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Texas Instruments TL712CPSRG4
- Part No.:
- TL712CPSRG4
- Manufacturer:
- Texas Instruments
- Category:
- Comparators
- Package:
- 8-SOIC (0.209", 5.30mm Width)
- Datasheet:
-
TL712CPSRG4.pdf
- Description:
- IC COMPARATOR 1 DIFF 8SO
- Quantity:
- Payment:
- Shipping:
Inventory:3,878
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Product details
Overview
TL712CPSRG4 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 TL712CPSRG4 datasheet, TL712CPSRG4 pinout, TL712CPSRG4 application, or TL712CPSRG4 equivalent, this page delivers verified technical context, package-specific pin mapping, real-world use scenarios, and validated alternative options for timing-critical comparator selection.
Technical Context
The TL712CPSRG4 implements self-biased differential input stages with 4 kΩ nominal differential input resistance and symmetrical switching characteristics. Its enable (OE) input controls complementary 3-state outputs, placing both OUT+ and OUT− into high-impedance when OE is low.
It supports 0-V to 5.5-V common-mode input voltage range and features TTL-compatible output drive capability: VOL = 0.4 V at 16 mA sink, VOH = 2.7 V at −1 mA source. Supply current is 17–20 mA at VCC = 5 V and TA = 25°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Hysteresis | 5 mV typical - provides noise immunity against small input fluctuations near threshold |
| Propagation Delay | 25 ns typical (tPLH/tPHL) - enables high-speed decision-making in read-channel circuits |
| Common-Mode Range | 0 V to 5.5 V - allows direct interfacing with 5-V logic and analog signal sources |
| Output Type | Complementary 3-state TTL-compatible - supports bus-sharing and multi-drop configurations |
| Supply Voltage | 4.75 V to 5.25 V - tightly regulated 5-V rail requirement ensures stable comparator threshold behavior |
| Input Resistance | 4 kΩ differential - defines loading on preceding stage and affects signal integrity in high-speed chains |
Pinout & Package
TL712CPSRG4 is packaged in an 8-pin SOP (PS) surface-mount package per JEDEC MS-012 variation AA, with 1.27 mm pitch, 5.3 mm × 6.2 mm body, and 1.75 mm max height. Pin 1 identifier is located in quadrant Q1 of the tape reel.
| 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 signals |
| 3 (IN+) | Non-inverting analog input | Primary signal input; threshold crossing triggers output state change |
| 4 (OE) | Output enable control | Active-low TTL-compatible enable; drives both outputs to high-Z when low |
| 5 (VCC) | Positive supply | Single 5-V power rail; decoupling capacitor required within 1 cm of pin |
| 6 (OUT−) | Inverted TTL output | Complementary to OUT+; sinks up to 16 mA or sources −1 mA |
| 7 (OUT+) | Non-inverted TTL output | Asserts high when IN+ > IN− + hysteresis; matches standard TTL logic levels |
| 8 (GND) | Ground reference | Return path for supply and output currents; requires low-inductance connection to plane |
Key Features
| Feature | Design Value |
|---|---|
| Self-biased inputs | Eliminates external biasing components - reduces BOM count and layout area in read-channel designs |
| Complementary 3-state outputs | Enables shared-bus architectures without external logic - simplifies multi-comparator arbitration |
| 5 mV hysteresis | Prevents oscillation on slow-rising or noisy inputs - critical for reliable disk read signal slicing |
| 25 ns response time | Supports >30 MB/s data rates in magnetic storage interfaces - meets legacy IDE/ATA timing budgets |
| Single 5-V operation | Direct compatibility with TTL/LSI logic families - avoids level-shifting circuitry in legacy systems |
Applications
| Disk Memory Read Channel | High-Speed Data Slicer |
|---|---|
|
Use Scenario: Detecting magnetic flux transitions in floppy or early hard disk drive read heads. IC Role / Device Role / Timing Role: Analog comparator converting differential head signal into clean digital NRZ data stream. Use Value: 25 ns propagation delay ensures accurate sampling of 20–40 MHz read channel waveforms without jitter-induced bit errors. |
Use Scenario: Converting analog waveform edges into precise digital timing pulses in test equipment. IC Role / Device Role / Timing Role: Threshold detector generating synchronized clock/data strobes from analog trigger sources. Use Value: 5 mV hysteresis rejects sub-mV noise while maintaining <1 ns timing uncertainty across temperature. |
| Legacy Bus Arbitration | TTL-Level Signal Conditioning |
|
Use Scenario: Resolving priority conflicts among multiple DMA controllers on ISA or VME backplanes. IC Role / Device Role / Timing Role: Fast decision element enabling deterministic bus grant sequencing. Use Value: Complementary 3-state outputs allow wired-OR arbitration without external pull-ups or logic gates. |
Use Scenario: Cleaning up degraded TTL signals in long-trace industrial control backplanes. IC Role / Device Role / Timing Role: Input signal regenerator restoring logic margins before FPGA or microcontroller inputs. Use Value: 0–5.5 V common-mode range accepts attenuated or offset signals without level-shifting circuitry. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-speed comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TL712CDR | Same die, SOIC-8 package (D), 2500-reel packaging; no G4 suffix - RoHS-compliant but lacks TI's green marking standard | Identical electrical performance; differs only in package outline (SOIC vs SOP) and thermal impedance (97°C/W vs 95°C/W) | Select TL712CDR for board designs already using SOIC footprints or requiring TI's standard D-package qualification data |
| LM311DR | Open-collector output, no 3-state capability; 115 ns typical response; wider supply range (5–36 V); no integrated hysteresis | Suitable for general-purpose level detection but not for bus-shared or ultra-fast read-channel use | Choose LM311DR only when open-collector flexibility or wide-supply operation outweighs speed and output architecture requirements |
Compared with TL712CPSRG4, TL712CDR offers identical comparator core performance in a different footprint ideal for SOIC-based layouts, while LM311DR trades speed and 3-state capability for broader supply tolerance and open-collector versatility - making TL712CPSRG4 the optimal choice for legacy 5-V, high-speed, bus-shared applications.
Availability
TL712CPSRG4 is available at Aetrix Electronics and suitable for disk memory read channels, high-speed data slicers, legacy bus arbitration circuits, and TTL-level signal conditioning applications requiring stable component supply and long-term industrial availability.
Supply support for TL712CPSRG4 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 founded in 1930, specializing in analog, embedded processing, and logic solutions with broad industrial, automotive, and communications reach.
The TL712CPSRG4 belongs to TI's legacy bipolar comparator product line, engineered specifically for high-speed, 5-V TTL-compatible signal decision-making in disk drive, instrumentation, and industrial control systems.
FAQ
What is the operating temperature range for TL712CPSRG4?
The TL712CPSRG4 is specified for operation from 0°C to 70°C ambient temperature. This commercial-grade range aligns with its intended use in disk memory read chains and industrial control boards where environmental conditions are controlled. The device's junction temperature must not exceed 150°C under any operating condition, and thermal design should account for its 95°C/W θJA in the SOP (PS) package.
Does TL712CPSRG4 require external hysteresis components?
No, TL712CPSRG4 integrates 5 mV typical hysteresis internally via its self-biased input structure. This eliminates the need for external positive feedback resistors, reducing component count and PCB area in applications like disk read-channel signal slicing where noise immunity is critical without sacrificing speed.
What does the "G4" suffix indicate in TL712CPSRG4?
The "G4" suffix denotes TI's green-compliant packaging standard: lead-free terminations (NIPDAU finish), RoHS compliance, and adherence to TI's material content and marking specifications. TL712CPSRG4 meets JEDEC Level-1 moisture sensitivity and is qualified for standard 260°C reflow profiles - identical to TL712CPSR but with updated environmental certification.
Can TL712CPSRG4 drive standard TTL loads directly?
Yes, TL712CPSRG4 features complementary TTL-compatible outputs: VOH ≥ 2.7 V at −1 mA and VOL ≤ 0.5 V at 16 mA. It can directly interface with 74LS, 74F, and most 5-V CMOS logic families without level shifters or buffers - a key advantage in legacy system upgrades where signal integrity and timing predictability are essential.
Is there a pin-to-pin replacement for TL712CPSRG4 in SOIC-8?
TL712CDR is a functionally identical part in SOIC-8 (D) package with same electrical specs and 2500-reel packaging. While not pin-to-pin due to differing package outlines (SOP vs SOIC), its pin numbering and signal assignment match TL712CPSRG4 exactly - requiring only footprint revision, not schematic changes, for migration.
TL712CPSRG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 8-SOIC (0.209", 5.30mm Width)
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- 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-SO
TL712CPSRG4 FAQ
1.How can I place an order for TL712CPSRG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for TL712CPSRG4 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 TL712CPSRG4 reliable?
The price and inventory of TL712CPSRG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TL712CPSRG4 is usually 5 days.
3.What payment methods are accepted for TL712CPSRG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TL712CPSRG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TL712CPSRG4?
TL712CPSRG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TL712CPSRG4 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 TL712CPSRG4?
For technical support, including TL712CPSRG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TL712CPSRG4 requirements.
6.How does Aetrix verify that TL712CPSRG4 is sourced from the original manufacturer or authorized distributors?
All TL712CPSRG4 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 TL712CPSRG4 meets industry standards.
7.What is the process for return or replacement of TL712CPSRG4?
All TL712CPSRG4 units undergo pre-shipment inspection (PSI). If there is an issue with TL712CPSRG4, 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 TL712CPSRG4 part is unused and in its original packaging.
Return procedure for TL712CPSRG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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