Texas Instruments SN74AUP2G240DCUR

Overview

SN74AUP2G240 from Texas Instruments is a dual 3-state buffer/driver IC optimized for low-power, 3.3-V operation in memory address and bus interface applications. It features two independent noninverting buffers, each with separate 3-state output control (1OE, 2OE), operates across 0.8 V to 3.6 V, delivers tpd ≤ 4.7 ns at 3.3 V (CL = 15 pF), and supports Ioff partial-power-down mode.

For engineers reviewing the SN74AUP2G240 datasheet, SN74AUP2G240 pinout, SN74AUP2G240 application, or SN74AUP2G240 equivalent, key selection criteria include its ultra-low static current (ICC ≤ 0.9 mA), input capacitance (Ci = 1.5 pF), dynamic power dissipation (Cpd = 4.3 pF at 3.3 V), and compatibility with mixed-mode signal environments via 3.6-V I/O tolerance.

Technical Context

The SN74AUP2G240 implements dual independent noninverting buffer logic with active-low 3-state enable inputs (1OE, 2OE) controlling output high-impedance states. Each channel drives one output (1Y, 2Y) from its respective input (1A, 2A), with no internal inversion or feedback path.

It uses TI's AUP (Advanced Ultra-Low-Power) CMOS process, enabling operation down to 0.8 V while maintaining rail-to-rail output swing, sub-1-µA static leakage (Ioff ≤ 0.6 µA), and robust latch-up immunity (>100 mA per JESD78 Class II). Signal integrity is enhanced by <10% VCC overshoot/undershoot and fast edge rates (Δt/Δv ≤ 200 ns/V).

Key Specifications

Pinout & Package

VSSOP-8 (DCU) package: 2.25 mm × 2.0 mm body, 0.5 mm pitch, 0.9 mm max height, exposed thermal pad optional, RoHS-compliant NiPdAu finish, MSL Level-1.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual 3-state buffer applications.

Compared with SN74LVC2G240DCUR and SN74AHC2G240DCUR, the SN74AUP2G240 uniquely balances ultra-low static/dynamic power, sub-1-V operation, and Ioff-enabled power-domain isolation-making it optimal for battery-constrained, multi-rail embedded systems requiring long-term reliability and minimal standby drain.

Availability

SN74AUP2G240 is available at Aetrix Electronics and suitable for memory address buffering, low-power clock distribution, and bus interface isolation requiring stable component supply across industrial, medical, and portable electronics programs.

Supply support for SN74AUP2G240 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 delivering analog, embedded processing, and connectivity solutions with emphasis on power efficiency, reliability, and system integration.

The SN74AUP2G240 belongs to TI's Advanced Ultra-Low-Power (AUP) logic family, designed specifically to extend battery life and improve signal integrity in portable, wearable, and energy-sensitive embedded systems.

FAQ

What is the minimum operating voltage for the SN74AUP2G240?

The SN74AUP2G240 supports a minimum supply voltage of 0.8 V, enabling operation in ultra-low-power battery-powered designs such as coin-cell–operated sensors and wearables. At this voltage, it maintains functional logic levels and specified propagation delay (tpd ≤ 24 ns at CL = 15 pF), though output drive strength is reduced compared to 3.3-V operation. The SN74AUP2G240 datasheet confirms full functionality across the entire 0.8 V to 3.6 V range.

Does the SN74AUP2G240 support partial-power-down mode?

Yes, the SN74AUP2G240 supports partial-power-down mode via its Ioff circuitry. When VCC = 0 V, the Ioff current is ≤ 0.6 µA, preventing damaging backflow current through the device even if input or output voltages reach up to 3.6 V. This feature is explicitly verified in the Electrical Characteristics table and enables safe use in hot-swap or multi-rail systems where subsystems power up/down independently. The SN74AUP2G240 implements this without external components.

What is the maximum load capacitance the SN74AUP2G240 can drive while maintaining timing specs?

The SN74AUP2G240 is characterized up to CL = 30 pF in its Switching Characteristics tables, with tpd ≤ 7.5 ns at 3.3 V. At CL = 15 pF (standard test condition), tpd is guaranteed ≤ 4.7 ns. Driving loads beyond 30 pF may increase delay and degrade edge rates but does not damage the device. For timing-critical applications like clock distribution, staying within 15–20 pF ensures margin against process/voltage/temperature variation. The SN74AUP2G240's low Cpd (4.3 pF) helps minimize cumulative loading in cascaded configurations.

Is the SN74AUP2G240 pin-compatible with other dual buffer variants in the AUP family?

Yes, the SN74AUP2G240 shares identical pinout (VSSOP-8 DCU), logic function, and electrical behavior with SN74AUP2G125 (noninverting buffer, active-high OE) and SN74AUP2G126 (inverting buffer, active-high OE) - all use the same DCU package and pin mapping for 1A, 1Y, 2A, 2Y, GND, VCC, and OE signals. However, OE polarity differs: SN74AUP2G240 uses active-low OE, while SN74AUP2G125/126 use active-high. The SN74AUP2G240 requires matching OE signal polarity in PCB layout and firmware.

What package options are available for the SN74AUP2G240 besides DCU?

In addition to the VSSOP-8 (DCU) package used in SN74AUP2G240DCUR, the SN74AUP2G240 is also offered in X2SON-8 (DQE), UQFN-8 (RSE), and NanoStar™ WCSP (YFP) packages. All share identical logic functionality and electrical specifications, differing only in footprint, thermal performance (e.g., YFP has θJA = 132°C/W), and assembly requirements. The DQE and RSE variants support higher-density layouts, while YFP enables chip-scale integration. The SN74AUP2G240 part number remains functionally consistent across all packages.