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Texas Instruments TL712CPWR
- Part No.:
- TL712CPWR
- Manufacturer:
- Texas Instruments
- Category:
- Comparators
- Package:
- 8-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
TL712CPWR.pdf
- Description:
- IC COMPARATOR 1 DIFF 8TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,178
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Product details
Overview
TL712CPWR 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 TL712CPWR datasheet, TL712CPWR pinout, TL712CPWR application, or TL712CPWR equivalent, key selection criteria include input common-mode range (0 V to 5.5 V), enable-controlled 3-state output behavior, self-biased input architecture, thermal performance in TSSOP-8 (θJA = 149°C/W), and compatibility with TTL load conditions.
Technical Context
The TL712CPWR implements a self-biased differential input stage with 4 kΩ nominal differential input resistance and symmetrical switching characteristics. Its complementary outputs (OUT+ and OUT−) drive TTL loads with VOH ≥ 2.7 V at −1 mA and VOL ≤ 0.5 V at 16 mA.
Enable logic is active-low: OE low places both outputs in high-impedance state. The device features 5 mV typical hysteresis to suppress noise-induced oscillation and supports common-mode input voltages up to 5.5 V with ±25 V absolute maximum differential input rating.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 4.75 V to 5.25 V - ensures stable operation within standard TTL/CMOS 5-V rail tolerances. |
| Propagation Delay | 25 ns typ - enables high-speed decision-making in disk read channels and real-time signal discrimination. |
| Hysteresis | 5 mV typ - provides noise immunity for reliable threshold detection in noisy analog environments. |
| Common-Mode Input Range | 0 V to 5.5 V - allows direct interfacing with 5-V logic and analog sources without level-shifting. |
| Output Type | Complementary 3-state TTL-compatible - supports bus-sharing and multi-drop configurations via OE control. |
| Input Resistance | 4 kΩ differential - defines loading on preceding stages and influences gain accuracy in feedback configurations. |
| Supply Current | 17–20 mA - determines power budget impact in high-density comparator arrays or battery-sensitive designs. |
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 identifier in top-left corner per JEDEC MO-153 AA.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (NC) | No internal connection | Unused pad; must remain unconnected to avoid parasitic coupling or mechanical stress. |
| 2 (IN−) | Inverting input | Differential input node referenced to IN+; sets threshold polarity and hysteresis direction. |
| 3 (IN+) | Non-inverting input | Primary analog input; self-biased internally to establish reference point near mid-supply. |
| 4 (OE) | Output enable (active-low) | Controls 3-state output drivers; OE = low disables both outputs to high-Z for bus arbitration. |
| 5 (VCC) | Positive supply | Single 5-V power rail; powers internal biasing, output drivers, and input stage. |
| 6 (OUT−) | Inverted TTL output | Active-low complement of OUT+; enables differential signaling or wired-OR logic implementation. |
| 7 (OUT+) | Non-inverted TTL output | Standard TTL-compatible output; sinks 16 mA or sources −1 mA under load. |
| 8 (GND) | Ground reference | Return path for supply current and output sink current; requires low-impedance PCB plane. |
Key Features
| Feature | Design Value |
|---|---|
| Self-biased inputs | Eliminates need for external bias resistors, reducing BOM count and layout area in compact read-channel designs. |
| Complementary 3-state outputs | Enables shared-bus architectures without external logic gates or isolation components. |
| 5-mV hysteresis | Prevents chatter during slow-rising or noisy input transitions, critical for reliable data slicing in magnetic storage. |
| 25-ns response time | Supports >20-MHz decision rates in high-speed serial data recovery paths. |
| 0-V to 5.5-V common-mode range | Accepts inputs directly from DACs, sensors, or legacy 5-V logic without attenuation or clamping diodes. |
Applications
| Disk Memory Read Channel | High-Speed Data Slicer |
|---|---|
Use Scenario: Detecting magnetic flux transitions from rotating disk platters in floppy or early hard drives. IC Role / Device Role / Timing Role: Comparator performing analog-to-digital conversion of read-head signals into clean TTL-level NRZ data streams. Use Value: 25 ns propagation delay and 5 mV hysteresis ensure accurate bit-edge timing and noise rejection in low-SNR analog front-ends. | Use Scenario: Converting analog eye-diagram signals into binary logic levels in communication receivers. IC Role / Device Role / Timing Role: High-speed threshold detector establishing decision boundaries for sampled waveform data. Use Value: Complementary outputs simplify differential sampling architectures; self-biasing reduces component count in compact receiver modules. |
| Bus Arbitration Interface | Analog Threshold Monitor |
Use Scenario: Managing shared data buses among multiple microcontrollers or peripherals in embedded systems. IC Role / Device Role / Timing Role: Enabling/disabling signal drivers via OE control to prevent bus contention during multi-master operations. Use Value: Active-low OE with TTL-compatible thresholds allows direct connection to standard logic control lines without level translation. | Use Scenario: Monitoring voltage rails or sensor outputs for over/under-voltage conditions in industrial controllers. IC Role / Device Role / Timing Role: Precision window or level detector triggering fault responses or status flags. Use Value: 0–5.5 V common-mode range accepts direct connection to 5-V supplies or op-amp outputs; hysteresis prevents false trips near threshold. |
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), higher input offset (±7.5 mV). | Requires external hysteresis resistor network and pull-up; better suited for wide-supply industrial monitoring than TTL-bus interfacing. | Select when adjustable hysteresis or dual-supply operation is required; not drop-in for TL712CPWR's 3-state TTL outputs. |
| TL3016CDR | Higher speed (4.5 ns), rail-to-rail inputs, no 3-state outputs, lower supply current (3.5 mA), different pinout. | Optimized for ultra-fast ADC front-ends or laser diode drivers; lacks OE control for bus sharing. | Choose for sub-5 ns response where bus arbitration is unnecessary; requires PCB redesign due to non-compatible pin mapping. |
Compared with LM311DR and TL3016CDR, the TL712CPWR uniquely combines 3-state TTL outputs, self-biasing, and 5-mV hysteresis in a TSSOP-8 package-making it optimal for space-constrained, bus-shared disk read-chain implementations requiring minimal external components.
Availability
TL712CPWR is available at Aetrix Electronics and suitable for disk memory read channels, high-speed data slicers, bus arbitration interfaces, and analog threshold monitors requiring stable component supply across industrial and legacy storage design cycles.
Supply support for TL712CPWR 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 technologies with broad industrial, automotive, and communications product portfolios.
The TL712CPWR belongs to TI's legacy high-speed comparator family designed specifically for reliable, low-component-count signal conditioning in magnetic storage and digital interface applications.
FAQ
What is the operating temperature range for the TL712CPWR?
The TL712CPWR is rated for operation from 0°C to 70°C ambient temperature, matching the commercial-grade specification defined in its recommended operating conditions. This range supports use in office equipment, consumer storage devices, and industrial control panels where environmental extremes are limited. The device's thermal performance in the TSSOP-8 package (θJA = 149°C/W) must be considered in board-level thermal design to maintain junction temperature below 150°C under full load. TL712CPWR reliability is validated within this temperature envelope per TI's qualification standards.
Does the TL712CPWR require external biasing resistors on its inputs?
No, the TL712CPWR features self-biased inputs, eliminating the need for external bias resistors. Its internal circuitry establishes appropriate DC operating points for the differential input stage, allowing direct connection of analog signals across the full 0-V to 5.5-V common-mode range. This simplifies schematic design and reduces PCB footprint-particularly valuable in dense read-channel layouts. TL712CPWR's self-bias architecture is intrinsic to its bipolar Schottky process and is confirmed in the functional description and schematics of the SLCS002D datasheet.
What is the function of the NC pin (Pin 1) on the TL712CPWR?
Pin 1 of the TL712CPWR is designated NC (No internal connection), meaning it has no electrical connection to the die. It must remain unconnected on the PCB to prevent unintended coupling, mechanical stress on the leadframe, or solder wicking that could compromise adjacent pins. TI's package outline drawing PW0008A confirms Pin 1 as non-functional, and the datasheet explicitly states "NC-No internal connection." Leaving TL712CPWR Pin 1 floating is mandatory; grounding or routing it risks assembly defects or long-term reliability issues.
Can the TL712CPWR drive standard TTL loads directly?
Yes, the TL712CPWR provides complementary TTL-compatible outputs capable of directly driving standard TTL loads. Its OUT+ and OUT− pins deliver VOH ≥ 2.7 V at −1 mA and VOL ≤ 0.5 V at 16 mA under VCC = 5 V, meeting TTL voltage thresholds. The device's 100 Ω typical output resistance and symmetrical switching ensure clean edge integrity. TL712CPWR's output stage is explicitly characterized for "TTL load" conditions in the switching characteristics table, confirming interoperability without external buffers or level shifters.
Is the TL712CPWR pin-compatible with other variants like TL712CD or TL712CP?
No, the TL712CPWR is not pin-compatible with TL712CD (SOIC-8) or TL712CP (PDIP-8), despite identical functionality and pin numbering. While all share the same 8-pin functional assignment (IN−, IN+, OE, VCC, OUT−, OUT+, GND), the TSSOP-8 (PW) package has 0.65 mm lead pitch and 3.0 mm × 4.4 mm body dimensions-distinct from SOIC-8 (1.27 mm pitch, 3.9 mm × 4.9 mm) and PDIP-8 (2.54 mm pitch, 9.27 mm × 6.35 mm). TL712CPWR requires dedicated PCB layout; swapping packages mandates board revision. This mechanical incompatibility is documented in TI's package drawings D0008A (SOIC), N0008F (PDIP), and PW0008A (TSSOP).
TL712CPWR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 8-TSSOP (0.173", 4.40mm Width)
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- 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
TL712CPWR FAQ
1.How can I place an order for TL712CPWR through Aetrix?
Please submit a Request for Quotation (RFQ) for TL712CPWR 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 TL712CPWR reliable?
The price and inventory of TL712CPWR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TL712CPWR is usually 5 days.
3.What payment methods are accepted for TL712CPWR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TL712CPWR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TL712CPWR?
TL712CPWR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TL712CPWR 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 TL712CPWR?
For technical support, including TL712CPWR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TL712CPWR requirements.
6.How does Aetrix verify that TL712CPWR is sourced from the original manufacturer or authorized distributors?
All TL712CPWR 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 TL712CPWR meets industry standards.
7.What is the process for return or replacement of TL712CPWR?
All TL712CPWR units undergo pre-shipment inspection (PSI). If there is an issue with TL712CPWR, 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 TL712CPWR part is unused and in its original packaging.
Return procedure for TL712CPWR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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