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Texas Instruments SN74AUP1T50DCKR
- Part No.:
- SN74AUP1T50DCKR
- Manufacturer:
- Texas Instruments
- Package:
- 5-TSSOP, SC-70-5, SOT-353
- Datasheet:
-
SN74AUP1T50DCKR.pdf
- Description:
- IC BUF NON-INVERT 3.6V SC70-5
- Quantity:
- Payment:
- Shipping:
Inventory:15,127
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Product details
Overview
SN74AUP1T50DCKR from Texas Instruments is a single-channel Schmitt-trigger buffer gate designed for logic-level translation between 1.8-V, 2.5-V, and 3.3-V systems. It features Ioff support, 0.1 µA static current, 4 mA output drive, and hysteresis (ΔVT = 210 mV) for noise immunity-used in portable sensor interfaces and mixed-signal MCU I/O bridging.
For engineers reviewing the SN74AUP1T50DCKR datasheet, SN74AUP1T50DCKR pinout, SN74AUP1T50DCKR application, or SN74AUP1T50DCKR equivalent, key selection criteria include its VCC range (2.3–3.6 V), Schmitt-trigger input thresholds (VIH/VIL = 1.19 V/0.5 V at 3.3 V), Ioff behavior at 0 V supply, and SC-70 (DCK) 5-pin package compatibility with space-constrained PCB layouts.
Technical Context
The SN74AUP1T50DCKR implements a noninverting Boolean function Y = A with Schmitt-trigger inputs optimized for slow or noisy signal transitions. Its input hysteresis (ΔVT = 0.15–0.6 V depending on VCC) rejects noise while maintaining clean CMOS output levels referenced to VCC.
It supports single-supply level translation across 1.8 V ↔ 2.5 V ↔ 3.3 V domains without external biasing. The Ioff feature enables safe operation during partial power-down (VCC = 0 V), allowing signals up to 3.6 V on inputs/outputs without damage or leakage path formation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 2.3 V to 3.6 V - enables flexible integration into 2.5-V or 3.3-V systems with margin for rail variation |
| Input Threshold Hysteresis ΔVT | 0.15–0.6 V - provides robust noise rejection for slow-rising analog-like digital signals |
| Ioff Current | ≤ 0.5 µA at VCC = 0 V - prevents back-powering and leakage when host supply is off |
| Output Drive | ±4 mA - reduces overshoot/undershoot on 50-Ω traces without external termination |
| Propagation Delay tpd | 1.6–4.4 ns (CL = 5–30 pF, VCC = 3.3 V) - supports >100 MHz signal integrity in low-capacitance paths |
| Static ICC | 0.9 µA max - extends battery life in always-on wake-up or monitoring circuits |
| ESD Rating | 2000-V HBM - meets industrial I/O robustness requirements without added protection diodes |
Pinout & Package
SC-70 (DCK) package: 2.1 mm × 2.0 mm × 1.1 mm height, 5-pin surface-mount, moisture sensitivity level 1 (260 °C peak reflow).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - A | Schmitt-trigger input | Accepts 1.8-V/2.5-V/3.3-V logic; hysteresis ensures clean switching despite slow edges or noise |
| 2 - GND | Ground reference | Return path for all internal logic and output current; must be low-impedance for stable threshold operation |
| 3 - Y | CMOS output | Drives 3.3-V CMOS loads up to 4 mA; output voltage swing is 0–VCC with VOL ≤ 0.45 V, VOH ≥ 2.55 V |
| 4 - NC | No-connect terminal | Internally unconnected; no electrical function; must remain floating or grounded per layout best practice |
| 5 - VCC | Supply input | Single power rail defining output logic levels; supports 2.3–3.6 V; powers internal bias and output stage |
Key Features
| Feature | Design Value |
|---|---|
| Single-supply level translation | Eliminates need for dual-rail supplies or external resistive translators in 1.8-V ↔ 3.3-V interface designs |
| Schmitt-trigger input | Enables reliable detection of slow-switching signals (e.g., pushbuttons, thermistor-based comparators) without external hysteresis circuitry |
| Ioff protection | Allows hot-plug or partial-power-down operation where VCC may be inactive while other system rails remain live |
| Ultra-low static power | 0.1 µA typical ICC enables use in battery-backed real-time clock enable paths or always-on sensor wake logic |
| Optimized output drive | 4 mA drive strength balances signal integrity and EMI-reducing ringing on short PCB traces without series termination |
Applications
| Industrial Sensor Interface | Portable MCU I/O Expansion |
|---|---|
Use Scenario: Interfacing a 1.8-V temperature sensor output to a 3.3-V microcontroller ADC trigger input in a battery-powered environmental monitor. IC Role / Device Role / Timing Role: Level translator and noise filter-converts sub-2-V sensor logic to full 3.3-V swing while rejecting EMI-induced glitches on long sensor traces. Use Value: Eliminates discrete resistor-divider + Schmitt buffer solution, reducing BOM count by 3 components and PCB area by >2 mm². | Use Scenario: Adding GPIO wake capability to an ultra-low-power wearable MCU that powers down its main VCC rail but keeps peripheral sensors active. IC Role / Device Role / Timing Role: Ioff-enabled signal bridge-passes interrupt pulses from 2.5-V motion sensor to MCU's 3.3-V wake pin even when MCU VCC = 0 V. Use Value: Enables true zero-power standby mode without risk of back-current or latch-up during sleep/wake transitions. |
| Automotive Body Control Module | Mixed-Signal Test Equipment |
Use Scenario: Isolating noisy 12-V switch inputs (via opto-coupler output) from a 3.3-V CAN controller's GPIO line in a door module. IC Role / Device Role / Timing Role: Input conditioner-converts opto-output's marginal rise/fall times into clean CMOS edges compatible with CAN controller timing budgets. Use Value: Prevents false edge detection caused by contact bounce or EMI, improving system reliability without adding RC filters or firmware debouncing overhead. | Use Scenario: Driving multiple 3.3-V logic analyzer channels from a single 1.8-V FPGA test pattern generator output. IC Role / Device Role / Timing Role: Fan-out buffer with level shift-maintains signal fidelity across 5+ parallel loads while translating voltage domain. Use Value: Achieves <4.4 ns propagation delay with <100 ps skew across outputs, preserving timing correlation critical for high-speed digital validation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar logic-level translation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74LVC1T45DBVR | Bidirectional translation; no Schmitt input; higher ICC (10 µA); supports 1.65–5.5 V VCC | Requires direction control signal; unsuitable for noise-prone or slow-edge inputs without external filtering | Choose when bidirectional data flow (e.g., I²C pull-up domain shifting) is required and input noise is minimal |
| NC7SZ57P5X | Unidirectional; Schmitt input; lower drive (2.6 mA); smaller 1.2-mm² SOT-353 package | Limited to 1.65–3.6 V VCC; not qualified for industrial temp range (–40°C to 85°C) | Choose for space-constrained consumer designs where industrial temperature rating is unnecessary |
Compared with SN74LVC1T45DBVR and NC7SZ57P5X, the SN74AUP1T50DCKR uniquely combines Schmitt-trigger noise immunity, Ioff, and ultra-low static power in a production-qualified industrial-grade SC-70 package-making it optimal for battery-sensitive, noise-prone, or partial-power-down embedded interfaces.
Availability
SN74AUP1T50DCKR is available at Aetrix Electronics and suitable for industrial sensor interfaces, portable MCU I/O expansion, automotive body control modules, and mixed-signal test equipment requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for SN74AUP1T50DCKR 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 broad industrial, automotive, and consumer design support.
The SN74AUP1T50DCKR belongs to TI's AUP (Advanced Ultra-Low-Power) logic family-designed specifically for extending battery life and enabling robust level translation in space- and power-constrained mixed-voltage systems.
FAQ
What is the maximum input voltage allowed on the A pin of SN74AUP1T50DCKR when VCC = 0 V?
When VCC = 0 V, the SN74AUP1T50DCKR supports input voltages from 0 V to 3.6 V on the A pin due to its Ioff feature. This prevents damage and avoids back-current paths, making the SN74AUP1T50DCKR suitable for hot-swap or partial-power-down scenarios in portable systems.
Does SN74AUP1T50DCKR support 1.8-V to 3.3-V level translation with guaranteed timing performance?
Yes. The SN74AUP1T50DCKR guarantees tpd ≤ 2.5 ns (min) and ≤ 9.8 ns (max) for 1.8-V input to 3.3-V output translation at VCC = 3.3 V and CL = 15 pF. These values are specified across –40°C to 85°C and ensure deterministic timing in mixed-voltage signal routing.
Can SN74AUP1T50DCKR drive a 50-Ω transmission line directly?
No. The SN74AUP1T50DCKR has a 4-mA output drive capability, which corresponds to ~83 Ω effective source impedance at 3.3 V. For controlled-impedance 50-Ω lines, a series resistor (~33 Ω) is recommended to suppress reflections-verified in TI's application note SCBA004 for the SN74AUP1T50DCKR.
Is the NC pin on SN74AUP1T50DCKR required to be left floating or can it be grounded?
The NC pin on the SN74AUP1T50DCKR is internally unconnected and may be left floating or tied to GND per board layout convenience. TI's datasheet does not mandate either connection, but grounding is preferred in high-noise environments to minimize parasitic coupling into adjacent pins.
What is the minimum VCC required for SN74AUP1T50DCKR to meet its published VIH/VIL specifications?
The SN74AUP1T50DCKR requires VCC ≥ 2.3 V to guarantee VIH ≥ 1.1 V and VIL ≤ 0.6 V per its recommended operating conditions. Below 2.3 V, input thresholds degrade and are not characterized-so 2.3 V is the functional lower limit for compliant logic-level translation using the SN74AUP1T50DCKR.
SN74AUP1T50DCKR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74AUP
- Package/Case:
- 5-TSSOP, SC-70-5, SOT-353
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Logic Type:
- Buffer, Non-Inverting
- Number of Elements:
- 1
- Number of Bits per Element:
- 1
- Input Type:
- Schmitt Trigger
- Output Type:
- Push-Pull
- Current - Output High, Low:
- 4mA, 4mA
- Voltage - Supply:
- 2.3V ~ 3.6V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-70-5
SN74AUP1T50DCKR FAQ
1.How can I place an order for SN74AUP1T50DCKR through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74AUP1T50DCKR 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 SN74AUP1T50DCKR reliable?
The price and inventory of SN74AUP1T50DCKR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74AUP1T50DCKR is usually 5 days.
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SN74AUP1T50DCKR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN74AUP1T50DCKR 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 SN74AUP1T50DCKR?
For technical support, including SN74AUP1T50DCKR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74AUP1T50DCKR requirements.
6.How does Aetrix verify that SN74AUP1T50DCKR is sourced from the original manufacturer or authorized distributors?
All SN74AUP1T50DCKR 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 SN74AUP1T50DCKR meets industry standards.
7.What is the process for return or replacement of SN74AUP1T50DCKR?
All SN74AUP1T50DCKR units undergo pre-shipment inspection (PSI). If there is an issue with SN74AUP1T50DCKR, 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 SN74AUP1T50DCKR part is unused and in its original packaging.
Return procedure for SN74AUP1T50DCKR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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