Diodes Incorporated PI74ST1G08TEX

Overview

PI74ST1G08TEX from Pericom Semiconductor is a single 2-input AND gate logic IC operating from 1.8V to 3.6V V_CC, delivering 1.8ns typical propagation delay (t_PD), ±24mA output drive at 3V, and high-impedance power-down capability. It serves as a level-shifting combinational logic element in low-voltage digital signal routing, such as I²C bus buffering and microcontroller GPIO expansion.

For engineers reviewing the PI74ST1G08TEX datasheet, PI74ST1G08TEX pinout, PI74ST1G08TEX application, or PI74ST1G08TEX equivalent, key selection criteria include its 5-pin SOT23 (T) package, 1.8–3.6V supply range, sub-2ns propagation delay, input hysteresis-free TTL/CMOS-compatible thresholds, and guaranteed operation across –40°C to +85°C industrial temperature range.

Technical Context

The PI74ST1G08TEX implements standard positive-logic AND functionality with fully buffered inputs and outputs. Its internal architecture supports rail-to-rail input voltage tolerance up to 5.5V independent of V_CC, enabling mixed-voltage interface bridging between 1.8V, 2.5V, and 3.3V domains without external level shifters.

It features active power-down mode with high-impedance I/Os when V_CC = 0V, and meets JEDEC JESD78 Class II latch-up immunity. Input leakage remains ≤±1μA over full temperature range, and dynamic power dissipation capacitance (C_PD) is 20pF at 3.3V.

Key Specifications

Pinout & Package

PI74ST1G08TEX is packaged in a Pb-free, RoHS-compliant 5-pin SOT23 (Package Code T, JEDEC MO-178AA), with 0.95mm pitch, 2.10mm × 1.25mm footprint, and 1.10mm max height. Thermal resistance θ_JA is 220°C/W.

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, PI74ST1G08TEX uniquely combines 1.8V operation, sub-2ns delay, and industrial temperature qualification in a compact SOT23-5 package-making it optimal for space-constrained, low-voltage, real-time embedded logic.

Availability

PI74ST1G08TEX is available at Aetrix Electronics and suitable for industrial PLC I/O expansion, wearable sensor hubs, USB-C power delivery subsystems, and automotive body control modules requiring stable component supply across multi-year production cycles.

Supply support for PI74ST1G08TEX 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 signal integrity solutions, acquired by Diodes Incorporated in 2016; its logic portfolio continues under Diodes' precision timing and interface product lines.

The PI74ST1G08TEX belongs to the SOTiny™ family of ultra-small logic gates designed specifically for space-constrained, low-voltage portable and industrial electronics where speed, power efficiency, and mixed-voltage interoperability are critical.

FAQ

Can PI74ST1G08TEX operate with V_CC = 1.8V while accepting 5V inputs?

Yes. The device guarantees 0–5.5V input voltage tolerance independent of V_CC, so 5V signals applied to AIN or BIN are safe at 1.8V supply. Internal clamp diodes and process design prevent damage or logic corruption, enabling direct interfacing with legacy 5V peripherals without external protection.

What is the maximum capacitive load this AND gate can drive reliably?

At V_CC = 3.3V, PI74ST1G08TEX maintains <4.4ns propagation delay with 15pF load (CL), and its ±24mA output drive supports heavier loads like 50Ω transmission lines or multiple LVC inputs. For loads exceeding 30pF, add series termination or reduce trace length to avoid ringing and timing skew.

Does PI74ST1G08TEX require pull-up or pull-down resistors on unused inputs?

Yes. Unused inputs must be externally tied HIGH or LOW; floating inputs are prohibited per datasheet Note 1. This prevents increased ICC, erratic output behavior, and potential shoot-through current. A 10kΩ pull-up to V_CC is recommended for unused inputs in 3.3V systems.

Is the PI74ST1G08TEX pinout compatible with other SOT23-5 logic gates?

No. While physically identical in SOT23-5 outline, PI74ST1G08TEX uses Pin 1=AIN, Pin 2=BIN, Pin 3=GND, Pin 4=YOUT, Pin 5=V_CC. This differs from industry-standard 74LVC1G08 (Pin 1=A, Pin 2=GND, Pin 3=Y, Pin 4=V_CC, Pin 5=B), making it non-drop-in replaceable without PCB redesign.