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Skyworks Solutions Inc. SL2309ZI-1HT
- Part No.:
- SL2309ZI-1HT
- Manufacturer:
- Skyworks Solutions Inc.
- Package:
- 16-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
SL2309ZI-1HT.pdf
- Description:
- IC BUFFER 140MHZ 9CH3.3V 16TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,391
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Product details
Overview
SL2309ZI-1HT from Silicon Laboratories is a 16-pin TSSOP zero-delay buffer IC with high-drive capability, operating from 10 to 140 MHz at 3.3 V, delivering nine synchronized clock outputs (4+4+1) with ≤140 ps cycle-to-cycle jitter and ≤150 ps output-to-output skew for high-speed clock distribution in industrial-grade systems (–40°C to +85°C).
For engineers reviewing the SL2309ZI-1HT datasheet, SL2309ZI-1HT pinout, SL2309ZI-1HT application, or SL2309ZI-1HT equivalent, key selection criteria include its SpreadThru™ PLL support for spread-spectrum clocking, tri-state select control (S1/S2), PLL bypass mode, and verified compatibility with 15 pF loads up to 140 MHz in high-drive configuration.
Technical Context
The SL2309ZI-1HT integrates an on-chip SpreadThru™ PLL that locks to CLKIN and uses internal feedback from CLKOUT, enabling true zero-delay operation when load matching is applied. Its dual-bank architecture (Bank A: CLKA1–CLKA4; Bank B: CLKB1–CLKB4) supports independent enable/disable via S1/S2 pins, allowing dynamic power reduction by tri-stating unused banks.
In PLL bypass mode (S2=1, S1=0), the device functions as a non-zero-delay fanout buffer with DC-to-140 MHz operation under high-drive conditions and no PLL lock time penalty. The internal 1.8 V regulated PLL supply ensures stable jitter and skew performance across 3.0–3.6 V input voltage variation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Operating Frequency | 10–140 MHz (high-drive, 15 pF load); enables full-speed clock distribution in DTV and server platforms. |
| Cycle-to-Cycle Jitter | ≤140 ps max (66 MHz, 15 pF, –1H drive); meets tight timing margin requirements for DDR2/3 memory interfaces. |
| Output-to-Output Skew | ≤150 ps max (all outputs equally loaded); ensures deterministic phase alignment across multi-lane serial links. |
| Supply Voltage | 3.3 V ±10% (3.0–3.6 V); compatible with standard LDOs and avoids level-shifting in 3.3 V system domains. |
| Power Dissipation | 44 mA max at 133 MHz; translates to ~145 mW typical, supporting thermally constrained MFP and router PCB layouts. |
| Temperature Range | –40°C to +85°C (industrial grade); qualified for deployment in uncontrolled ambient environments like factory-floor networking gear. |
| Package | 16-pin TSSOP (4.4 mm width); surface-mount compatible with automated assembly and offers lower thermal resistance than SOIC (θJA = 68°C/W @ 3 m/s airflow). |
Pinout & Package
SL2309ZI-1HT is housed in a 16-pin TSSOP package (4.4 mm body width, 0.65 mm pitch), RoHS-compliant, with exposed pad not electrically connected. Pin 1 marked by notch or dot; pin 1 is CLKIN. Power pins (VDD, GND) are distributed across both sides for low-impedance decoupling.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 CLKIN | Reference clock input | Weak pull-down (250 kΩ); accepts LVCMOS input; triggers internal frequency detection for auto-power-down if floating or DC. |
| 2–3, 14–15 CLKA1–CLKA4 | Bank A clock outputs | High-drive outputs (–1H); each has weak pull-down (250 kΩ); individually controllable via S1/S2 decoding. |
| 6–7, 10–11 CLKB1–CLKB4 | Bank B clock outputs | Same drive strength and termination as Bank A; tri-statable independently to reduce system jitter and power. |
| 4, 13 VDD | 3.3 V power supply | Dual VDD pins minimize IR drop; requires 0.1 µF ceramic decoupling per pin placed adjacent to package. |
| 5, 12 GND | Power ground | Dual GND pins provide low-inductance return path; essential for maintaining <150 ps skew across all outputs. |
| 8 S2, 9 S1 | Select control inputs | Weak pull-up (250 kΩ); define four functional modes including PLL bypass, bank-A-only, bank-B-only, and full-enable. |
| 16 CLKOUT | PLL feedback output | Internal PLL reference node; load matching between CLKOUT and CLKA/B sets input-to-output delay (±220 ps range). |
Key Features
| Feature | Design Value |
|---|---|
| SpreadThru™ PLL | Passes spread-spectrum modulation (frequency, %, profile) unchanged from CLKIN to all outputs-enables EMI reduction without PLL-induced distortion. |
| Select-mode tri-state control | S1/S2 pins allow dynamic disabling of Bank A, Bank B, or both-reducing active current by >50% and lowering system-wide jitter when only four clocks are needed. |
| Zero-delay tuning via CLKOUT loading | Varying capacitive load on CLKOUT (vs. CLKA/B) adjusts input-to-output delay from –220 ps to +220 ps-enables board-level skew calibration without FPGA logic or external delay lines. |
| Auto-power-down on invalid input | Detects DC/floating CLKIN and forces all outputs to Hi-Z while drawing <25 µA-prevents false clocking and downstream logic glitches in hot-plug or reset scenarios. |
| Industrial-grade thermal performance | θJA = 68°C/W at 3 m/s airflow in TSSOP-supports sustained 140 MHz operation in enclosed industrial routers without forced cooling. |
Applications
| Printers & MFPs | Digital Copiers |
|---|---|
Use Scenario: Synchronizing image sensor readout, print engine timing, and network interface clocks in multifunction peripherals. IC Role / Device Role / Timing Role: Zero-delay clock distributor generating nine phase-aligned clocks from single crystal oscillator. Use Value: Eliminates inter-bank skew-induced data misalignment between scan line capture and page rendering subsystems. | Use Scenario: Coordinating document feeder motor control, laser diode modulation, and USB/Ethernet PHY clocks in high-volume copiers. IC Role / Device Role / Timing Role: High-drive clock fanout buffer with PLL bypass for legacy timing domains requiring DC-coupled clock paths. Use Value: Enables seamless transition between precision PLL-locked and direct-bypass modes during warm-up or fault recovery sequences. |
| Routers & Switches | Digital Embedded Systems |
Use Scenario: Distributing reference clocks to multiple Ethernet PHYs, packet processors, and DDR memory controllers in Layer 3 switches. IC Role / Device Role / Timing Role: Low-jitter clock repeater supporting 100–140 MHz operation with matched trace routing to maintain SerDes eye opening. Use Value: Achieves <140 ps cycle-to-cycle jitter at 133 MHz-preserves setup/hold margins for 1 Gbps+ serial interfaces. | Use Scenario: Providing synchronized clocks to FPGA fabric, ADC sampling engines, and communication peripherals in programmable logic-based instrumentation. IC Role / Device Role / Timing Role: Industrial-temperature zero-delay buffer with configurable bank enable for modular clock tree partitioning. Use Value: Supports –40°C to +85°C operation without derating, and allows runtime reconfiguration of clock domains via S1/S2 GPIO control. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar zero-delay clock buffer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| IDT5V9885BGI | 8-output, 3.3 V, 10–133 MHz; no SpreadThru™; higher jitter (200 ps CCJ); SOIC/TSSOP | Lacks spread-spectrum pass-through; unsuitable where EMI compliance depends on SSCG preservation. | Choose when SpreadThru™ is unnecessary and cost sensitivity outweighs jitter performance. |
| ICS8302AM-01LFT | 9-output, 3.3 V, 10–125 MHz; no PLL bypass; fixed zero-delay; TSSOP | No S1/S2 tri-state or bypass mode; cannot disable banks or operate as non-ZDB fanout buffer. | Prefer when static 9-output distribution suffices and dynamic power management is not required. |
Compared with SL2309ZI-1HT, IDT5V9885BGI trades spread-spectrum transparency for broader vendor support, while ICS8302AM-01LFT sacrifices configurability for guaranteed zero-delay stability-making SL2309ZI-1HT optimal for EMI-sensitive, thermally demanding, and dynamically reconfigurable clock trees.
Availability
SL2309ZI-1HT is available at Aetrix Electronics and suitable for printers and MFPs, digital copiers, and industrial embedded systems requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for SL2309ZI-1HT 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
Silicon Laboratories Inc. is a U.S.-based fabless semiconductor company specializing in timing, MCU, and connectivity solutions, with design centers in Austin, Boston, and Taipei.
The SL2309 product line delivers low-skew, low-jitter clock distribution for high-speed digital systems-including networking, imaging, and computing platforms-where precise phase alignment and EMI control are critical.
FAQ
What is the maximum operating frequency of SL2309ZI-1HT under industrial temperature conditions?
The SL2309ZI-1HT supports up to 140 MHz at –40°C to +85°C when driving 15 pF loads with high-drive (–1H) configuration. At 30 pF load, the maximum frequency reduces to 100 MHz. These limits are validated per the switching specifications table in the official datasheet Rev 2.0 and apply specifically to the SL2309ZI-1HT variant with TSSOP packaging and industrial-grade qualification.
Does SL2309ZI-1HT support spread-spectrum clocking (SSCG)?
Yes, SL2309ZI-1HT implements SpreadThru™ technology, which passes spread-spectrum modulation-including spread percentage, profile, and modulation frequency-unchanged from CLKIN to all nine outputs. This feature is explicitly confirmed in the General Description section and Figure 1 of the SL2309 datasheet Rev 2.0, and applies directly to the SL2309ZI-1HT part number.
How does the S1/S2 pin configuration affect SL2309ZI-1HT functionality?
S1 (Pin 9) and S2 (Pin 8) configure four operational modes: (0,0) disables both banks and drives only CLKOUT; (0,1) enables Bank A only; (1,0) enables both banks in bypass mode (no PLL); (1,1) enables all outputs with PLL active. This decoding table is defined in Table 2 (page 4) of the SL2309 datasheet Rev 2.0 and is functionally identical across all SL2309 variants including SL2309ZI-1HT.
What is the power consumption of SL2309ZI-1HT at 133 MHz?
At 133 MHz with all outputs active and CL = 0, SL2309ZI-1HT draws ≤44 mA (typical 44 mA), corresponding to ~145 mW at 3.3 V. This value is specified in the IDD4 parameter (page 6) of the SL2309 datasheet Rev 2.0 and applies to the –1H high-drive version in industrial-grade TSSOP packaging-exactly matching SL2309ZI-1HT.
Is SL2309ZI-1HT pin-compatible with other SL2309 variants?
Yes, SL2309ZI-1HT shares identical 16-pin TSSOP pinout and electrical behavior with all SL2309 family members-including SL2309ZC-1HT and SL2309BZI-1HT-as confirmed by the unified pin description table (page 2) and package drawings (pages 10–11) in the SL2309 datasheet Rev 2.0. Differences are limited to temperature grade and drive option, not pin assignment or signal function.
SL2309ZI-1HT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Skyworks Solutions Inc.
- Series:
- -
- Package/Case:
- 16-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- -
- PLL:
- Yes with Bypass
- Input:
- Clock
- Output:
- LVCMOS
- Number of Circuits:
- 1
- Ratio - Input:Output:
- 1:9
- Differential - Input:Output:
- No/No
- Frequency - Max:
- 140MHz
- Divider/Multiplier:
- No/No
- Voltage - Supply:
- 3V ~ 3.6V
- Operating Temperature:
- -40°C ~ 85°C
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- 16-TSSOP
SL2309ZI-1HT FAQ
1.How can I place an order for SL2309ZI-1HT through Aetrix?
Please submit a Request for Quotation (RFQ) for SL2309ZI-1HT 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 SL2309ZI-1HT reliable?
The price and inventory of SL2309ZI-1HT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SL2309ZI-1HT is usually 5 days.
3.What payment methods are accepted for SL2309ZI-1HT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SL2309ZI-1HT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SL2309ZI-1HT?
SL2309ZI-1HT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SL2309ZI-1HT 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 SL2309ZI-1HT?
For technical support, including SL2309ZI-1HT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SL2309ZI-1HT requirements.
6.How does Aetrix verify that SL2309ZI-1HT is sourced from the original manufacturer or authorized distributors?
All SL2309ZI-1HT 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 SL2309ZI-1HT meets industry standards.
7.What is the process for return or replacement of SL2309ZI-1HT?
All SL2309ZI-1HT units undergo pre-shipment inspection (PSI). If there is an issue with SL2309ZI-1HT, 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 SL2309ZI-1HT part is unused and in its original packaging.
Return procedure for SL2309ZI-1HT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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