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Texas Instruments TL712CPW
- Part No.:
- TL712CPW
- Manufacturer:
- Texas Instruments
- Category:
- Comparators
- Package:
- 8-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
TL712CPW.pdf
- Description:
- IC COMPARATOR 1 DIFF 8TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,727
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Product details
Overview
TL712CPW 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 TL712CPW datasheet, TL712CPW pinout, TL712CPW application, or TL712CPW equivalent, key selection criteria include single-supply 5-V operation, 0–5.5 V common-mode input range, self-biased inputs, enable-controlled 3-state outputs, and TSSOP-8 packaging for space-constrained PCB layouts.
Technical Context
The TL712CPW implements a differential comparator core with symmetrical switching characteristics and internal hysteresis of 5 mV to suppress noise-induced output oscillation. Its inputs are self-biased, eliminating external biasing components, and its complementary outputs (OUT+ and OUT−) drive TTL loads directly.
Enable logic (OE) controls output state: when OE is low, both outputs enter high-impedance mode; when OE is high, outputs respond to input differential voltage. The device draws 17–20 mA supply current at 5 V and supports ±25 V absolute maximum differential input voltage.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 4.75–5.25 V - ensures stable operation within standard TTL/CMOS logic rail tolerances. |
| Propagation Delay | 25 ns typ - enables high-speed decision-making in disk read channels and real-time signal conditioning. |
| Hysteresis | 5 mV typ - provides noise immunity without requiring external feedback components. |
| Common-Mode Input Range | 0–5.5 V - accommodates full-rail input signals without clamping or level-shifting circuitry. |
| Output Type | Complementary 3-state TTL - allows bus sharing and direct interface with legacy TTL logic families. |
| Enable Function | Active-high OE pin - permits synchronized output gating in multi-comparator systems or power-gated subsystems. |
| Input Resistance | 4 kΩ differential - defines loading on preceding analog stages and impacts signal integrity in high-impedance sources. |
Pinout & Package
TSSOP-8 package (PW), 3.0 mm × 4.4 mm body, 1.2 mm max height, 0.65 mm lead pitch, pin 1 marked by corner chamfer or dot; RoHS-compliant NIPDAU finish, MSL Level-1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (NC) | No internal connection | Unused pad - must remain unconnected; no routing or thermal tie required. |
| 2 (IN−) | Inverting analog input | Differential input node referenced to IN+; accepts 0–5.5 V common-mode voltage. |
| 3 (IN+) | Non-inverting analog input | Differential input node; threshold crossing at VT+ and VT− defines hysteresis window. |
| 4 (OE) | Output enable control | Active-high logic input; drives outputs to high-Z when low, enabling time-multiplexed bus use. |
| 5 (VCC) | Positive supply | Single 5-V power rail; decoupling capacitor (0.1 µF) recommended adjacent to pin. |
| 6 (OUT−) | Inverted TTL output | Complementary to OUT+; sinks up to 16 mA, sources −1 mA; 0.4 V low-level under load. |
| 7 (OUT+) | Non-inverted TTL output | Complementary to OUT−; matches OUT− timing and drive strength for balanced signaling. |
| 8 (GND) | Ground reference | Return path for supply and output currents; requires low-impedance PCB plane connection. |
Key Features
| Feature | Design Value |
|---|---|
| Self-biased inputs | Eliminates need for external bias resistors or reference voltages, reducing BOM count and layout area. |
| Complementary 3-state outputs | Enables wired-OR bus architectures and eliminates contention in shared-data-path applications. |
| 5 mV hysteresis | Internally generated noise margin prevents chatter on slow or noisy input transitions without external feedback. |
| 25 ns response time | Supports >30 MHz decision rates in disk read channels and high-speed data acquisition front-ends. |
| Single 5-V supply operation | Direct compatibility with legacy TTL/LSI systems and eliminates dual-rail power design complexity. |
Applications
| Disk Memory Read Channel | High-Speed Data Acquisition |
|---|---|
Use Scenario: Detecting magnetic flux transitions during hard disk drive head readback. IC Role / Device Role / Timing Role: Analog comparator converting differential read-head signal into clean digital data stream. Use Value: 25 ns propagation delay ensures accurate bit sampling at multi-MHz data rates; hysteresis rejects EMI-induced glitches. | Use Scenario: Threshold detection in oscilloscope front-end or logic analyzer sampling circuits. IC Role / Device Role / Timing Role: High-speed comparator capturing fast edge transitions before digitization. Use Value: 0–5.5 V common-mode range accepts signals directly from op-amp buffers; 3-state outputs allow multiplexing across multiple channels. |
| Bus Arbitration Logic | TTL-Level Signal Conditioning |
Use Scenario: Resolving priority among multiple request lines in industrial control backplanes. IC Role / Device Role / Timing Role: Comparator enabling/disabling bus drivers based on voltage-encoded priority levels. Use Value: Complementary outputs drive enable inputs of multiple bus transceivers; OE pin synchronizes arbitration windows. | Use Scenario: Converting analog sensor outputs (e.g., temperature, position) to TTL-compatible logic levels. IC Role / Device Role / Timing Role: Interface comparator translating conditioned analog signals into digital control logic. Use Value: Self-biased inputs accept unipolar signals without external bias network; 5-V supply matches system logic rails. |
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 built-in hysteresis, wider supply range (5–36 V), slower (115 ns typ). | Requires external pull-up and hysteresis resistors; suited for higher-voltage industrial sensing, not TTL bus interfacing. | Choose LM311DR only if open-collector flexibility and wide supply range outweigh need for speed and integrated hysteresis. |
| TLV3501CDR | CMOS process, rail-to-rail inputs, 4.5 ns propagation delay, 3.3-V optimized, no 3-state outputs. | Designed for low-power, high-speed portable systems; lacks OE control and TTL output compatibility. | Choose TLV3501CDR for sub-5 ns timing-critical apps with 3.3-V supplies; avoid where 3-state bus sharing or 5-V TTL drive is required. |
Compared with LM311DR and TLV3501CDR, the TL712CPW uniquely combines TTL-compatible complementary 3-state outputs, 5 mV hysteresis, and 25 ns speed in a single 5-V supply TSSOP-8 package-making it optimal for legacy disk controller and bus arbitration designs where pin-compatible upgrades are impractical.
Availability
TL712CPW is available at Aetrix Electronics and suitable for disk memory controllers, high-speed data acquisition systems, and industrial bus arbitration circuits requiring stable component supply and long-term obsolescence management.
Supply support for TL712CPW 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 connectivity solutions since 1930.
The TL712CPW belongs to TI's legacy high-speed comparator product line, designed specifically for 5-V TTL-system integration in disk drive electronics and industrial control interfaces.
FAQ
What is the operating temperature range for the TL712CPW?
The TL712CPW is rated for operation from 0°C to 70°C ambient temperature. This commercial-grade specification aligns with its intended use in disk memory controllers and non-automotive industrial equipment. Thermal derating is required above 70°C due to its 149°C/W junction-to-ambient thermal resistance in the TSSOP-8 package.
Does the TL712CPW require external hysteresis components?
No, the TL712CPW integrates 5 mV typical hysteresis internally, eliminating the need for external positive-feedback resistors. This feature simplifies layout and improves consistency across production units, especially in disk read-channel applications where noise immunity is critical to bit-error rate performance.
Can the TL712CPW drive standard TTL loads directly?
Yes, the TL712CPW features complementary TTL-compatible outputs capable of sourcing −1 mA and sinking 16 mA, meeting standard TTL voltage and current thresholds. Its VOH ≥ 2.7 V and VOL ≤ 0.5 V at specified loads ensure reliable interfacing with 74LS and 74ALS logic families without level-shifting circuitry.
What is the function of Pin 1 (NC) on the TL712CPW?
Pin 1 of the TL712CPW is a no-connect (NC) terminal with no internal connection. It must remain unconnected on the PCB-neither routed nor tied to ground or supply. This pin exists for mechanical symmetry and package compatibility but carries no electrical function in the TL712CPW.
Is the TL712CPW pin-compatible with other TL712 variants like TL712CD or TL712CP?
Yes, all TL712 variants-including TL712CPW, TL712CD, and TL712CP-share identical 8-pin functional pinouts (IN−, IN+, OE, VCC, OUT−, OUT+, GND, NC). While package dimensions differ (TSSOP vs SOIC vs PDIP), the signal mapping and electrical behavior are fully consistent across variants, enabling drop-in replacement where board layout permits.
TL712CPW Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 8-TSSOP (0.173", 4.40mm Width)
- Series:
- -
- Packaging:
- Tube
- Product Status:
- Obsolete
- Type:
- Differential
- Number of Elements:
- 1
- Output Type:
- Complementary, Push-Pull, Tri-State, TTL
- Voltage - Supply, Single/Dual (±):
- 4.75V ~ 5.25V
- :
- -
- Voltage - Input Offset (Max):
- -
- Current - Input Bias (Max):
- -
- Current - Output (Typ):
- 20mA
- Current - Quiescent (Max):
- -
- CMRR, PSRR (Typ):
- 25ns
- Propagation Delay (Max):
- 5mV
- Hysteresis:
- 0°C ~ 70°C
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- Surface Mount
- :
- 8-TSSOP
TL712CPW FAQ
1.How can I place an order for TL712CPW through Aetrix?
Please submit a Request for Quotation (RFQ) for TL712CPW 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 TL712CPW reliable?
The price and inventory of TL712CPW are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TL712CPW is usually 5 days.
3.What payment methods are accepted for TL712CPW?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TL712CPW transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TL712CPW?
TL712CPW orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TL712CPW 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 TL712CPW?
For technical support, including TL712CPW datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TL712CPW requirements.
6.How does Aetrix verify that TL712CPW is sourced from the original manufacturer or authorized distributors?
All TL712CPW 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 TL712CPW meets industry standards.
7.What is the process for return or replacement of TL712CPW?
All TL712CPW units undergo pre-shipment inspection (PSI). If there is an issue with TL712CPW, 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 TL712CPW part is unused and in its original packaging.
Return procedure for TL712CPW:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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