasheet, PI74STX1G08CEX pinout, PI74STX1G08CEX application, or PI74STX1G08CEX equivalent, key selection criteria include supply voltage flexibility (1.65–5.5V), low-voltage logic compatibility, SOT23/SC70 package footprint constraints, and guaranteed high-impedance state during power-down.

Technical Context

This device implements standard positive-logic AND functionality with Schmitt-trigger input hysteresis absent-inputs respond to TTL- and CMOS-compatible thresholds. Its internal structure supports rail-to-rail input operation and push-pull CMOS output stage, enabling direct interfacing between mixed-voltage domains without external biasing.

Designed for low-power portable systems, it features active power-down mode where all inputs and outputs enter high-impedance state when V_CC = 0V, eliminating leakage paths. The SC70-5 package (code C) provides thermal resistance of 200°C/W and supports reflow soldering per JEDEC MO-203B/AA.

Key Specifications

Pinout & Package

Package: 5-pin SC70 (JEDEC MO-203B/AA), Pb-free & Green compliant, top marking "B8".

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 2-input AND gate applications.

Compared with SN74LVC1G08DBVR and NC7SZ08P5X, PI74STX1G08CEX uniquely delivers 2.4ns propagation delay at 5V and guaranteed high-Z during V_CC loss - critical for battery-backed systems requiring zero-leakage sleep states and high-speed control path timing.

Availability

PI74STX1G08CEX is available at Aetrix Electronics and suitable for USB power management, microcontroller GPIO expansion, low-power sensor interface, and industrial I/O module enable applications requiring stable component supply across extended production cycles.

Supply support for PI74STX1G08CEX 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 in active production and support.

The PI74STX series targets space-constrained, low-voltage portable electronics, emphasizing ultra-small footprint (SOT23/SC70), wide supply range, and power-aware features like high-Z shutdown.

FAQ

What is the maximum recommended operating temperature for PI74STX1G08CEX?

The device is specified for operation from –40°C to +85°C ambient temperature. Junction temperature must remain ≤125°C under actual PCB thermal conditions; derating applies above 70°C ambient depending on power dissipation and board copper area. Thermal resistance θ_JA for SC70-5 is 200°C/W per Pericom's packaging documentation.

Can unused inputs be left floating?

No. Unused inputs must be externally tied HIGH or LOW via resistors (e.g., 10kΩ pull-up/down) to prevent metastability, increased ICC, or oscillation. Floating inputs violate Recommended Operating Conditions and may cause erratic output behavior or excessive current draw due to undefined input threshold crossing.

Does PI74STX1G08CEX support 1.8V logic levels?

Yes. With V_CC = 1.8V, the device meets all AC/DC specifications: VIH(min) = 1.2V, VIL(max) = 0.6V, and VOH(min) = 1.62V - fully compatible with 1.8V LVTTL and LVCMOS logic families. Propagation delay increases to ~5.2ns at 1.8V, 30pF load.

Is there a pin-compatible 2-input OR gate in the same family?

Yes. PI74STX1G32CEX is the OR-gate counterpart in the same SOTiny™ STX family, sharing identical SC70-5 package, 1.65–5.5V V_CC range, 2.4ns t_PD @ 5V, ±24mA drive, and power-down high-Z behavior - enabling drop-in functional substitution where logic polarity differs.