My Inquiry
My Account
Texas Instruments SN74AUC2G240DCTR
- Part No.:
- SN74AUC2G240DCTR
- Manufacturer:
- Texas Instruments
- Package:
- 8-LSSOP, 8-MSOP (0.110", 2.80mm Width)
- Datasheet:
-
SN74AUC2G240DCTR.pdf
- Description:
- IC BUFFER INVERT 2.7V SM8
- Quantity:
- Payment:
- Shipping:
Inventory:2,007
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SN74AUC2G240DCTR from Texas Instruments is a dual 1-bit noninverting buffer/driver with independent 3-state outputs, designed for 1.65-V to 1.95-V operation and 3.6-V I/O tolerance. It delivers ±8-mA output drive at 1.8 V, achieves 1.8-ns max propagation delay (tpd), and consumes only 10 µA ICC at 1.8 V. It is used in low-voltage memory address buffering, clock distribution, and bus interface applications where sub-1.8-V logic compatibility and high-density packaging are critical.
For engineers reviewing the SN74AUC2G240DCTR datasheet, SN74AUC2G240DCTR pinout, SN74AUC2G240DCTR application, or SN74AUC2G240DCTR equivalent, key selection considerations include its 1.8-V optimized timing performance, Ioff partial-power-down support, 3.6-V tolerant I/O, SSOP-8 (DCT) package footprint, and guaranteed 3-state behavior during power sequencing.
Technical Context
This device implements two independent noninverting buffers, each with dedicated output-enable (OE) control. Each channel passes A→Y when OE is low and enters high-impedance (Z) when OE is high - confirmed by the function table and logic diagram. The Ioff circuitry actively disables outputs during power-down, preventing backflow current when VCC = 0 V.
It operates across 0.8 V to 2.7 V VCC but is characterized and optimized specifically for 1.65–1.95 V supply range. All inputs and outputs are 3.6-V tolerant, enabling mixed-voltage interfacing with higher-supply systems without level shifters.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 0.8 V to 2.7 V; fully functional down to 0.8 V, but specified and optimized for 1.65–1.95 V operation |
| Max tpd @ 1.8 V | 1.8 ns; enables high-speed signal routing in compact low-voltage digital interfaces |
| Output Drive | ±8 mA @ 1.8 V; sufficient to drive 15-pF loads with clean edges in dense PCB layouts |
| Ioff Support | Yes; blocks current flow between powered/unpowered sections during partial power-down |
| I/O Voltage Tolerance | 3.6 V; allows safe connection to 3.3-V or 2.5-V buses without external protection |
| ICC @ 1.8 V | 10 µA; ultra-low quiescent power ideal for battery-backed or always-on subsystems |
| ESD Rating | 2000-V HBM; meets industrial-grade robustness requirements without added protection circuitry |
Pinout & Package
SN74AUC2G240DCTR uses the SSOP-8 (DCT) package: 3.0 mm × 3.0 mm body, 1.3 mm max height, 0.65 mm lead pitch, gull-wing leads, RoHS-compliant NiPdAu finish, MSL Level-1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | 1A (Input) | First buffer input; accepts 0.8–2.7 V logic signals with 3.6-V tolerance |
| 2 | 1Y (Output) | First buffer output; driven low/high or placed in high-Z based on 1OE state |
| 3 | 2A (Input) | Second buffer input; electrically isolated from Channel 1, same voltage specs |
| 4 | 2Y (Output) | Second buffer output; independently controlled by 2OE, supports concurrent 3-state operation |
| 5 | GND | Ground reference for both channels and internal logic; must be low-impedance |
| 6 | 2OE (Output Enable) | Active-low enable for Channel 2; low = pass A→Y, high = high-Z output |
| 7 | 1OE (Output Enable) | Active-low enable for Channel 1; decoupled from 2OE for independent channel control |
| 8 | VCC | Supply rail; powers both buffers and OE logic; supports 0.8–2.7 V with tight regulation |
Key Features
| Feature | Design Value |
|---|---|
| NanoFree™-compatible footprint | SSOP-8 (DCT) package enables drop-in replacement for legacy 8-pin logic while maintaining thermal and mechanical reliability |
| Sub-1-V operability | Functional at 0.8 V VCC - supports emerging ultra-low-power microcontroller I/O domains and energy-harvesting systems |
| 3.6-V I/O tolerance | Allows direct interfacing with 3.3-V peripherals without level translators, reducing BOM count and layout complexity |
| Independent 3-state control | Separate 1OE and 2OE pins enable selective channel isolation - critical for shared bus arbitration and hot-swap signaling |
| Ioff partial-power-down | Prevents damaging back-current when VCC = 0 V and I/O lines remain active - essential for modular system power sequencing |
Applications
| Memory Address Buffering | Low-Voltage Clock Distribution |
|---|---|
Use Scenario: Driving address lines from a 1.8-V microcontroller to multiple 3.3-V SRAM chips in a portable medical data logger. IC Role / Device Role / Timing Role: Dual buffer isolates MCU I/O from bus capacitance, provides level-tolerant drive, and enables per-channel disable during standby. Use Value: Eliminates need for discrete level shifters and reduces total propagation delay to ≤1.8 ns, preserving setup/hold timing margins. |
Use Scenario: Distributing a 1.8-V system clock to three low-power sensor interface ICs operating at different supply voltages (1.8 V, 2.5 V, 3.3 V). IC Role / Device Role / Timing Role: Noninverting driver with 3.6-V I/O tolerance delivers clean, low-skew clock edges to mixed-voltage receivers. Use Value: Maintains <1.8 ns tpd and ±8-mA drive across all loads, ensuring jitter-free sampling and eliminating clock tree skew compensation. |
| Industrial Bus Interface | Power-Managed Peripheral Isolation |
Use Scenario: Interfacing a 1.8-V FPGA I/O bank to a 3.3-V CAN transceiver and SPI flash in an industrial PLC module. IC Role / Device Role / Timing Role: Bidirectional-capable buffer (via OE control) routes control signals while blocking reverse current during fault conditions. Use Value: 3.6-V I/O tolerance and Ioff support prevent latch-up during transceiver overvoltage events and enable safe hot-plug operation. |
Use Scenario: Isolating a 1.8-V display controller from a 3.3-V backlight driver in a handheld HMI, where backlight may be powered off independently. IC Role / Device Role / Timing Role: Independent OE pins allow display data path to remain active while disabling backlight control lines during sleep mode. Use Value: Ioff prevents backfeed into the powered-down backlight section, avoiding unintended LED activation and leakage-induced battery drain. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual 3-state buffer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74LVC2G240DCTR | Higher ICC (10 µA vs. 20 µA typical), slower tpd (2.5 ns @ 1.8 V), 1.65–5.5 V VCC range | Wider supply range suits mixed 3.3-V/5-V systems but sacrifices speed and ultra-low-power advantage | Choose when broader voltage compatibility outweighs need for sub-2-ns timing and 10-µA quiescent current. |
| 74AUP2G240GS,115 | NXP part; lower ICC (0.9 µA), slower tpd (3.3 ns @ 1.8 V), same 0.8–2.7 V VCC, smaller XSON-8 package | Optimized for ultra-low static power in wearables, but not suitable for timing-critical clock paths | Choose for battery-constrained applications where nanosecond-level delay is noncritical and board space is premium. |
Compared with SN74LVC2G240DCTR and 74AUP2G240GS,115, the SN74AUC2G240DCTR uniquely balances 1.8-ns speed, 10-µA ICC, and 3.6-V I/O tolerance in a standard SSOP-8 footprint - making it optimal for high-density, low-voltage, timing-sensitive bus and clock applications.
Availability
SN74AUC2G240DCTR is available at Aetrix Electronics and suitable for memory address buffering, low-voltage clock distribution, industrial bus interface, and power-managed peripheral isolation requiring stable component supply, long-term lifecycle support, and consistent SSOP-8 sourcing.
Supply support for SN74AUC2G240DCTR 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 focused on analog, embedded processing, and connectivity technologies, serving industrial, automotive, and consumer markets with high-reliability silicon and design resources.
The SN74AUC2G240 belongs to TI's AUC Sub-1-V Little Logic family, engineered specifically for ultra-low-voltage, high-speed digital interface applications in space-constrained, power-sensitive systems.
FAQ
What is the minimum operating voltage for SN74AUC2G240DCTR?
The SN74AUC2G240DCTR is fully operational down to 0.8 V VCC, though it is specifically optimized and characterized for 1.65–1.95 V operation. At 0.8 V, it maintains functionality with reduced drive strength and increased propagation delay, as verified in the recommended operating conditions table.
Does SN74AUC2G240DCTR support partial-power-down operation?
Yes, SN74AUC2G240DCTR includes Ioff circuitry that disables outputs when VCC = 0 V, preventing damaging current backflow from live I/O lines into the unpowered device - a requirement confirmed in the datasheet's "Ioff Supports Partial-Power-Down Mode" feature and electrical characteristics table.
Can SN74AUC2G240DCTR safely interface with 3.3-V logic?
Yes, SN74AUC2G240DCTR inputs and outputs are rated for 3.6-V tolerance, allowing direct connection to 3.3-V systems without level-shifting components. This is explicitly stated under "3.6-V I/O Tolerant to Support Mixed-Mode Signal Operation" and verified in the Absolute Maximum Ratings and Recommended Operating Conditions tables.
What is the maximum propagation delay of SN74AUC2G240DCTR at 1.8 V?
The maximum propagation delay (tpd) of SN74AUC2G240DCTR is 1.8 ns at VCC = 1.8 V, CL = 15 pF, and RL = 2 kΩ - a value confirmed in the Switching Characteristics table under "VCC = 1.8 V" column and "tpd A → Y" row.
Is SN74AUC2G240DCTR available in tape-and-reel packaging?
Yes, SN74AUC2G240DCTR is supplied in tape-and-reel format: 3000 units per reel, SSOP-8 (DCT) package, RoHS-compliant, MSL Level-1, with reel width 12.4 mm and pin-1 quadrant Q3 - as documented in TI's Packaging Information and Tape and Reel Information tables.
SN74AUC2G240DCTR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74AUC
- Package/Case:
- 8-LSSOP, 8-MSOP (0.110", 2.80mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Logic Type:
- Buffer, Inverting
- Number of Elements:
- 2
- Number of Bits per Element:
- 1
- Input Type:
- -
- Output Type:
- 3-State
- Current - Output High, Low:
- 9mA, 9mA
- Voltage - Supply:
- 0.8V ~ 2.7V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SM8
SN74AUC2G240DCTR FAQ
1.How can I place an order for SN74AUC2G240DCTR through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74AUC2G240DCTR on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for SN74AUC2G240DCTR reliable?
The price and inventory of SN74AUC2G240DCTR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74AUC2G240DCTR is usually 5 days.
3.What payment methods are accepted for SN74AUC2G240DCTR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN74AUC2G240DCTR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SN74AUC2G240DCTR?
SN74AUC2G240DCTR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN74AUC2G240DCTR order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for SN74AUC2G240DCTR?
For technical support, including SN74AUC2G240DCTR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74AUC2G240DCTR requirements.
6.How does Aetrix verify that SN74AUC2G240DCTR is sourced from the original manufacturer or authorized distributors?
All SN74AUC2G240DCTR products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that SN74AUC2G240DCTR meets industry standards.
7.What is the process for return or replacement of SN74AUC2G240DCTR?
All SN74AUC2G240DCTR units undergo pre-shipment inspection (PSI). If there is an issue with SN74AUC2G240DCTR, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The SN74AUC2G240DCTR part is unused and in its original packaging.
Return procedure for SN74AUC2G240DCTR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SN74AUC2G240DCTR Tags
-
SN74LVC1G17DBVR
Texas Instruments
-
SN74LVC1G07DCKR
Texas Instruments
-
SN74LVC1G17DCKR
Texas Instruments
-
SN74LVC1G07DBVR
Texas Instruments
-
SN74LVC1G125DCKR
Texas Instruments
-
SN74AHCT1G126DBVR
Texas Instruments
-
SN74LVC1G125DBVR
Texas Instruments
-
SN74AHCT1G125DBVR
Texas Instruments
-
SN74LVC2G17DBVR
Texas Instruments
-
SN74LVC2G07DCKR
Texas Instruments
-
SN74LVC1G34DCKR
Texas Instruments
-
SN74LVC2G17DCKR
Texas Instruments
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
