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Texas Instruments SN74HCS7266PWR
- Part No.:
- SN74HCS7266PWR
- Manufacturer:
- Texas Instruments
- Category:
- Gates and Inverters
- Package:
- 14-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
SN74HCS7266PWR.pdf
- Description:
- IC GATE XNOR 4CH 2-INP 14TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,754
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Product details
Overview
SN74HCS7266PWR from Texas Instruments is a quadruple 2-input XNOR gate IC with Schmitt-trigger inputs, operating across 2 V to 6 V supply, delivering ±7.8-mA output drive at 5 V, and supporting industrial temperature range (–40°C to +125°C); used in phase-difference detection and noise-immune logic interfacing.
For engineers reviewing the SN74HCS7266PWR datasheet, SN74HCS7266PWR pinout, SN74HCS7266PWR application, or SN74HCS7266PWR equivalent, key selection criteria include hysteresis voltage (ΔVT = 0.6–1.6 V), ultra-low ICC (100 nA typical), Schmitt-trigger input tolerance for slow/noisy signals, and TSSOP-14 package compatibility with high-density PCB layouts.
Technical Context
This device implements four independent positive-logic XNOR gates (Y = A ⊕ B) with balanced CMOS push-pull outputs and integrated Schmitt-trigger input stages. Each channel features programmable hysteresis (ΔVT up to 1.6 V at 6 V), enabling robust operation with input rise/fall times exceeding standard CMOS limits.
The input stage uses clamping diodes for ESD protection (±4000-V HBM), while output drive capability (±7.8 mA at 6 V) supports direct interfacing with multiple CMOS loads. Thermal resistance (RθJA = 151.7°C/W) and low ICC ensure stable performance in thermally constrained embedded systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2 V to 6 V - enables single-rail operation across legacy 3.3 V and modern 5 V systems without level-shifting. |
| Propagation Delay (tpd) | 5 ns typical at 6 V - ensures timing-critical phase comparison with sub-10 ns resolution. |
| Hysteresis (ΔVT) | 0.6–1.6 V - rejects noise spikes ≤1.6 V peak-to-peak and accepts slow-rising inputs down to 100 µs transition time. |
| Output Drive Current | ±7.8 mA at 6 V - drives ≥10 standard CMOS inputs or one 50-Ω transmission line without buffering. |
| Supply Current (ICC) | 100 nA typical - reduces standby power in battery-operated sensors and IoT edge nodes. |
| Operating Temperature | –40°C to +125°C - qualified for under-hood automotive, industrial motor control, and outdoor infrastructure applications. |
| Input Leakage Current | ±100 nA max - minimizes loading on high-impedance sensor outputs and RC timing networks. |
Pinout & Package
TSSOP-14 package (5.00 mm × 4.40 mm body size), 1.0-mm maximum height, lead-free NiPdAu finish, moisture sensitivity level 1 (260°C reflow).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1A, 1B, 2A, 2B, 3A, 3B, 4A, 4B | Input | Eight Schmitt-trigger inputs - each pair (e.g., 1A/1B) feeds one XNOR gate; tolerant of slow edges and noise. |
| 1Y, 2Y, 3Y, 4Y | Output | Four CMOS push-pull outputs - source/sink symmetric current; compatible with 3.3 V/5 V logic families. |
| VCC | Power Supply | Single positive supply pin - requires local 0.1-µF bypass capacitor to suppress switching noise. |
| GND | Ground Reference | Common return path for all channels - must be low-impedance to maintain noise immunity and output integrity. |
Key Features
| Feature | Design Value |
|---|---|
| Schmitt-trigger input hysteresis | ΔVT = 0.6–1.6 V - eliminates chatter on noisy clock or sensor signals without external RC filtering. |
| Ultra-low quiescent current | ICC = 100 nA typical - extends battery life in always-on monitoring circuits by >10× vs. standard logic. |
| High-output drive strength | ±7.8 mA at 6 V - directly drives LEDs, small relays, or multiple downstream logic inputs without buffers. |
| Wide temperature operation | –40°C to +125°C - supports deployment in engine control units, solar inverters, and factory automation PLCs. |
| ESD robustness | ±4000-V HBM - withstands handling and board-level ESD events without latch-up or parameter shift. |
Applications
| Phase Difference Detection | Slow-Signal Logic Interface |
|---|---|
Use Scenario: Comparing reference and feedback clock edges in PLL-based power converters or motor encoders. IC Role / Device Role / Timing Role: XNOR gate outputs LOW when clocks differ - fed to low-pass filter to generate analog error voltage proportional to phase offset. Use Value: Eliminates need for external comparators or ADCs; Schmitt inputs tolerate jittery encoder waveforms without false triggering. |
Use Scenario: Interfacing thermistor-based voltage dividers or potentiometer wipers with microcontroller GPIOs. IC Role / Device Role / Timing Role: Converts slow-moving analog thresholds into clean digital transitions for interrupt-driven sampling. Use Value: ΔVT ≥ 0.6 V prevents oscillation during analog signal settling; no external hysteresis resistors required. |
| Noise-Immune Sensor Signal Conditioning | Configurable Inverter/Buffer |
Use Scenario: Cleaning up switch bounce or EMI-contaminated signals from limit switches, door sensors, or industrial proximity detectors. IC Role / Device Role / Timing Role: Acts as debouncing logic element - XNOR configured as inverter (tie one input HIGH) or buffer (tie one input LOW). Use Value: Input hysteresis rejects transients <1.6 V; ICC < 1 µA avoids loading weak sensor sources. |
Use Scenario: Providing polarity-selectable signal inversion in test equipment or configurable I/O modules. IC Role / Device Role / Timing Role: One gate per channel - configure as inverter (1A=HIGH, 1B=input) or non-inverting buffer (1A=LOW, 1B=input). Use Value: Single IC replaces discrete inverters/buffers; identical propagation delay (5–16 ns) ensures matched timing across channels. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar XNOR gate applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74HCS00PWR | Quad 2-input NAND with Schmitt inputs; same VCC range, ICC, and package - but Boolean function differs (Y = A·B). | Requires external inversion to emulate XNOR; adds propagation delay and component count. | Choose only if NAND logic already dominates system design and XNOR can be synthesized with minimal gate overhead. |
| CD4077BM96 | CMOS quad XNOR without Schmitt inputs; wider VCC (3–18 V) but higher ICC (1 µA typical) and no hysteresis. | Unsuitable for slow/noisy inputs - requires external RC filtering or comparator stages. | Select when cost is primary constraint and input signals are clean, fast-rising, and rail-to-rail. |
Compared with SN74HCS7266PWR, SN74HCS00PWR demands additional logic to achieve XNOR functionality and increases timing uncertainty, while CD4077BM96 lacks intrinsic noise immunity - making SN74HCS7266PWR the only option that delivers true plug-in phase-comparison capability with zero external components.
Availability
SN74HCS7266PWR is available at Aetrix Electronics and suitable for industrial motor control, automotive sensor interfaces, and battery-powered IoT edge nodes requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for SN74HCS7266PWR 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 company specializing in analog and embedded processing technologies, with over 50 years of leadership in logic IC innovation and automotive-grade qualification.
The SN74HCS7266PWR belongs to TI's HCS family of high-speed CMOS logic devices designed specifically for noise-prone industrial and automotive environments where signal integrity and low-power reliability are critical.
FAQ
What is the minimum supply voltage required for reliable operation of the SN74HCS7266PWR?
The SN74HCS7266PWR operates reliably from 2 V to 6 V, with guaranteed functionality at 2 V nominal supply. At this voltage, propagation delay increases to 40 ns (max), hysteresis narrows to 0.2–1.0 V, and output drive drops to ±2 mA - sufficient for high-impedance CMOS loads but not for driving LEDs or transmission lines. For full specification compliance, 4.5 V is recommended.
Can unused inputs on the SN74HCS7266PWR be left floating?
No - unused inputs on the SN74HCS7266PWR must be terminated to either VCC or GND to prevent undefined logic states and excessive current draw. The datasheet specifies that unconnected inputs may float into the linear region of the Schmitt-trigger input stage, increasing ICC and causing unpredictable output behavior. A 10-kΩ pull-up or pull-down resistor is recommended for flexible configuration.
Does the SN74HCS7266PWR support 3.3 V logic systems?
Yes - the SN74HCS7266PWR is fully compatible with 3.3 V logic systems. At VCC = 3.3 V, it delivers VOH ≥ 3.2 V and VOL ≤ 0.1 V under 6 mA load, meets tpd ≤ 17 ns, and maintains ΔVT = 0.4–1.4 V. Its wide 2–6 V range eliminates need for level shifters when interfacing with mixed-voltage microcontrollers or FPGAs.
How does the Schmitt-trigger input architecture improve noise immunity in the SN74HCS7266PWR?
The SN74HCS7266PWR's Schmitt-trigger inputs provide hysteresis (ΔVT) of 0.6–1.6 V, meaning the threshold for detecting a HIGH (VT+) is significantly higher than for detecting a LOW (VT−). This prevents multiple transitions when input signals cross the threshold slowly or contain noise spikes smaller than ΔVT - a critical advantage over standard CMOS inputs in electrically noisy environments like motor drives or industrial sensors.
What is the maximum capacitive load the SN74HCS7266PWR can drive while maintaining specified timing?
The SN74HCS7266PWR is characterized for CL = 50 pF, with tpd and tt values guaranteed under that condition. While it can drive up to 70 pF without violating absolute maximum ratings, timing parameters degrade beyond 50 pF - tpd increases by ~2 ns per 10 pF above 50 pF. For designs requiring tight skew control or sub-10 ns resolution, keep total load capacitance ≤50 pF using short traces and minimal stubs.
SN74HCS7266PWR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74HCS
- Package/Case:
- 14-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Logic Type:
- XNOR (Exclusive NOR)
- Number of Circuits:
- 4
- Number of Inputs:
- 2
- Features:
- Schmitt Trigger Input
- Voltage - Supply:
- 2V ~ 6V
- Current - Quiescent (Max):
- 2 µA
- Current - Output High, Low:
- 7.8mA, 7.8mA
- Input Logic Level - Low:
- 1V ~ 3V
- Input Logic Level - High:
- 1.5V ~ 4.2V
- Max Propagation Delay @ V, Max CL:
- 16ns @ 6V, 50pF
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-TSSOP
SN74HCS7266PWR FAQ
1.How can I place an order for SN74HCS7266PWR through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74HCS7266PWR 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 SN74HCS7266PWR reliable?
The price and inventory of SN74HCS7266PWR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74HCS7266PWR is usually 5 days.
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4.How is shipping managed for SN74HCS7266PWR?
SN74HCS7266PWR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN74HCS7266PWR 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 SN74HCS7266PWR?
For technical support, including SN74HCS7266PWR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74HCS7266PWR requirements.
6.How does Aetrix verify that SN74HCS7266PWR is sourced from the original manufacturer or authorized distributors?
All SN74HCS7266PWR 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 SN74HCS7266PWR meets industry standards.
7.What is the process for return or replacement of SN74HCS7266PWR?
All SN74HCS7266PWR units undergo pre-shipment inspection (PSI). If there is an issue with SN74HCS7266PWR, 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 SN74HCS7266PWR part is unused and in its original packaging.
Return procedure for SN74HCS7266PWR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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