My Inquiry
My Account
Texas Instruments TL712CD
- Part No.:
- TL712CD
- Manufacturer:
- Texas Instruments
- Category:
- Comparators
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TL712CD.pdf
- Description:
- IC COMPARATOR 1 DIFF 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,220
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
TL712CD 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 TL712CD datasheet, TL712CD pinout, TL712CD application, or TL712CD equivalent, this page delivers verified electrical specs, SOIC-8 package details, enable-controlled 3-state output behavior, common-mode input range (0–5.5 V), and real-world timing performance under TTL load conditions.
Technical Context
The TL712CD implements self-biased differential inputs with 4 kΩ nominal input resistance and symmetrical switching thresholds (±100 mV). Its internal architecture supports TTL-compatible logic levels at both OUT+ and OUT− outputs, with independent enable control via OE pin.
When OE is low, both outputs enter high-impedance state; when OE is high, outputs switch actively with VOL ≤ 0.5 V at 16 mA sink and VOH ≥ 2.7 V at −1 mA source. The device exhibits 97°C/W thermal impedance in SOIC-D package and operates across 0°C to 70°C ambient temperature.
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 data acquisition |
| Hysteresis | 5 mV typ - suppresses noise-induced oscillation near threshold in noisy analog environments |
| Common-Mode Input Range | 0 V to 5.5 V - allows direct interface with 5-V logic without level-shifting circuitry |
| Output Type | Complementary 3-state TTL - supports bus-sharing and multi-comparator wired-OR configurations |
| Enable Function | Active-high OE pin - permits synchronized output gating in time-critical system control paths |
| Input Resistance | 4 kΩ differential - defines loading on preceding analog stage and impacts signal integrity |
Pinout & Package
TL712CD is housed in an 8-pin SOIC (D) package per JEDEC MS-012 variation AA, 3.91 mm body width, 1.75 mm max height, with gull-wing leads and pin 1 identifier in quadrant Q1 on tape-and-reel.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (NC) | No internal connection | Unused pad - must remain unconnected; no routing or grounding required |
| 2 (IN−) | Inverting analog input | Differential reference node; sets threshold relative to IN+ |
| 3 (IN+) | Non-inverting analog input | Main signal input; comparator triggers when IN+ exceeds IN− by > hysteresis |
| 4 (OE) | Output enable control | Active-high logic input; drives both outputs to high-Z when low |
| 5 (VCC) | Positive supply | Single 5-V power rail; powers internal Schottky logic and analog stages |
| 6 (OUT−) | Inverted TTL output | Logic complement of OUT+; sinks current when active low |
| 7 (OUT+) | Non-inverted TTL output | Direct logic representation of comparison result; sources current when active high |
| 8 (GND) | Ground reference | Analog and digital return path; must be low-impedance for noise immunity |
Key Features
| Feature | Design Value |
|---|---|
| Self-biased inputs | Eliminates external biasing components; simplifies PCB layout and reduces BOM count |
| Complementary 3-state outputs | Enables shared-bus architectures without external logic gates or pull-ups |
| 5-mV hysteresis | Provides deterministic switching in presence of input noise up to ±2.5 mV |
| 25-ns response time | Supports >30 MHz decision rates in high-throughput digital storage interfaces |
| 0–5.5 V common-mode range | Accepts signals directly from 5-V DACs, ADCs, or logic buffers without attenuation |
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: Comparator converting analog readback waveform into clean digital NRZ data stream. Use Value: 25 ns propagation delay ensures accurate sampling of narrow pulse widths in legacy IDE/ATA interfaces. | Use Scenario: Threshold detection in real-time oscilloscope front-end signal conditioning. IC Role / Device Role / Timing Role: Fast edge-triggered event capture before digitization by downstream ADC. Use Value: 5 mV hysteresis prevents chatter on slowly varying or noisy sensor signals. |
| Bus Arbitration Logic | TTL-Level Signal Conditioning |
Use Scenario: Resolving priority conflicts among multiple microcontroller peripherals sharing a data bus. IC Role / Device Role / Timing Role: Enabling/disabling peripheral drivers via 3-state outputs controlled by arbitration logic. Use Value: Complementary outputs allow direct generation of enable/disable pairs without inverters. | Use Scenario: Converting slow-rising analog sensor outputs (e.g., thermistor networks) to sharp TTL edges. IC Role / Device Role / Timing Role: Level translator and noise filter between analog domain and digital controller inputs. Use Value: Self-biased inputs eliminate need for external resistor dividers or op-amp buffers. |
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, requires external pull-up and hysteresis resistors | Suitable for non-TTL systems needing flexible output voltage translation | Select when interfacing with mixed-voltage logic or requiring adjustable hysteresis |
| TL3016CD | Higher speed (4.5 ns), rail-to-rail input, but no 3-state outputs or OE pin | Better for ultra-fast sampling; lacks bus-sharing capability | Select when propagation delay < 10 ns is critical and 3-state functionality is unnecessary |
Compared with LM311DR and TL3016CD, the TL712CD uniquely combines TTL-compatible complementary 3-state outputs, integrated 5-mV hysteresis, and single-supply operation-making it optimal for legacy 5-V bus-oriented systems where output gating and noise immunity are jointly required.
Availability
TL712CD is available at Aetrix Electronics and suitable for disk memory read chains, high-speed data acquisition subsystems, and TTL-level signal conditioning circuits requiring stable component supply and long-term industrial availability.
Supply support for TL712CD 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 solutions with over 90 years of innovation in high-reliability components.
The TL712CD belongs to TI's legacy bipolar comparator product line, designed specifically for high-speed, single-supply 5-V applications in disk drive electronics and industrial control systems where TTL compatibility and deterministic switching are essential.
FAQ
What is the operating temperature range for TL712CD?
The TL712CD is rated for operation from 0°C to 70°C ambient temperature, matching commercial-grade requirements for desktop computing and industrial control applications. This range is confirmed in the "recommended operating conditions" table of the SLCS002D datasheet and applies specifically to the SOIC-D package variant TL712CD. Thermal derating is required above 70°C due to its 97°C/W θJA value.
Does TL712CD require external hysteresis components?
No, TL712CD does not require external hysteresis components. It integrates 5 mV typical hysteresis internally, as specified in the "electrical characteristics" table of the SLCS002D datasheet. This built-in hysteresis stabilizes switching behavior against noise without adding external resistors or feedback networks-unlike comparators such as LM311DR which rely on external configuration.
What is the function of Pin 1 (NC) on TL712CD?
Pin 1 on TL712CD is labeled NC (No Connection) and has no internal connection. Per the official TI package drawing D0008A and pinout diagram in SLCS002D, this pin must remain unconnected-neither grounded nor routed-to avoid mechanical stress or unintended coupling. It is a structural placeholder in the SOIC-8 footprint and carries no electrical function in TL712CD.
Can TL712CD drive standard TTL loads directly?
Yes, TL712CD can drive standard TTL loads directly. Its complementary outputs meet TTL voltage thresholds: VOH ≥ 2.7 V at −1 mA and VOL ≤ 0.5 V at 16 mA, as verified in the SLCS002D datasheet's "electrical characteristics" table. This eliminates need for level-shifting buffers when interfacing with 74LS or 74F-series logic, making TL712CD suitable for legacy 5-V system integration.
Is TL712CD pin-compatible with TL712CP?
Yes, TL712CD and TL712CP share identical 8-pin functional pinout (IN−, IN+, OE, VCC, OUT−, OUT+, GND, NC), though they differ in package: SOIC-D vs. PDIP-P. Both follow the same top-view pin numbering and logic assignment per SLCS002D Figure 1. Mechanical dimensions and thermal characteristics differ, but PCB layout for signal routing remains interchangeable if footprint adapters are used.
TL712CD Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Series:
- -
- Packaging:
- Bulk
- 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-SOIC
TL712CD FAQ
1.How can I place an order for TL712CD through Aetrix?
Please submit a Request for Quotation (RFQ) for TL712CD 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 TL712CD reliable?
The price and inventory of TL712CD are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TL712CD is usually 5 days.
3.What payment methods are accepted for TL712CD?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TL712CD transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TL712CD?
TL712CD orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TL712CD 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 TL712CD?
For technical support, including TL712CD datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TL712CD requirements.
6.How does Aetrix verify that TL712CD is sourced from the original manufacturer or authorized distributors?
All TL712CD 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 TL712CD meets industry standards.
7.What is the process for return or replacement of TL712CD?
All TL712CD units undergo pre-shipment inspection (PSI). If there is an issue with TL712CD, 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 TL712CD part is unused and in its original packaging.
Return procedure for TL712CD:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TL712CD Tags
-
LM2903DR
Texas Instruments
-
LM339DR
Texas Instruments
-
LM339PWR
Texas Instruments
-
LM393DT
STMicroelectronics
-
LM2901PWR
Texas Instruments
-
LM2903DT
STMicroelectronics
-
LM393DR
Texas Instruments
-
LM239DR
Texas Instruments
-
LM339APWR
Texas Instruments
-
LM2903P
Texas Instruments
-
LM393ADR
Texas Instruments
-
NCX2200GMAZ
NXP Semiconductors
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
