Diodes Incorporated PI74ST1G08CEX

Overview

PI74ST1G08CEX from Pericom Semiconductor is a single 2-input AND gate logic IC operating across 1.8V–3.6V supply, delivering 1.8ns typical propagation delay (tPD), ±24mA output drive at 3V, and high-impedance power-down capability. It is used in level-shifting, signal gating, and enable control circuits in portable and low-voltage embedded systems.

For engineers reviewing the PI74ST1G08CEX datasheet, PI74ST1G08CEX pinout, PI74ST1G08CEX application, or PI74ST1G08CEX equivalent, key selection criteria include VCC range compatibility, output drive strength under load, input leakage (<±1µA), power-down state behavior, and SC70 package thermal limits (150mW).

Technical Context

This device implements standard TTL-compatible AND logic with Schmitt-trigger–free inputs and CMOS-compatible outputs. Its dual-rail operation supports mixed-voltage interfacing between 1.8V, 2.5V, and 3.3V domains without external level shifters.

Propagation delay is specified under two load conditions: 15pF/1MΩ (tPLH/tPHL ≤ 4.4ns max) and 50pF/500Ω (≤ 4.2ns max), confirming robust timing performance in capacitive bus environments and high-speed control paths.

Key Specifications

Pinout & Package

PI74ST1G08CEX is housed in a Pb-free, RoHS-compliant 5-pin SC70 package (Package Code C), measuring 2.00mm × 1.25mm × 0.95mm (max height), with 0.65mm pitch and JEDEC MO-203B/AA compliance.

Key Features

Applications

Equivalent & Alternatives

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

Compared with PI74ST1G08CEX, SN74LVC1G08DCKR trades speed for wider voltage flexibility and NC7SZ08P5X omits power-down to reduce cost-both require revalidation of timing margins and sleep-mode signal integrity in battery-constrained designs.

Availability

PI74ST1G08CEX is available at Aetrix Electronics and suitable for portable power sequencing, low-voltage sensor interface, and industrial I/O expansion requiring stable component supply across extended temperature and mixed-voltage environments.

Supply support for PI74ST1G08CEX 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 (acquired by Diodes Incorporated in 2016) specialized in high-speed interface, timing, and logic solutions for communications and computing infrastructure.

The PI74ST1G08 belongs to the SOTiny™ family of ultra-small logic gates, designed specifically for space-constrained, low-power portable and battery-operated applications demanding minimal footprint and fast switching.

FAQ

What is the maximum capacitive load this device can drive while maintaining specified tPD?

PI74ST1G08CEX maintains guaranteed tPD ≤ 4.2ns with 50pF load and 500Ω termination, per AC Electrical Characteristics. Driving >50pF increases delay nonlinearly and may exceed timing budgets; external buffering is recommended beyond this limit.

Does the power-down mode affect input voltage tolerance?

No. Input voltage tolerance remains –0.5V to +6V in all states, including power-down. However, inputs must still be held HIGH or LOW - floating is prohibited even during power-down to avoid undefined output states and increased ICC.

Can PI74ST1G08CEX interface directly with 5V logic outputs?

Yes - inputs tolerate up to +6V DC, so 5V logic outputs may be safely connected. However, outputs swing only to VCC (max 3.6V), so level translation is required for driving true 5V CMOS loads.

Is thermal derating required for continuous operation at 85°C ambient?

Yes. With 150mW max power dissipation in SC70, continuous operation at 85°C requires limiting internal power: at 3.3V and 24mA load, P_OUT ≈ 79mW - well within limit, but PCB copper area and airflow must ensure junction temperature stays ≤125°C.