Texas Instruments SN74LVC2G17DBVRE4

Overview

SN74LVC2G17DBVRE4 from Texas Instruments is a dual Schmitt-trigger buffer IC designed for 1.65 V to 5.5 V operation, performing Y = A logic with hysteresis-enhanced noise immunity. It delivers ±24 mA output drive at 3.3 V, achieves 5.4 ns max propagation delay, and supports Ioff partial-power-down mode for live insertion in mixed-voltage systems such as portable audio docks and SSD power sequencing.

For engineers reviewing the SN74LVC2G17DBVRE4 datasheet, SN74LVC2G17DBVRE4 pinout, SN74LVC2G17DBVRE4 application, or SN74LVC2G17DBVRE4 equivalent, key selection criteria include its 6-pin SC70 package, Schmitt-trigger input thresholds (VT+ = 2.0 V, VT– = 1.3 V at 3 V), 5.5 V-tolerant inputs, and Ioff-enabled back-drive protection during system power-down sequences.

Technical Context

This device implements two independent noninverting buffers with Schmitt-trigger inputs, enabling robust signal conditioning of slow-rising or noisy digital signals. Its hysteresis (ΔVT = 0.4–1.1 V across VCC) prevents chatter on marginal transitions, while the Ioff circuit disables outputs when VCC = 0 V, blocking current backflow from powered subsystems.

The SN74LVC2G17DBVRE4 operates across –40°C to 125°C, supports voltage translation (e.g., 5 V → 3.3 V or 1.8 V), and features 5.5 V-tolerant inputs regardless of VCC level - a critical capability for interfacing legacy 5 V logic with modern low-voltage MCUs in consumer and industrial embedded designs.

Key Specifications

Pinout & Package

SN74LVC2G17DBVRE4 uses the SC70-6 (DCK) package: 2.00 mm × 1.25 mm body, 0.65 mm pitch, 0.9 mm height, JEDEC MO-203AA compliant. Pin 1 marked by dot; top-side orientation matches standard SC70 pin 1 quadrant (Q3).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual Schmitt-trigger buffer applications.

Compared with SN74LVC2G17DBVRE4, SN74LVC2G17DCKR offers identical performance in a functionally equivalent package but without the E4 suffix marking, while SN74LVC1G17DCKR provides half the channel count in a smaller 5-pin footprint - requiring layout changes but saving board area where dual buffering is unnecessary.

Availability

SN74LVC2G17DBVRE4 is available at Aetrix Electronics and suitable for portable audio docks, SSD power sequencing, industrial sensor interfaces, wireless peripheral reset management, and consumer display timing requiring stable component supply across extended temperature ranges.

Supply support for SN74LVC2G17DBVRE4 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

Texas Instruments is a global semiconductor leader specializing in analog, embedded processing, and logic solutions, with over 50 years of innovation in high-reliability IC design and manufacturing.

The SN74LVC2G17DBVRE4 belongs to TI's LVC logic family, engineered for low-voltage, high-speed, mixed-signal interface applications in portable, industrial, and computing systems demanding robust noise immunity and power flexibility.

FAQ

What is the maximum operating temperature for SN74LVC2G17DBVRE4?

The SN74LVC2G17DBVRE4 is fully specified from –40°C to +125°C ambient temperature. This rating is validated per JEDEC JESD78 Class II latch-up testing and thermal characterization data in the official datasheet SCES381N, making it suitable for under-hood automotive, telecom, and industrial control applications where thermal margins are critical.

Does SN74LVC2G17DBVRE4 support 5 V input signals when powered at 3.3 V?

Yes, SN74LVC2G17DBVRE4 supports 5.5 V-tolerant inputs - meaning it accepts input voltages up to 5.5 V regardless of VCC level. When powered at 3.3 V, the 1A and 2A pins safely interface with 5 V logic sources without clamping diodes or external resistors, enabling direct level translation in mixed-voltage systems.

What is the purpose of the Ioff feature in SN74LVC2G17DBVRE4?

The Ioff feature in SN74LVC2G17DBVRE4 disables output drivers and limits leakage current to ±10 μA when VCC = 0 V. This prevents damaging back-current flow from powered downstream circuits into the unpowered IC - a requirement for live insertion, hot-swap backplanes, and partial-power-down architectures in servers and modular electronics.

Which package type does SN74LVC2G17DBVRE4 use?

SN74LVC2G17DBVRE4 uses the SC70-6 (DCK) package: 2.00 mm × 1.25 mm body size, 0.65 mm pin pitch, JEDEC MO-203AA compliant. The "DBVRE4" suffix confirms SC70 packaging with NiPdAu lead finish and tape-and-reel delivery - distinct from SOT-23 (DBV) or SON (DRY/DSF) variants.

How does the Schmitt-trigger input improve noise immunity in SN74LVC2G17DBVRE4?

The Schmitt-trigger input in SN74LVC2G17DBVRE4 provides hysteresis - with VT+ = 2.0 V and VT– = 1.3 V at 3 V VCC - creating a 0.7 V noise margin. This prevents multiple output transitions when input signals cross the threshold slowly or contain noise spikes, making it ideal for debouncing switches, cleaning reset lines, and conditioning slow analog comparator outputs.