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Analog Devices Inc. LT1714IGN#PBF
- Part No.:
- LT1714IGN#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Comparators
- Package:
- 16-SSOP (0.154", 3.90mm Width)
- Datasheet:
-
LT1714IGN#PBF.pdf
- Description:
- IC COMPARATOR 2 W/LATCH 16SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:257
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Product details
Overview
LT1714IGN#PBF from Analog Devices (formerly Linear Technology) is a dual, ultrafast 7ns rail-to-rail comparator with complementary TTL/CMOS-compatible outputs and independent latch enable inputs per channel. It operates from single 2.4V–12V or dual ±2.4V–±6V supplies, delivers 10mA output drive, and supports high-speed sampling, crystal oscillator circuits, and pulse width modulation at up to 65MHz toggle frequency.
For engineers reviewing the LT1714IGN#PBF datasheet, LT1714IGN#PBF pinout, LT1714IGN#PBF application, or LT1714IGN#PBF equivalent, key selection criteria include propagation delay (7ns typ. at 20mV overdrive), latch timing (8ns latch propagation delay), rail-to-rail input range (–0.1V to V+ + 0.1V), output swing (0.35V low / V+ – 0.7V high at 10mA), and dual-channel independent latching capability.
Technical Context
The LT1714IGN#PBF integrates two fully independent high-speed comparators in a single 16-lead narrow SSOP package, each with rail-to-rail inputs, matched complementary outputs, and dedicated latch enable pins (pins 9 and 16). Its internal latch retains output state while the respective latch pin is held high, with 100mV hysteresis for noise immunity on latch signals.
It employs a bipolar input stage enabling operation beyond supply rails without phase reversal, supports common-mode voltages from –5.1V to +5.1V under ±5V supplies, and features matched propagation delays (differential tPD ≤ 3ns) critical for time-sensitive dual-channel applications like window comparators and simultaneous full-duplex interfaces.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Propagation Delay | 7ns typical at 20mV overdrive - enables sub-10ns decision timing in high-speed A/D front-ends and sampling circuits. |
| Rail-to-Rail Input Range | –0.1V to V+ + 0.1V - allows direct interfacing to sensors or DACs operating near supply rails without level-shifting. |
| Output Drive Capability | Sinks 10mA to within 0.5V of GND; sources 10mA to within 0.7V of V+ - directly drives TTL/CMOS logic loads without external buffers. |
| Latch Propagation Delay | 8ns - ensures fast capture of transient events in trigger or strobe applications with minimal latency. |
| Supply Voltage Range | Single: 2.4V–12V; Dual: ±2.4V–±6V - supports legacy 5V, modern 3.3V/2.7V, and industrial ±5V systems from one device. |
| Input Offset Voltage | 0.5mV typical (±5V supply) - maintains accuracy in precision threshold detection and current-sense amplification. |
| Maximum Toggle Frequency | 65MHz - suitable for high-speed clock/data recovery and digital signal conditioning in communication links. |
Pinout & Package
LT1714IGN#PBF is housed in a 16-lead narrow plastic SSOP (GN package), 0.150" body width, with exposed pad not electrically connected. Pin pitch is 0.025" (0.635mm); overall dimensions are 0.229" × 0.150" (5.82mm × 3.81mm).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (–IN A) | Inverting input of Channel A | Accepts rail-to-rail analog signals; enables differential comparison with +IN A (Pin 2). |
| 2 (+IN A) | Noninverting input of Channel A | Paired with Pin 1 for A-channel threshold detection; supports common-mode range beyond supplies. |
| 3, 6 (V–) | Negative supply rail (dual supply) or ground reference (single supply) | Two dedicated V– pins must be externally shorted to reduce impedance and improve PSRR. |
| 4, 5 (V+) | Positive supply rail | Two V+ pins must be externally shorted to minimize supply path inductance for high-speed stability. |
| 7 (+IN B) | Noninverting input of Channel B | Independent B-channel input; identical electrical specs to +IN A (Pin 2). |
| 8 (–IN B) | Inverting input of Channel B | Paired with Pin 7 for B-channel comparison; no crosstalk with A-channel when properly decoupled. |
| 9 (LATCH ENABLE B) | Active-high latch control for Channel B outputs | Latches QB/QB (Pins 11–12) when high; hysteresis prevents false triggering on slow/noisy signals. |
| 10 (GND) | Ground reference for Channel B | Dedicated GND pin for B-channel; improves isolation between channels in mixed-signal layouts. |
| 11 (QB) | Noninverting output of Channel B | Complementary to Pin 12; TTL/CMOS compatible; sinks/sources 10mA with rail-to-rail swing. |
| 12 (QB) | Inverting output of Channel B | Provides true/complement pair for differential signaling or logic-level translation. |
| 13 (QA) | Inverting output of Channel A | Complementary to Pin 14; shares same drive strength and voltage swing as Pins 11–12. |
| 14 (QA) | Noninverting output of Channel A | Primary A-channel output; matches Pin 11 in timing and loading behavior. |
| 15 (GND) | Ground reference for Channel A | Dedicated GND for A-channel; enables separate ground routing to suppress inter-channel coupling. |
| 16 (LATCH ENABLE A) | Active-high latch control for Channel A outputs | Independent of Pin 9; allows asynchronous latching of A- and B-channel data in real-time systems. |
Key Features
| Feature | Design Value |
|---|---|
| Ultrafast 7ns propagation delay | Enables sub-10ns decision cycles in automatic test equipment and high-speed data acquisition. |
| Rail-to-rail complementary outputs | Eliminates need for external level shifters when driving 3.3V/5V logic families directly from comparator outputs. |
| Independent per-channel latch enable | Supports asynchronous capture of dual-sensor events (e.g., rising/falling edge detection) without shared control logic. |
| Input overvoltage tolerance without phase reversal | Allows safe interface to signals exceeding supply rails by ≥100mV-critical in motor control and power supply monitoring. |
| Matched propagation delay between channels | Differential tPD ≤ 3ns ensures precise timing alignment in window comparators and dual-edge discriminators. |
Applications
| High-Speed Sampling Circuits | Crystal Oscillator Circuits |
|---|---|
Use Scenario: Capturing fast transient waveforms in oscilloscopes or digitizers using track-and-hold architectures. IC Role / Device Role / Timing Role: Dual comparator acts as precision zero-crossing detector and sample-enable gate with sub-10ns timing resolution. Use Value: 7ns propagation delay and 65MHz toggle frequency enable accurate sampling of >30MHz analog signals without aperture jitter degradation. | Use Scenario: Building voltage-tunable crystal oscillators (VCXO) for NTSC subcarrier generation and phase-locked loops. IC Role / Device Role / Timing Role: LT1714IGN#PBF configured as series-resonant oscillator core with varactor tuning; dual outputs support square/sine dual-path generation. Use Value: Rail-to-rail inputs accept wide tuning voltage range (0–5V); matched outputs ensure clean 14.31818MHz fundamental with <28psRMS jitter on 5V supply. |
| Pulse Width Modulation (PWM) | Current Sense for Switching Regulators |
Use Scenario: Generating precise duty-cycle-controlled gate drive signals in DC-DC converters and motor drivers. IC Role / Device Role / Timing Role: Dual comparator compares ramp waveform against reference to generate PWM edges; latch enables synchronous update of duty cycle. Use Value: Independent latch pins (Pins 9 & 16) allow synchronized edge updates across both high-side and low-side switches without timing skew. | Use Scenario: Monitoring inductor current in synchronous buck converters to implement peak-current-mode control. IC Role / Device Role / Timing Role: High-speed comparator detects current-sense resistor voltage crossing threshold; rail-to-rail input accommodates low-side sensing near ground. Use Value: 0.5mV offset voltage and 7ns delay ensure accurate current limit detection at switching frequencies up to 2MHz with minimal dead-time uncertainty. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual high-speed comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX961ESA+ | Single-supply only (2.7V–5.5V); no latch function; 4.5ns propagation delay; 30mA output drive | Optimized for ultra-low-voltage portable systems; lacks dual-latch capability required for synchronized dual-channel capture | Select when lowest propagation delay and higher output current are prioritized over latch functionality and dual-supply flexibility |
| TLV3502IDR | 3.5ns propagation delay; rail-to-rail input/output; no latch; 50mA sink/source; 2.7V–5.5V supply only | Targeted at high-drive, low-latency applications like laser diode drivers; no latch or dual-supply support limits use in industrial timing systems | Choose for maximum speed and drive strength in 3.3V-only designs where latch control is implemented externally |
Compared with MAX961ESA+ and TLV3502IDR, the LT1714IGN#PBF uniquely combines dual independent latches, ±5V dual-supply operation, and 7ns delay-making it irreplaceable in applications requiring synchronized, rail-to-rail, latch-enabled dual-channel comparison under mixed-voltage conditions.
Availability
LT1714IGN#PBF is available at Aetrix Electronics and suitable for high-speed sampling circuits, crystal oscillator designs, and current-sense applications requiring stable component supply, long-term industrial temperature support (–40°C to +85°C), and consistent parametric performance across production lots.
Supply support for LT1714IGN#PBF 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 technologies, serving industrial, automotive, communications, and healthcare markets.
The LT1714IGN#PBF belongs to ADI's legacy Linear Technology high-speed comparator family, engineered specifically for precision timing-critical systems demanding ultrafast response, latch retention, and robust rail-to-rail operation across wide supply ranges.
FAQ
What is the operating temperature range guaranteed for the LT1714IGN#PBF?
The LT1714IGN#PBF is guaranteed to meet all specifications over the industrial temperature range of –40°C to +85°C. This is confirmed by the "I" grade designation in the part number (LT1714IGN = Industrial grade), and the datasheet explicitly states full characterization and testing across this range, unlike the commercial-grade "C" variant.
Does the LT1714IGN#PBF support true dual-supply operation with negative voltage on V–?
Yes, the LT1714IGN#PBF supports true dual-supply operation with V– ranging from –7V to 0V and V+ from 2.4V to 7V, provided the total supply voltage (V+ – V–) does not exceed 12.6V. The absolute maximum rating for V– is –10V relative to GND, and electrical characteristics are fully specified at ±5V supplies.
How are the two V+ and two V– pins on the LT1714IGN#PBF intended to be used?
The LT1714IGN#PBF has two V+ pins (4 and 5) and two V– pins (3 and 6) to reduce supply path inductance and improve high-frequency PSRR. They must be externally shorted together with low-inductance traces and individually bypassed near the package. This configuration minimizes supply bounce during fast output transitions and enhances channel-to-channel isolation.
Can the LT1714IGN#PBF's latch function operate reliably with slow-moving or noisy control signals?
Yes, the LT1714IGN#PBF's latch enable inputs (Pins 9 and 16) incorporate built-in ~100mV hysteresis, as documented in the datasheet's "Latch Pin Dynamics" section. This hysteresis prevents metastability and false triggering when driven by slow-rising signals or signals with noise below the hysteresis threshold, ensuring robust latching behavior in real-world industrial environments.
Is the LT1714IGN#PBF pin-compatible with other devices in the LT1713/LT1714 family?
No - the LT1714IGN#PBF uses a 16-pin narrow SSOP (GN) package, while the single-channel LT1713 is in an 8-pin MSOP. There is no pin-compatible alternative within the family. Substitution requires PCB layout revision; however, functional equivalents like the MAX961ESA+ or TLV3502IDR require different pinouts and lack the dual-latch architecture of the LT1714IGN#PBF.
LT1714IGN#PBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Package/Case:
- 16-SSOP (0.154", 3.90mm Width)
- Series:
- UltraFast™
- Packaging:
- Tube
- Product Status:
- Active
- Type:
- with Latch
- Number of Elements:
- 2
- Output Type:
- CMOS, Complementary, Rail-to-Rail, TTL
- Voltage - Supply, Single/Dual (±):
- 2.4V ~ 12V, ±2.4V ~ 6V
- :
- 4mV @ 5V
- Voltage - Input Offset (Max):
- 2µA @ 5V
- Current - Input Bias (Max):
- 20mA
- Current - Output (Typ):
- 7.5mA
- Current - Quiescent (Max):
- 70dB CMRR, 80dB PSRR
- CMRR, PSRR (Typ):
- 11ns
- Propagation Delay (Max):
- -
- Hysteresis:
- -40°C ~ 85°C
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- Surface Mount
- :
- 16-SSOP
LT1714IGN#PBF FAQ
1.How can I place an order for LT1714IGN#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LT1714IGN#PBF 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 LT1714IGN#PBF reliable?
The price and inventory of LT1714IGN#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LT1714IGN#PBF is usually 5 days.
3.What payment methods are accepted for LT1714IGN#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LT1714IGN#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LT1714IGN#PBF?
LT1714IGN#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LT1714IGN#PBF 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 LT1714IGN#PBF?
For technical support, including LT1714IGN#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LT1714IGN#PBF requirements.
6.How does Aetrix verify that LT1714IGN#PBF is sourced from the original manufacturer or authorized distributors?
All LT1714IGN#PBF 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 LT1714IGN#PBF meets industry standards.
7.What is the process for return or replacement of LT1714IGN#PBF?
All LT1714IGN#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LT1714IGN#PBF, 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 LT1714IGN#PBF part is unused and in its original packaging.
Return procedure for LT1714IGN#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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