My Inquiry
My Account
Texas Instruments SN74AUC1G240DCKR
- Part No.:
- SN74AUC1G240DCKR
- Manufacturer:
- Texas Instruments
- Package:
- 5-TSSOP, SC-70-5, SOT-353
- Datasheet:
-
SN74AUC1G240DCKR.pdf
- Description:
- IC BUFFER INVERT 2.7V SC70-5
- Quantity:
- Payment:
- Shipping:
Inventory:2,394
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SN74AUC1G240DCKR from Texas Instruments is a single noninverting buffer/driver with 3-state output, designed for 1.65-V to 1.95-V operation and 3.6-V I/O tolerance. It delivers ±8-mA drive at 1.8 V, achieves 2.5-ns max propagation delay, consumes ≤10-µA ICC, and supports partial-power-down via Ioff. It is used in low-voltage logic interfacing between mixed-supply domains in portable and space-constrained systems.
For engineers reviewing the SN74AUC1G240DCKR datasheet, SN74AUC1G240DCKR pinout, SN74AUC1G240DCKR application, or SN74AUC1G240DCKR equivalent, key selection criteria include 1.8-V optimized timing, sub-1-V operability, 3-state bus isolation capability, SC-70 (DCK) package footprint, and Ioff-enabled power sequencing in multi-rail systems.
Technical Context
This device implements a single-channel noninverting buffer with active-low 3-state control (OE high disables output). Its logic diagram confirms direct A→Y path with OE gating the output stage, enabling high-impedance state independent of input level. The internal architecture supports simultaneous operation across 0.8-V to 2.7-V VCC but is characterized and optimized specifically for 1.65–1.95 V.
It features Ioff circuitry that disables outputs during power-down, preventing backflow current when VCC = 0 V while inputs/outputs are biased up to 3.6 V. Absolute maximum ratings permit VI/VO up to 3.6 V regardless of VCC, enabling robust mixed-mode signal translation without external level shifters.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 0.8 V to 2.7 V - supports ultra-low-voltage operation down to sub-1-V, enabling compatibility with advanced process nodes and battery-sensitive designs. |
| Max tpd @ 1.8 V | 2.5 ns - ensures minimal signal delay in high-speed data paths such as memory interface buffers or clock distribution staging. |
| Output Drive | ±8 mA @ 1.8 V - sufficient to drive multiple CMOS loads or short PCB traces without external buffering in compact digital subsystems. |
| Ioff Current | ±10 µA @ 2.7 V - guarantees safe isolation during partial power-down, eliminating risk of current injection into unpowered rails. |
| IOZ (Off-State Leakage) | ±10 µA @ 2.7 V - maintains high-impedance integrity on shared buses, preventing unintended loading or contention. |
| ESD Rating | 2000-V HBM - meets industrial-grade robustness requirements for handling and board-level integration without additional protection. |
| Input Thresholds | VIL = 0.35×VCC, VIH = 0.65×VCC - provides noise margin >30% of VCC across full operating range, ensuring reliable switching in noisy environments. |
Pinout & Package
SN74AUC1G240DCKR uses the SC-70 (DCK) 5-pin surface-mount package (2.47 mm × 2.3 mm × 1.1 mm max height), optimized for high-density PCB layouts. Pin 1 is located in quadrant Q3 per tape-and-reel orientation standard.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | GND | Ground reference for all internal circuitry and output stage return path; must be low-impedance connection to minimize noise coupling. |
| 2 | A | Noninverting data input; accepts 0.8–3.6 V logic levels and drives internal buffer stage directly. |
| 3 | OE | Active-high 3-state enable; high = high-impedance output, low = functional buffer; requires pullup to VCC for power-up safety. |
| 4 | VCC | Supply voltage input; powers internal logic and output driver; supports 0.8–2.7 V with optimal performance at 1.65–1.95 V. |
| 5 | Y | Noninverting 3-state output; provides buffered A signal when OE is low; floats to high-Z when OE is high. |
Key Features
| Feature | Design Value |
|---|---|
| NanoFree™ WCSP option available | Die-as-package construction eliminates leadframe, reducing size and inductance - not applicable to DCK variant but confirms TI's ultra-miniaturization roadmap. |
| 3.6-V I/O tolerance | Allows safe interfacing with higher-voltage logic (e.g., 3.3-V microcontrollers) while powered from 1.8 V, eliminating discrete level shifters. |
| Ioff partial-power-down support | Enables hot-plug and rail-sequence-flexible system design by blocking current flow when VCC = 0 V and I/O pins are biased. |
| Sub-1-V operability | Validated down to 0.8 V VCC - supports emerging ultra-low-power modes in wearables and energy-harvesting systems. |
| Low ICC (≤10 µA) | Minimizes quiescent power in always-on signal conditioning paths, critical for battery lifetime in IoT endpoint devices. |
Applications
| Mobile Baseband Interface | Low-Power Sensor Hub |
|---|---|
Use Scenario: Interfacing a 1.8-V application processor GPIO to a 3.3-V PMIC status line in smartphone power management. IC Role / Device Role / Timing Role: Level-translating buffer with 3-state isolation during processor sleep mode. Use Value: Eliminates need for discrete MOSFET level shifter; Ioff prevents backfeed into powered-down processor rail. | Use Scenario: Isolating I²C SDA/SCL lines between a 1.8-V sensor fusion MCU and 3.3-V environmental sensors during MCU deep-sleep. IC Role / Device Role / Timing Role: Bidirectional bus buffer controlled by MCU wake signal to gate sensor communication. Use Value: Enables zero-current sensor bus hold during sleep; 2.5-ns tpd preserves I²C timing margins at 400 kHz. |
| FPGA Configuration Bus | Wearable Display Interface |
Use Scenario: Driving configuration data from a 1.8-V FPGA bank to a 2.5-V configuration PROM during power-up sequencing. IC Role / Device Role / Timing Role: Unidirectional data buffer with OE synchronized to FPGA INIT_B assertion. Use Value: Ensures clean, glitch-free PROM address/data setup; 3.6-V tolerance accommodates PROM's 2.5-V VCC without clamping diodes. | Use Scenario: Buffering touch controller interrupt signals from a 1.2-V ASIC to a 1.8-V display driver IC in smartwatch UI subsystem. IC Role / Device Role / Timing Role: Low-latency interrupt path isolator activated only during active display mode. Use Value: Sub-1-V operation matches ASIC's lowest power domain; SC-70 footprint fits tight bezel constraints. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar single-buffer-with-3-state-output applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74LVC1G125DCKR | Higher ICC (max 10 µA vs. 10 µA same), lower drive (±24 mA @ 3.3 V), wider VCC (1.65–5.5 V), no sub-1-V operation | Better suited for 3.3-V dominant systems; lacks 0.8-V operability and 3.6-V I/O tolerance | Select when interfacing legacy 3.3-V logic and higher drive is needed; avoid for <1.2-V domains. |
| NC7SZ125P5X | Smaller 1.2-mm × 1.5-mm SOT-353 package; similar 1.65–5.5 V range; no Ioff; max tpd = 3.5 ns @ 3.3 V | Targeted at ultra-small footprints where Ioff is not required; no partial-power-down support | Choose for space-critical designs without rail sequencing needs; verify bus contention risk during power transitions. |
Compared with SN74AUC1G240DCKR, SN74LVC1G125DCKR offers broader voltage flexibility but sacrifices sub-1-V operation and mixed-mode I/O robustness, while NC7SZ125P5X trades Ioff and timing performance for minimal footprint - making SN74AUC1G240DCKR the optimal choice for 1.8-V systems requiring guaranteed power-down isolation and ultra-fast response.
Availability
SN74AUC1G240DCKR is available at Aetrix Electronics and suitable for mobile baseband interfaces, low-power sensor hubs, FPGA configuration buses, wearable display interfaces, and industrial I/O modules requiring stable component supply across extended temperature ranges.
Supply support for SN74AUC1G240DCKR 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 connectivity technologies, with over 90 years of innovation in industrial, automotive, and consumer electronics.
The SN74AUC1G240 belongs to TI's AUC logic family - engineered for ultra-low-voltage, high-speed operation in portable and battery-powered systems where power efficiency and signal integrity are critical.
FAQ
What is the minimum operating voltage for SN74AUC1G240DCKR?
The SN74AUC1G240DCKR is fully specified down to 0.8 V VCC and operates reliably in sub-1-V domains. This enables use in ultra-low-power states of modern SoCs and energy-harvesting systems where supply rails dip below 1.0 V. Performance parameters including tpd and drive strength are characterized across the full 0.8–2.7 V range, with optimal timing at 1.65–1.95 V.
Does SN74AUC1G240DCKR support mixed-voltage interfacing?
Yes, SN74AUC1G240DCKR supports mixed-voltage interfacing through its 3.6-V I/O tolerance: inputs and outputs withstand up to 3.6 V regardless of VCC, allowing safe connection to 3.3-V or 2.5-V logic while powered from 1.8 V. This eliminates external level-shifting components in multi-rail systems like mobile baseband or sensor hubs.
How does the Ioff feature function in SN74AUC1G240DCKR?
The Ioff feature in SN74AUC1G240DCKR disables output drivers when VCC = 0 V, limiting input/output leakage to ±10 µA even if pins are biased to 2.7 V. This prevents damaging current backflow during partial power-down - essential for hot-plug, rail-sequencing, and battery-backed subsystems. OE state remains irrelevant during power-off; Ioff activates automatically.
What is the recommended pull-up resistor value for OE on SN74AUC1G240DCKR?
TI recommends tying OE to VCC via a pull-up resistor to ensure high-impedance state at power-up. The minimum value depends on the current-sinking capability of the driving source; for typical microcontroller GPIOs (±20 mA), a 10-kΩ resistor provides sufficient margin. Lower values (e.g., 4.7 kΩ) improve noise immunity but increase static current; values above 100 kΩ risk slow rise time in noisy environments.
Is SN74AUC1G240DCKR pin-compatible with other SC-70 logic buffers?
SN74AUC1G240DCKR uses the standard SC-70-5 pinout (GND-A-OE-VCC-Y), matching industry-standard pin assignments for single-gate buffers like SN74LVC1G125DCKR and NC7SZ125P5X. However, functional differences - especially Ioff presence, voltage range, and timing - require validation in the target application; physical compatibility does not guarantee drop-in replacement.
SN74AUC1G240DCKR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74AUC
- Package/Case:
- 5-TSSOP, SC-70-5, SOT-353
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Logic Type:
- Buffer, Inverting
- Number of Elements:
- 1
- 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:
- SC-70-5
SN74AUC1G240DCKR FAQ
1.How can I place an order for SN74AUC1G240DCKR through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74AUC1G240DCKR 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 SN74AUC1G240DCKR reliable?
The price and inventory of SN74AUC1G240DCKR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74AUC1G240DCKR is usually 5 days.
3.What payment methods are accepted for SN74AUC1G240DCKR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN74AUC1G240DCKR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SN74AUC1G240DCKR?
SN74AUC1G240DCKR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN74AUC1G240DCKR 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 SN74AUC1G240DCKR?
For technical support, including SN74AUC1G240DCKR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74AUC1G240DCKR requirements.
6.How does Aetrix verify that SN74AUC1G240DCKR is sourced from the original manufacturer or authorized distributors?
All SN74AUC1G240DCKR 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 SN74AUC1G240DCKR meets industry standards.
7.What is the process for return or replacement of SN74AUC1G240DCKR?
All SN74AUC1G240DCKR units undergo pre-shipment inspection (PSI). If there is an issue with SN74AUC1G240DCKR, 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 SN74AUC1G240DCKR part is unused and in its original packaging.
Return procedure for SN74AUC1G240DCKR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SN74AUC1G240DCKR 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…
