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Analog Devices Inc. LT1719IS6#TRPBF
- Part No.:
- LT1719IS6#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Comparators
- Package:
- SOT-23-6 Thin, TSOT-23-6
- Datasheet:
-
LT1719IS6#TRPBF.pdf
- Description:
- IC COMPARATOR 1 GEN PUR TSOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:4,023
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Product details
Overview
LT1719IS6#TRPBF from Analog Devices (formerly Linear Technology) is an UltraFast™ rail-to-rail output comparator in a 6-lead TSOT-23 package, optimized for low-voltage operation (2.7V–6V supply), featuring 4.5ns propagation delay at 20mV overdrive, 4.2mA supply current at 3V, and integrated 3.5mV typical hysteresis. It serves as a high-speed threshold detector in crystal oscillator circuits and level translation interfaces.
For engineers reviewing the LT1719IS6#TRPBF datasheet, LT1719IS6#TRPBF pinout, LT1719IS6#TRPBF application, or LT1719IS6#TRPBF equivalent, key selection criteria include its single-supply compatibility (V+ to V− = 2.7V–6V), −40°C to +85°C industrial temperature grade, shutdown current of 0.1μA, and guaranteed 7ns delay at 5mV overdrive - critical for timing-critical sampling and zero-crossing detection.
Technical Context
The LT1719IS6#TRPBF uses a complementary bipolar input stage with PNP differential pair, enabling wide common-mode range (V− − 0.1V to V+ − 1.2V) and rail-to-rail TTL/CMOS-compatible outputs. Its internal 3.5mV hysteresis eliminates oscillation on slow-moving inputs without external components.
Unlike the SO-8 variant, the TSOT-23 version (LT1719IS6#TRPBF) employs a single dual-rail supply (V+, V−), eliminating separate input/output supplies but retaining full 4.5ns speed and 2.2ns rise/fall times. Shutdown control is active-high, pulling SHDN ≥ V+ − 0.5V disables the device while drawing <80μA.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Propagation Delay | 4.5ns at 20mV overdrive - enables sub-5ns timing resolution in high-speed sampling circuits. |
| Supply Voltage Range | 2.7V to 6V (V+ to V−) - supports direct interface with 3V and 5V logic domains without level shifters. |
| Input Offset Voltage | 0.4mV to 3.5mV - ensures accurate threshold detection within ±2mV error across temperature. |
| Hysteresis Voltage | 2.0mV to 7.0mV (typ 3.5mV) - provides noise immunity for reliable decision-making on noisy analog signals. |
| Shutdown Current | 7μA max at V+ = 3V - extends battery life in portable instrumentation during idle periods. |
| Output Drive | Rail-to-rail VOH = V+ − 0.4V, VOL = 0.4V @ 10mA - directly drives TTL/CMOS loads without pull-ups. |
| Operating Temperature | −40°C to +85°C - qualified for industrial embedded systems and automotive under-hood sensor interfaces. |
Pinout & Package
LT1719IS6#TRPBF is housed in a 6-lead Plastic TSOT-23 package (1.6mm × 2.9mm × 1.1mm height), rated for −40°C to +85°C operation. The thin-profile, surface-mount construction supports high-density PCB layouts in space-constrained applications such as portable test equipment and IoT edge nodes.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1: –IN | Inverting Input | Differential input node; accepts signals down to V− − 0.1V; biased with PNP input stage. |
| 2: V− | Negative Supply Rail | Reference for input stage and substrate; typically grounded in single-supply configurations. |
| 3: +IN | Noninverting Input | Differential input node; common-mode range extends to V+ − 1.2V. |
| 4: V+ | Positive Supply Rail | Powers both input and output stages; sets logic-high output level and common-mode ceiling. |
| 5: OUT | Comparator Output | Rail-to-rail CMOS/TTL-compatible output; sinks 10mA / sources 4mA; slew rate 2V/ns. |
| 6: SHDN | Shutdown Control | Active-high enable; pulls high ≥ V+ − 0.5V to disable; draws <80μA in shutdown mode. |
Key Features
| Feature | Design Value |
|---|---|
| UltraFast propagation | 4.5ns delay at 20mV overdrive - enables >200MHz toggle rates in delay-line and clock-recovery circuits. |
| Single-supply operation | V+ to V− = 2.7V–6V - eliminates need for split supplies in battery-powered signal conditioning. |
| Integrated hysteresis | 3.5mV typical - prevents chatter on slow edges without external feedback resistors. |
| Rail-to-rail output | VOH = V+ − 0.4V, VOL = 0.4V @ 10mA - ensures full logic swing into 50Ω or 1kΩ loads. |
| Low-power shutdown | 7μA max shutdown current at 3V - reduces system standby power by >99% vs active mode. |
Applications
| Crystal Oscillator Interface | High-Speed Threshold Detection |
|---|---|
|
Use Scenario: Driving TTL/CMOS output stage of a 1MHz–10MHz AT-cut crystal oscillator with fast edge fidelity. IC Role / Device Role / Timing Role: Comparator acts as zero-crossing detector converting sinusoidal crystal output to clean square wave clock. Use Value: 4.5ns propagation delay and 2.2ns fall time preserve jitter below 15psRMS, meeting timing budgets for PLL reference clocks. |
Use Scenario: Detecting voltage thresholds in precision analog front-ends for data acquisition systems. IC Role / Device Role / Timing Role: High-speed comparator provides deterministic decision point with sub-5ns latency for ADC trigger synchronization. Use Value: 0.4mV offset and 3.5mV hysteresis ensure stable trip points across −40°C to +85°C, reducing calibration overhead. |
| Level Translation | Delay Line Construction |
|
Use Scenario: Translating between 3.3V logic and 5V logic domains in mixed-voltage FPGA I/O banks. IC Role / Device Role / Timing Role: Comparator functions as bidirectional level shifter using rail-to-rail output and wide input common-mode range. Use Value: Single 5V supply enables V+ = 5V, V− = 0V configuration; outputs swing 0.4V–4.6V, compatible with both LVTTL and CMOS inputs. |
Use Scenario: Building programmable digital delay elements in test equipment and high-speed serial link margining. IC Role / Device Role / Timing Role: Cascaded LT1719IS6#TRPBF units form tapped delay lines with predictable, temperature-stable skew. Use Value: 0.5ns max propagation skew (tSKEW) and <1ps/°C delay drift enable sub-nanosecond delay resolution. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-speed comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX961ASA+ | 4.8ns delay at 20mV overdrive; 5.5V max supply; no shutdown pin; SO-8 only. | Lacks shutdown feature and TSOT-23 packaging; requires PCB redesign for space-constrained layouts. | Choose when board area is not constrained and shutdown functionality is unnecessary. |
| ADCMP600BRMZ | 2.5ns delay; 3.3V/5V supply; 1.2mA quiescent current; no internal hysteresis. | Requires external hysteresis network; higher speed but greater design complexity for noise immunity. | Choose when sub-3ns timing is mandatory and external feedback is acceptable. |
Compared with MAX961ASA+ and ADCMP600BRMZ, the LT1719IS6#TRPBF uniquely combines ultrafast response, integrated hysteresis, shutdown capability, and TSOT-23 packaging - making it optimal for compact, low-power, noise-immune high-speed decision circuits where layout simplicity and thermal robustness are prioritized.
Availability
LT1719IS6#TRPBF is available at Aetrix Electronics and suitable for crystal oscillator circuits, high-speed threshold detectors, level translators, and delay-line designs requiring stable component supply across industrial temperature ranges.
Supply support for LT1719IS6#TRPBF 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
Analog Devices, Inc. (ADI) is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving industrial, automotive, communications, and healthcare markets.
The LT1719IS6#TRPBF belongs to ADI's legacy Linear Technology UltraFast™ comparator family, engineered specifically for timing-critical applications demanding sub-5ns latency, rail-to-rail interfacing, and robust operation in harsh environments.
FAQ
What is the maximum operating supply voltage for LT1719IS6#TRPBF?
The LT1719IS6#TRPBF supports a V+ to V− supply range of 2.7V to 6V. Absolute maximum ratings specify V+ to V− ≤ 7V; exceeding 6V may degrade long-term reliability or cause parametric shift. Operation at 6V is fully characterized per datasheet, delivering 4.5ns delay and 0.4V VOL with 10mA sink current. Always maintain V− ≥ GND and avoid reverse polarity connections to prevent latch-up.
Does LT1719IS6#TRPBF require external hysteresis for stable operation?
No, the LT1719IS6#TRPBF includes 3.5mV typical internal hysteresis, sufficient for most high-speed threshold detection tasks. This eliminates the need for external positive feedback resistors in standard applications like crystal oscillator squaring or zero-crossing detection. External hysteresis can be added via resistor networks if wider bands (>10mV) are required, but the internal hysteresis ensures stability even with slow-moving inputs without additional components.
How does the shutdown function work on LT1719IS6#TRPBF?
The LT1719IS6#TRPBF features an active-high shutdown pin (SHDN, Pin 6). Pulling SHDN ≥ V+ − 0.5V disables the comparator, reducing supply current to ≤80μA at 3V. During shutdown, both inputs and output enter high-impedance states. A pull-down resistor to ground is recommended if unused; tying SHDN directly to ground ensures always-on operation. The internal FET pull-up ensures reliable disable behavior with open-circuit or TTL-level control signals.
Can LT1719IS6#TRPBF operate from a single 3.3V supply?
Yes, the LT1719IS6#TRPBF is fully specified for 3.3V operation (V+ = 3.3V, V− = 0V). At this supply, it delivers 4.5ns propagation delay (20mV overdrive), 4.2mA supply current, VOH = 2.9V, VOL = 0.4V, and maintains full −40°C to +85°C performance. Input common-mode range spans −0.1V to 2.1V, accommodating typical 3.3V analog signal chains without level shifting.
What is the input common-mode voltage range for LT1719IS6#TRPBF?
The LT1719IS6#TRPBF input common-mode range is V− − 0.1V to V+ − 1.2V. With V+ = 5V and V− = 0V, this yields −0.1V to +3.8V - supporting signals that slightly undershoot ground or remain well below the positive rail. If one input stays within this range, the other may extend to absolute maximums (±7V), preserving correct output polarity. This flexibility simplifies interfacing with sensors, DACs, and op-amp outputs in mixed-signal systems.
LT1719IS6#TRPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Package/Case:
- SOT-23-6 Thin, TSOT-23-6
- Series:
- UltraFast™
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- General Purpose
- Number of Elements:
- 1
- Output Type:
- CMOS, Rail-to-Rail, TTL
- Voltage - Supply, Single/Dual (±):
- 2.7V ~ 6V
- :
- 2.5mV @ 5V
- Voltage - Input Offset (Max):
- 6µA @ 5V
- Current - Input Bias (Max):
- 20mA
- Current - Output (Typ):
- 9mA
- Current - Quiescent (Max):
- 65dB CMRR, 80dB PSRR
- CMRR, PSRR (Typ):
- 13ns
- Propagation Delay (Max):
- 7mV
- Hysteresis:
- -40°C ~ 85°C
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- Surface Mount
- :
- TSOT-23-6
LT1719IS6#TRPBF FAQ
1.How can I place an order for LT1719IS6#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LT1719IS6#TRPBF 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 LT1719IS6#TRPBF reliable?
The price and inventory of LT1719IS6#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LT1719IS6#TRPBF is usually 5 days.
3.What payment methods are accepted for LT1719IS6#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LT1719IS6#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LT1719IS6#TRPBF?
LT1719IS6#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LT1719IS6#TRPBF 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 LT1719IS6#TRPBF?
For technical support, including LT1719IS6#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LT1719IS6#TRPBF requirements.
6.How does Aetrix verify that LT1719IS6#TRPBF is sourced from the original manufacturer or authorized distributors?
All LT1719IS6#TRPBF 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 LT1719IS6#TRPBF meets industry standards.
7.What is the process for return or replacement of LT1719IS6#TRPBF?
All LT1719IS6#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LT1719IS6#TRPBF, 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 LT1719IS6#TRPBF part is unused and in its original packaging.
Return procedure for LT1719IS6#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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