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Texas Instruments TL712CPS
- Part No.:
- TL712CPS
- Manufacturer:
- Texas Instruments
- Category:
- Comparators
- Package:
- -
- Datasheet:
-
TL712CPS.pdf
- Description:
- SINGLE COMPARATOR
- Quantity:
- Payment:
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Inventory:17,057
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Product details
Overview
TL712CPS from Texas Instruments is a high-speed bipolar Schottky comparator with differential analog inputs, complementary 3-state TTL-compatible outputs, 5-mV typical hysteresis, 25-ns typical propagation delay, and operation from a single 5-V supply. It serves as a disk memory read-chain data comparator in digital storage systems.
For engineers reviewing the TL712CPS datasheet, TL712CPS pinout, TL712CPS application, or TL712CPS equivalent, key selection considerations include its self-biased input architecture, OE-controlled 3-state outputs, 0-V to 5.5-V common-mode input range, and compatibility with TTL load conditions at 5 V.
Technical Context
The TL712CPS implements a fully differential comparator core with symmetrical switching characteristics and internal hysteresis of 5 mV. Its self-biased inputs eliminate external biasing components, and the output enable (OE) pin controls simultaneous high-impedance state on both OUT+ and OUT− terminals.
It uses bipolar Schottky process technology for high-speed response, supports TTL-compatible logic levels (VOH ≥ 2.7 V, VOL ≤ 0.5 V), and maintains stable operation across 0°C to 70°C ambient temperature with supply voltage regulated between 4.75 V and 5.25 V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Hysteresis | 5 mV typical - provides noise immunity against small input fluctuations during threshold crossing |
| Propagation delay | 25 ns typical (tPLH/tPHL) - enables high-speed decision-making in read-channel timing paths |
| Common-mode input range | 0 V to 5.5 V - allows direct interfacing with unbuffered digital logic and analog sensor outputs |
| Supply voltage | 4.75 V to 5.25 V - ensures compatibility with standard 5-V TTL/CMOS power domains |
| Output type | Complementary 3-state TTL - supports wired-OR bus architectures and shared data lines |
| Input resistance | 4 kΩ differential - defines loading impact on preceding signal sources in high-speed chains |
Pinout & Package
SOP (PS) package: 8-pin surface-mount, 1.20 mm max height, 3.90 mm × 4.90 mm body, JEDEC MO-153 compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (NC) | No internal connection | Unused pad - must remain unconnected per TI mechanical specification |
| 2 (IN−) | Inverting analog input | Differential input node referenced to IN+; accepts 0–5.5 V common-mode signals |
| 3 (IN+) | Non-inverting analog input | Differential input node; threshold comparison occurs when IN+ exceeds IN− by >2.5 mV |
| 4 (OE) | Output enable control | Active-low TTL input; drives both outputs to high-Z when low |
| 5 (VCC) | Positive supply | Single 5-V rail connection; powers internal Schottky circuitry and output drivers |
| 6 (OUT−) | Inverted TTL output | Complements OUT+; sinks up to 16 mA or sources −1 mA under load |
| 7 (OUT+) | Non-inverted TTL output | Active-high when IN+ > IN− + hysteresis; matches standard TTL voltage thresholds |
| 8 (GND) | Signal ground reference | Return path for supply current and input/output signal references |
Key Features
| Feature | Design Value |
|---|---|
| Self-biased inputs | Eliminates need for external resistor dividers or bias networks in threshold detection circuits |
| Complementary 3-state outputs | Enables multi-comparator arbitration on shared buses without external logic or isolation |
| Single 5-V supply operation | Reduces system power architecture complexity versus dual-supply comparators |
| 25-ns propagation delay | Supports >30-MHz decision rates in disk read-channel and high-speed data acquisition |
| 0-V to 5.5-V common-mode range | Accepts inputs directly from DACs, sensors, or logic outputs without level-shifting |
Applications
| Disk Memory Read Channel | Data Acquisition Threshold Detection |
|---|---|
Use Scenario: Detecting magnetic flux transitions in floppy/hard disk drive read heads during data recovery. IC Role / Device Role / Timing Role: High-speed analog comparator converting differential head signals into clean TTL-level data pulses. Use Value: 25-ns response and 5-mV hysteresis ensure reliable edge detection amid read-head noise and jitter. | Use Scenario: Converting analog sensor outputs (e.g., temperature, pressure) into digital event triggers. IC Role / Device Role / Timing Role: Precision threshold detector with self-biased inputs eliminating calibration drift. Use Value: 0–5.5 V common-mode range accepts raw sensor outputs; 3-state outputs allow multiplexed monitoring. |
| Bus Arbitration Logic | TTL-Compatible Signal Conditioning |
Use Scenario: Resolving priority among multiple digital subsystems sharing a common data bus. IC Role / Device Role / Timing Role: Comparator-based priority encoder enabling fast, deterministic bus grant decisions. Use Value: Complementary 3-state outputs permit wired-OR arbitration without additional logic gates. | Use Scenario: Cleaning up marginal or slow-rising digital signals before clock domain crossing. IC Role / Device Role / Timing Role: Schmitt-trigger-like signal regenerator with precise TTL-compatible thresholds. Use Value: Self-biasing and hysteresis suppress noise-induced false triggering on noisy control lines. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-speed comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM311DR | Open-collector output, no 3-state capability; requires external pull-up; 115-ns typical delay | Lacks OE control and complementary outputs - unsuitable for bus arbitration or shared-line use | Select when only single-ended output and lower cost are required; not drop-in for TL712CPS bus interfaces |
| TL3016CDR | Higher speed (4.5 ns), rail-to-rail input, but no 3-state outputs and different pinout | Designed for ultra-fast sampling, not legacy TTL bus environments requiring 3-state control | Choose for sub-10-ns timing-critical designs where OE functionality is unnecessary |
Compared with LM311DR and TL3016CDR, the TL712CPS uniquely combines 25-ns speed, complementary 3-state TTL outputs, and self-biased inputs - making it optimal for disk read channels and multi-comparator bus arbitration where OE-controlled output isolation is essential.
Availability
TL712CPS is available at Aetrix Electronics and suitable for disk memory read channels, data acquisition threshold detection, and bus arbitration logic requiring stable component supply and long-term industrial availability.
Supply support for TL712CPS 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 headquartered in Dallas, Texas, delivering analog, embedded processing, and logic solutions for industrial, automotive, and communications markets.
The TL712 family was designed specifically for high-reliability, high-speed analog-to-digital decision-making in legacy storage and instrumentation systems operating from 5-V supplies.
FAQ
What is the function of the NC pin on the TL712CPS?
The NC (No Connection) pin on the TL712CPS is physically present but has no internal connection to the die. Per Texas Instruments' mechanical drawing MTSS001C, this pin must remain unconnected in PCB layout and should not be tied to any net, including ground or VCC, to avoid mechanical stress or unintended coupling.
Does the TL712CPS require external biasing resistors on its inputs?
No, the TL712CPS features self-biased inputs, meaning its internal circuitry establishes the proper DC operating point without external resistors. This eliminates calibration drift and simplifies design in applications like disk read channels where input signal levels vary across temperature and process corners.
What is the maximum common-mode input voltage range supported by the TL712CPS?
The TL712CPS supports a common-mode input voltage range of 0 V to 5.5 V, as specified in the recommended operating conditions. This allows direct interface with 5-V logic families and analog sources without level-shifting, provided the differential input voltage stays within ±25 V absolute maximum rating.
Can the TL712CPS operate from a supply voltage other than 5 V?
The TL712CPS is characterized for operation from 4.75 V to 5.25 V, with typical performance (e.g., 25-ns delay, 5-mV hysteresis) guaranteed at 5 V. Operation outside this range may degrade timing, output swing, or noise immunity, and is not supported per the datasheet's recommended operating conditions.
How does the output enable (OE) pin affect the TL712CPS outputs?
When the OE pin of the TL712CPS is driven low (≤0.4 V), both OUT+ and OUT− enter a high-impedance state, effectively disconnecting them from the load. When OE is high (≥2.7 V), the outputs resume normal complementary TTL operation - a feature critical for bus-sharing and multi-comparator arbitration schemes.
TL712CPS Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- -
- Series:
- *
- Packaging:
- Bulk
- Product Status:
- Active
- Type:
- -
- Number of Elements:
- -
- Output Type:
- -
- Voltage - Supply, Single/Dual (±):
- -
- :
- -
- Voltage - Input Offset (Max):
- -
- Current - Input Bias (Max):
- -
- Current - Output (Typ):
- -
- Current - Quiescent (Max):
- -
- CMRR, PSRR (Typ):
- -
- Propagation Delay (Max):
- -
- Hysteresis:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- :
- -
TL712CPS FAQ
1.How can I place an order for TL712CPS through Aetrix?
Please submit a Request for Quotation (RFQ) for TL712CPS 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 TL712CPS reliable?
The price and inventory of TL712CPS are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TL712CPS is usually 5 days.
3.What payment methods are accepted for TL712CPS?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TL712CPS transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TL712CPS?
TL712CPS orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TL712CPS 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 TL712CPS?
For technical support, including TL712CPS datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TL712CPS requirements.
6.How does Aetrix verify that TL712CPS is sourced from the original manufacturer or authorized distributors?
All TL712CPS 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 TL712CPS meets industry standards.
7.What is the process for return or replacement of TL712CPS?
All TL712CPS units undergo pre-shipment inspection (PSI). If there is an issue with TL712CPS, 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 TL712CPS part is unused and in its original packaging.
Return procedure for TL712CPS:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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