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Analog Devices Inc. LTC6994CDCB-2#TRMPBF
- Part No.:
- LTC6994CDCB-2#TRMPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Delay Lines
- Package:
- 6-WFDFN Exposed Pad
- Datasheet:
-
LTC6994CDCB-2#TRMPBF.pdf
- Description:
- IC DELAY BLOCK 8TAP PROG 6DFN
- Quantity:
- Payment:
- Shipping:
Inventory:9,309
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Product details
Overview
LTC6994CDCB-2#TRMPBF from Analog Devices is a TimerBlox programmable delay block IC that delays both rising and falling input edges with 1µs to 33.6s range, ±2.3% max delay error (for delays >512µs), 2.25V–5.5V supply, and CMOS 20mA output drive. It operates in 0°C to 70°C ambient and is used in switch debouncing, noise discrimination, and precision timing control circuits.
For engineers reviewing the LTC6994CDCB-2#TRMPBF datasheet, LTC6994CDCB-2#TRMPBF pinout, LTC6994CDCB-2#TRMPBF application, or LTC6994CDCB-2#TRMPBF equivalent, key selection criteria include dual-edge delay capability, resistor-programmable timing accuracy, low 70µA supply current at 10µs delay, DFN-6 package footprint, and automotive-grade AEC-Q100 qualification for industrial reliability.
Technical Context
The LTC6994CDCB-2#TRMPBF implements a master oscillator with 1µs/50kΩ scaling factor, whose frequency is set by ISET current sourced from the SET pin via RSET. Delay time tDELAY = NDIV × RSET/50kΩ × 1µs, where NDIV is selected via DIV pin voltage (0–15) mapping to eight divider ratios (1, 8, 64, ..., 2²¹).
It features internal 4-bit A/D conversion of VDIV to determine both NDIV and POL bit; for LTC6994-2, POL = 1 enables output inversion while retaining dual-edge delay functionality. The device includes digital filtering on DIV input, power-on reset with 500×tMASTER start-up time, and hysteresis on IN pin for robust noise immunity.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Delay Range | 1µs to 33.6 seconds - supports wide timing applications from microsecond pulse qualification to multi-second system sequencing. |
| Delay Accuracy | ±2.3% max for tDELAY > 512µs - ensures predictable timing without calibration in most industrial control loops. |
| Supply Voltage | 2.25V to 5.5V - compatible with 3.3V and 5V logic systems and battery-powered operation down to 2.25V. |
| Supply Current | 70µA at 10µs delay (V+ = 2.25V, RSET = 800kΩ) - enables ultra-low-power timing in always-on sensor nodes. |
| Output Drive | ±20mA CMOS - directly drives LEDs, logic inputs, or small MOSFET gates without external buffers. |
| Operating Temp | 0°C to 70°C - specified commercial temperature grade suitable for consumer and industrial equipment. |
| Package | 6-Lead (2mm × 3mm) Plastic DFN - compact surface-mount footprint with exposed pad for thermal management. |
Pinout & Package
Package: 6-Lead (2mm × 3mm) Plastic DFN with exposed pad connected to GND. Low-profile 1mm height supports space-constrained PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN (Pin 4) | Logic Input | Accepts TTL/CMOS-level signals; hysteresis prevents false triggering on slow or noisy edges. |
| GND (Pin 2) | Ground Reference | Low-inductance return path; exposed pad must be soldered to PCB ground plane for thermal and noise performance. |
| SET (Pin 3) | Delay Programming | Sinks precise ISET current (1.25–20µA); connects to GND via RSET to set master oscillator period. |
| OUT (Pin 6) | Programmed Output | CMOS rail-to-rail output; sources/sinks 20mA; polarity invertible via DIV pin POL bit (LTC6994-2 only). |
| V+ (Pin 1) | Power Supply | 2.25V–5.5V input; requires local 0.1µF bypass capacitor to GND for stable oscillator operation. |
| DIV (Pin 5) | Divider & Polarity Control | Resistor-divider input (VDIV/V+ = (DIVCODE + 0.5)/16 ±1.5%) sets NDIV and output inversion (POL = 1). |
Key Features
| Feature | Design Value |
|---|---|
| Dual-edge delay | LTC6994CDCB-2#TRMPBF delays both rising and falling transitions - eliminates need for external edge-detection logic in pulse-width stabilization. |
| Resistor-programmable timing | Single RSET (50kΩ–800kΩ) sets master oscillator; no external clock or crystal required - simplifies BOM and layout. |
| Dynamic delay adjustment | DIV pin accepts analog voltage or DAC output to change NDIV during operation - enables adaptive timing in closed-loop systems. |
| Noise-immune input | IN pin hysteresis (≈0.55×V+ rising / 0.48×V+ –155mV falling) rejects sub-microsecond glitches - critical for switch debounce in high-vibration environments. |
| Low-power idle mode | Supply current drops to ≤95µA when RSET = 800kΩ and NDIV ≥ 512 - extends battery life in portable instrumentation. |
Applications
| Switch Debouncing | Noise Discrimination |
|---|---|
Use Scenario: Mechanical pushbutton or relay contact closure in industrial HMI or automotive control panels. IC Role / Device Role / Timing Role: LTC6994CDCB-2#TRMPBF acts as a hardware-based edge-delay filter, rejecting bounce transients <33.6s while preserving clean logic transitions. Use Value: Eliminates software debounce routines and associated MCU overhead; guarantees deterministic response within ±2.3% timing tolerance. | Use Scenario: Digital signal conditioning in motor drive feedback paths or sensor interfaces exposed to EMI. IC Role / Device Role / Timing Role: LTC6994CDCB-2#TRMPBF qualifies pulses by requiring minimum high/low duration before propagating - suppresses narrow noise spikes. Use Value: Provides analog-like noise rejection without op-amps or RC networks; maintains full 20mA drive strength for downstream logic. |
| Delay Matching | Portable Equipment Timing |
Use Scenario: Synchronizing multiple subsystems (e.g., ADC sampling, LED strobing, communication wake-up) in medical or test equipment. IC Role / Device Role / Timing Role: LTC6994CDCB-2#TRMPBF delivers identical delay to parallel signal paths using matched RSET and DIV configurations. Use Value: Achieves sub-microsecond skew between channels without FPGA or microcontroller intervention. | Use Scenario: Power sequencing and wake-up timing in battery-powered IoT sensors or handheld diagnostics tools. IC Role / Device Role / Timing Role: LTC6994CDCB-2#TRMPBF provides ultra-low-current (70µA) delay generation to extend shelf life and operational runtime. Use Value: Enables 10-year battery life in maintenance-free deployments by minimizing quiescent power in timing-critical subsystems. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar programmable delay applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LTC6994IDCB-2#TRPBF | Same functionality and pinout; rated for –40°C to 85°C operating range vs. 0°C to 70°C. | Required for extended-temperature industrial or automotive under-hood use cases. | Select when wider temperature range is mandatory; otherwise LTC6994CDCB-2#TRMPBF offers cost and supply-chain advantage for commercial-grade designs. |
| MAX6816EUT+T | Fixed 10ms debounce time; no resistor programming; 5V-only supply; SOT-23-6 package. | Only suitable for basic switch debouncing with fixed delay; lacks dynamic adjustment or wide-range timing. | Choose only for simple, low-cost, single-purpose debounce where programmability and sub-10ms resolution are unnecessary. |
Compared with LTC6994IDCB-2#TRPBF, the LTC6994CDCB-2#TRMPBF trades extended temperature range for lower cost and tighter inventory availability in commercial applications; versus MAX6816EUT+T, it provides 1µs–33.6s programmability, dual-supply support, and active polarity control - enabling complex timing architectures beyond fixed debounce.
Availability
LTC6994CDCB-2#TRMPBF is available at Aetrix Electronics and suitable for switch debouncing, noise discrimination, and portable equipment timing requiring stable component supply, consistent parametric performance, and long-term production continuity.
Supply support for LTC6994CDCB-2#TRMPBF 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 is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving industrial, automotive, communications, and healthcare markets.
The LTC6994CDCB-2#TRMPBF belongs to the TimerBlox family - silicon timing devices designed to replace discrete RC timers and crystal oscillators with programmable, low-power, high-accuracy alternatives for embedded timing functions.
FAQ
What is the maximum delay time achievable with the LTC6994CDCB-2#TRMPBF?
The LTC6994CDCB-2#TRMPBF supports a maximum delay time of 33.6 seconds, achieved when NDIV = 2²¹ (2,097,152) and RSET = 800kΩ. This value is derived from the equation tDELAY = NDIV × RSET/50kΩ × 1µs and is confirmed across the full 0°C to 70°C operating range per the datasheet's Electrical Characteristics table.
Does the LTC6994CDCB-2#TRMPBF support inverting output functionality?
Yes, the LTC6994CDCB-2#TRMPBF supports output inversion via the POL bit (most significant bit of DIVCODE). When DIVCODE ≥ 8, POL = 1 activates inversion while maintaining dual-edge delay behavior - a feature exclusive to the LTC6994-2 variant and explicitly documented in the Operation section and Table 1 of the datasheet.
What is the recommended bypass capacitor for the V+ pin of the LTC6994CDCB-2#TRMPBF?
The datasheet specifies a 0.1µF ceramic capacitor placed directly between the V+ pin (Pin 1) and GND (Pin 2) to minimize supply noise and ensure stable master oscillator operation. This requirement is stated in the PIN FUNCTIONS section and reinforced in the Typical Application schematic on page 1 of the datasheet.
Can the LTC6994CDCB-2#TRMPBF operate from a 2.25V supply?
Yes, the LTC6994CDCB-2#TRMPBF is fully specified to operate from 2.25V to 5.5V. Its supply current remains within datasheet limits (e.g., 70µA typical at 10µs delay), and all timing parameters including delay accuracy and propagation delay (tPD = 24ns max) are guaranteed across this range per the Electrical Characteristics table.
How does the LTC6994CDCB-2#TRMPBF differ from the LTC6994-1 variant?
The LTC6994CDCB-2#TRMPBF implements dual-edge delay (both rising and falling transitions) and supports output inversion via the POL bit, whereas the LTC6994-1 delays only one edge type (rising or falling, selected by POL). This functional distinction is defined in the DESCRIPTION and OPERATION sections and confirmed by the part number suffix "-2" in the ordering information table.
LTC6994CDCB-2#TRMPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- TimerBlox®
- Package/Case:
- 6-WFDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Number of Taps/Steps:
- 8
- Function:
- Programmable
- Delay to 1st Tap:
- -
- Tap Increment:
- -
- Available Total Delays:
- 1µs ~ 33.6s
- Number of Independent Delays:
- 1
- Voltage - Supply:
- 2.25V ~ 5.5V
- Operating Temperature:
- 0°C ~ 70°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 6-DFN (2x3)
LTC6994CDCB-2#TRMPBF FAQ
1.How can I place an order for LTC6994CDCB-2#TRMPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC6994CDCB-2#TRMPBF 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 LTC6994CDCB-2#TRMPBF reliable?
The price and inventory of LTC6994CDCB-2#TRMPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC6994CDCB-2#TRMPBF is usually 5 days.
3.What payment methods are accepted for LTC6994CDCB-2#TRMPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC6994CDCB-2#TRMPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC6994CDCB-2#TRMPBF?
LTC6994CDCB-2#TRMPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC6994CDCB-2#TRMPBF 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 LTC6994CDCB-2#TRMPBF?
For technical support, including LTC6994CDCB-2#TRMPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC6994CDCB-2#TRMPBF requirements.
6.How does Aetrix verify that LTC6994CDCB-2#TRMPBF is sourced from the original manufacturer or authorized distributors?
All LTC6994CDCB-2#TRMPBF 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 LTC6994CDCB-2#TRMPBF meets industry standards.
7.What is the process for return or replacement of LTC6994CDCB-2#TRMPBF?
All LTC6994CDCB-2#TRMPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC6994CDCB-2#TRMPBF, 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 LTC6994CDCB-2#TRMPBF part is unused and in its original packaging.
Return procedure for LTC6994CDCB-2#TRMPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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