My Inquiry
My Account
Analog Devices Inc. LTC6905HS5-80#TRPBF
- Part No.:
- LTC6905HS5-80#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Programmable Timers and Oscillators
- Package:
- SOT-23-5 Thin, TSOT-23-5
- Datasheet:
-
LTC6905HS5-80#TRPBF.pdf
- Description:
- IC OSC SILICON 80MHZ TSOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:1,162
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LTC6905HS5-80#TRPBF from Analog Devices (formerly Linear Technology) is a precision fixed-frequency silicon oscillator in ThinSOT-23 package, delivering factory-trimmed output frequencies of 80MHz, 40MHz, and 20MHz via internal ÷1/÷2/÷4 divider, with ±0.5% typical frequency accuracy at 25°C, ±20ppm/°C temperature stability, and rail-to-rail CMOS output driving 600Ω loads. It serves as a drop-in replacement for quartz crystals in high-vibration industrial timing applications.
For engineers reviewing the LTC6905HS5-80#TRPBF datasheet, LTC6905HS5-80#TRPBF pinout, LTC6905HS5-80#TRPBF application, or LTC6905HS5-80#TRPBF equivalent, key selection criteria include its H-grade –40°C to 125°C operating range, fast 100µs start-up, synchronous OE control, and low-jitter (<0.8% typical) square-wave generation under single 2.7V–5.5V supply.
Technical Context
The LTC6905HS5-80#TRPBF implements a master oscillator core with programmable integer division (N = 1, 2, or 4), where DIV pin state (V+, floating, or GND) selects output frequency without external components. Its internal bias circuitry provides stable 1V reference for frequency-setting current sources, enabling factory trimming for precise 80MHz base frequency.
It features asynchronous output disable via OE pin (low = immediate disable) and synchronous enable (high = next rising edge), eliminating pulse glitches. Output rise/fall time is 0.5ns into 5pF load, and timing jitter remains <0.8% typical across all three output frequencies due to inherent divider-induced jitter reduction.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Frequencies | 80MHz (÷1), 40MHz (÷2), 20MHz (÷4) - selectable via DIV pin state, no external components required |
| Frequency Accuracy | ±0.5% typical at 25°C - enables reliable clocking without post-manufacture calibration |
| Temp Stability | ±20ppm/°C - ensures minimal frequency drift over full –40°C to 125°C operating range |
| Supply Range | 2.7V to 5.5V - supports wide-input industrial power rails and battery-backed systems |
| Start-Up Time | 100µs typical to 1% final frequency - suitable for fast-wake applications like sensor nodes and safety controllers |
| Output Drive | CMOS rail-to-rail, drives 600Ω load at 2.7V - eliminates need for external buffer in moderate-load digital interfaces |
| Jitter Performance | <0.8% typical period jitter - meets setup/hold margin requirements for high-speed data capture at 80MHz |
Pinout & Package
Package: 5-lead TSOT-23 (ThinSOT), 1mm profile, JEDEC MO-193 compliant, footprint compatible with standard SOT-23 layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| V+ (Pin 1) | Power Supply Input | Accepts 2.7V–5.5V; requires local 0.1µF bypass to GND for stable oscillation |
| GND (Pin 2) | Ground Reference | Primary return path; must connect directly to low-impedance ground plane for jitter control |
| OE (Pin 3) | Output Enable Control | Low = immediate output disable; high = synchronous enable on next clock edge - prevents pulse slivers |
| DIV (Pin 4) | Divider Ratio Select | V+ = ÷1 (80MHz), floating = ÷2 (40MHz), GND = ÷4 (20MHz); internal 15µA pull-up/down aids floating detection |
| OUT (Pin 5) | CMOS Clock Output | Rail-to-rail square wave; drives 5kΩ/5pF min; rise/fall time = 0.5ns @ CL = 5pF |
Key Features
| Feature | Design Value |
|---|---|
| No external components required | Factory-trimmed oscillator eliminates crystal, load caps, and trim pots - reduces BOM count and layout area |
| Synchronous OE control | Eliminates metastability and glitch risks during clock gating - critical for deterministic real-time systems |
| Three-state DIV input | Enables frequency selection using simple MCU GPIO or pull-up/pull-down resistors - no level-shifting needed |
| H-grade temperature range | Specified performance from –40°C to 125°C - qualified for under-hood automotive, industrial PLC, and aerospace avionics |
| Low timing jitter | <0.8% typical jitter at 80MHz - supports reliable sampling in ADC interfaces and high-speed serial links |
Applications
| Industrial Motor Drives | Automotive Engine Control Units |
|---|---|
Use Scenario: Generating precise PWM carrier clocks for IGBT gate drivers in variable-frequency drives. IC Role / Device Role / Timing Role: Primary system clock source for DSP-based motor control loop timing and ADC sampling synchronization. Use Value: ±20ppm/°C stability ensures consistent switching frequency across ambient temperature swings, preventing audible noise and torque ripple. | Use Scenario: Providing robust timing reference for crankshaft/camshaft position decoding in harsh under-hood environments. IC Role / Device Role / Timing Role: High-reliability clock generator replacing ceramic resonators subject to mechanical shock and thermal cycling. Use Value: 100µs start-up and –40°C to 125°C operation guarantee immediate engine cranking response and sustained ECU functionality during extreme thermal transients. |
| Medical Imaging Data Acquisition | Test & Measurement Equipment |
Use Scenario: Clocking high-speed ADCs in portable ultrasound front-ends requiring low-jitter sampling clocks. IC Role / Device Role / Timing Role: Low-phase-noise clock source for 12-bit, 80MSPS analog-to-digital conversion. Use Value: <0.8% jitter preserves ENOB by minimizing aperture uncertainty - critical for accurate echo signal reconstruction. | Use Scenario: Serving as configurable reference clock in automated test equipment (ATE) for digital pattern generators. IC Role / Device Role / Timing Role: Programmable frequency source supporting multiple DUT clock requirements via DIV pin control. Use Value: Three factory-set frequencies (80/40/20MHz) eliminate need for multiple crystal options - simplifies inventory and test fixture design. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar fixed-frequency oscillator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SiT8008BI-73-33E-80.000000 | MEMS-based, ±20ppm initial accuracy, 1.8V–3.3V supply only, no OE or DIV pins | Requires external logic for frequency switching; lacks synchronous enable/disable | Preferred when ultra-low power or smaller 2.0×1.6mm footprint is prioritized over configurability |
| MAX7375EUT+T | Crystal oscillator with integrated crystal, ±50ppm accuracy, fixed 80MHz output, no divider or OE | Single-frequency only; no frequency scaling or output gating capability | Chosen when absolute lowest cost and highest shock resistance are primary, and flexibility is not required |
Compared with SiT8008BI-73-33E-80.000000 and MAX7375EUT+T, the LTC6905HS5-80#TRPBF uniquely combines factory-trimmed 80MHz base frequency, on-the-fly ÷1/÷2/÷4 selection, and glitch-free OE control in a single 5-pin TSOT-23 - enabling adaptive clocking and power-gated operation without additional ICs.
Availability
LTC6905HS5-80#TRPBF is available at Aetrix Electronics and suitable for industrial motor drives, automotive engine control units, medical imaging data acquisition, and test & measurement equipment requiring stable component supply across extended temperature ranges.
Supply support for LTC6905HS5-80#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 acquired Linear Technology in 2017 and maintains its high-performance analog and mixed-signal product lines, including precision timing solutions.
The LTC6905HS5-80#TRPBF belongs to the LTC6905-XXX series of silicon oscillators designed for space-constrained, high-reliability applications where quartz crystals are impractical due to vibration, shock, or thermal stress.
FAQ
What is the operating temperature range for the LTC6905HS5-80#TRPBF?
The LTC6905HS5-80#TRPBF is rated for operation from –40°C to +125°C, with full electrical specifications guaranteed across this extended industrial temperature range. This H-grade qualification makes it suitable for under-hood automotive, industrial automation, and aerospace applications where ambient temperatures exceed standard commercial or industrial grade limits. The device's ±20ppm/°C frequency stability ensures predictable timing behavior throughout this range.
How does the DIV pin select output frequency on the LTC6905HS5-80#TRPBF?
The DIV pin on the LTC6905HS5-80#TRPBF selects one of three output frequencies via its three-state logic: tying DIV to V+ selects ÷1 (80MHz), leaving it floating selects ÷2 (40MHz), and tying it to GND selects ÷4 (20MHz). Internal 15µA current sources detect the floating state. No external resistors or logic gates are needed - direct connection to MCU GPIO or simple pull-up/pull-down suffices. All three frequencies are factory-trimmed and specified in the datasheet.
Does the LTC6905HS5-80#TRPBF require external capacitors or resistors to operate?
No, the LTC6905HS5-80#TRPBF requires no external frequency-setting components. It is a fully integrated silicon oscillator with factory-trimmed frequency and internal divider. Only a 0.1µF ceramic bypass capacitor between V+ and GND is mandatory for stable operation. No load capacitors, trim pots, or pull resistors are needed for basic functionality - though optional pull-up/pull-down may be used for DIV/OE if driven by open-drain sources.
What is the start-up time specification for the LTC6905HS5-80#TRPBF?
The LTC6905HS5-80#TRPBF achieves frequency stability within 1% of final value in 100µs typical after power-on. This fast start-up is enabled by its optimized oscillator core and internal bias circuitry, making it suitable for applications requiring rapid wake-up from sleep modes - such as battery-powered sensors, safety-critical controllers, and burst-mode communication systems. Start-up time is independent of supply voltage within the 2.7V–5.5V range.
Can the LTC6905HS5-80#TRPBF drive a 50Ω transmission line directly?
The LTC6905HS5-80#TRPBF is not designed to drive 50Ω lines directly. Its CMOS output is specified for 600Ω minimum resistive load at 2.7V. Driving 50Ω requires an external series resistor (e.g., 450Ω) to match impedance and prevent signal reflection and excessive current draw. Application Note 6905x TA02 shows a validated 950Ω series termination for 50Ω cable driving - confirming that direct 50Ω connection would violate output current and voltage swing specifications and degrade jitter performance.
LTC6905HS5-80#TRPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- SOT-23-5 Thin, TSOT-23-5
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Oscillator, Silicon
- Count:
- -
- Frequency:
- 80MHz
- Voltage - Supply:
- 2.7V ~ 5.5V
- Current - Supply:
- 7 mA
- Operating Temperature:
- -40°C ~ 125°C
- Supplier Device Package:
- TSOT-23-5
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
LTC6905HS5-80#TRPBF FAQ
1.How can I place an order for LTC6905HS5-80#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC6905HS5-80#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 LTC6905HS5-80#TRPBF reliable?
The price and inventory of LTC6905HS5-80#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC6905HS5-80#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC6905HS5-80#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC6905HS5-80#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC6905HS5-80#TRPBF?
LTC6905HS5-80#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC6905HS5-80#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 LTC6905HS5-80#TRPBF?
For technical support, including LTC6905HS5-80#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC6905HS5-80#TRPBF requirements.
6.How does Aetrix verify that LTC6905HS5-80#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC6905HS5-80#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 LTC6905HS5-80#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC6905HS5-80#TRPBF?
All LTC6905HS5-80#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC6905HS5-80#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 LTC6905HS5-80#TRPBF part is unused and in its original packaging.
Return procedure for LTC6905HS5-80#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LTC6905HS5-80#TRPBF Tags
-
NE555DR
Texas Instruments
-
SA555DR
Texas Instruments
-
NA555DR
Texas Instruments
-
SE555DR
Texas Instruments
-
NE555P
Texas Instruments
-
CD4541BM96
Texas Instruments
-
CD4541BE
Texas Instruments
-
TLC555QDR
Texas Instruments
-
TLC555IDR
Texas Instruments
-
TLC555QDRQ1
Texas Instruments
-
TPL5010DDCR
Texas Instruments
-
TLC555CP
Texas Instruments
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…
