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Skyworks Solutions Inc. SL2309ZC-1T
- Part No.:
- SL2309ZC-1T
- Manufacturer:
- Skyworks Solutions Inc.
- Package:
- 16-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
SL2309ZC-1T.pdf
- Description:
- IC BUFFER 140MHZ 9CH3.3V 16TSSOP
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
SL2309ZC-1T from Silicon Laboratories is a 16-pin TSSOP zero-delay buffer (ZDB) IC with integrated SpreadThru™ PLL, delivering up to nine synchronized clock outputs from a single reference input. It operates from 10–140 MHz (high-drive mode), achieves ≤140 ps cycle-to-cycle jitter, ≤150 ps output-to-output skew, and draws ≤44 mA at 133 MHz - used in high-speed clock distribution for printers, DTV, and network switches.
For engineers reviewing the SL2309ZC-1T datasheet, SL2309ZC-1T pinout, SL2309ZC-1T application, or SL2309ZC-1T equivalent, key selection criteria include its 3.3 V supply, dual-bank (4+4+1) output architecture, S1/S2-selectable PLL bypass or tri-state modes, and compatibility with spread-spectrum clocking (SSCG) inputs.
Technical Context
The SL2309ZC-1T implements an on-chip PLL that locks to CLKIN and uses internal feedback from CLKOUT to achieve zero input-to-output delay. Its two independent clock driver banks (A and B) each provide four outputs, plus one dedicated CLKOUT feedback output - all driven synchronously with sub-220 ps input-to-output delay variation in PLL mode.
Control logic interprets S1 and S2 pin states to enable PLL bypass (S2=1, S1=0), full bank tri-state (S2=0, S1=0), or dual-bank active operation (S2=1, S1=1). The device supports load-dependent frequency scaling: 140 MHz max at 15 pF CL with high-drive (-1H) configuration, confirmed for the SL2309ZC-1T variant per ordering table footnote [4].
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Operating Frequency | 10–140 MHz (high-drive mode); enables timing-critical systems like 133 MHz PCI-X clock trees. |
| Cycle-to-Cycle Jitter | ≤140 ps max at 66 MHz, CL=15 pF, -1H drive - ensures stable setup/hold margins in high-speed interfaces. |
| Output-to-Output Skew | ≤150 ps max across all nine outputs - critical for synchronous multi-lane data capture (e.g., DDR memory clocks). |
| Supply Voltage | 3.3 V ±10% - compatible with standard LVTTL/LVCMOS I/O domains without level-shifting. |
| Power Consumption | ≤44 mA at 133 MHz - enables low-thermal footprint in dense PCB layouts with multiple clock domains. |
| Package | 16-pin TSSOP (4.4 mm wide) - surface-mount compatible with automated assembly and 0.65 mm pitch routing. |
| Temperature Range | 0°C to +70°C (Commercial grade) - validated for office equipment and consumer electronics environments. |
Pinout & Package
SL2309ZC-1T is housed in a 16-pin TSSOP package (4.4 mm body width, 0.65 mm lead pitch) with exposed thermal pad not electrically connected. Pin 1 is marked by a notch or dot; pins are numbered counterclockwise starting from top-left corner.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CLKIN (Pin 1) | Reference clock input | Weak internal 250 kΩ pull-down; accepts DC–140 MHz CMOS-level signal; triggers power-down if floating or static. |
| CLKA1–CLKA4 (Pins 2–3,14–15) | Bank A clock outputs | Four buffered outputs; individually controllable via S1/S2; weak 250 kΩ pull-down when tri-stated. |
| CLKB1–CLKB4 (Pins 6–7,10–11) | Bank B clock outputs | Four buffered outputs; independent of Bank A; same drive strength and loading rules apply. |
| CLKOUT (Pin 16) | PLL feedback output | Internal PLL reference node; must match load capacitance of Bank A/B outputs to maintain zero delay. |
| S1 (Pin 9), S2 (Pin 8) | Mode select inputs | Weak 250 kΩ pull-up to VDD; decode into four functional states including PLL bypass and full tri-state. |
| VDD (Pins 4,13), GND (Pins 5,12) | Power terminals | Dual VDD/GND pairs reduce switching noise; require local 0.1 µF ceramic decoupling per VDD pin. |
Key Features
| Feature | Design Value |
|---|---|
| SpreadThru™ PLL architecture | Passes spread-spectrum modulation (SSCG) from input to all nine outputs without degradation in spread % or profile - reduces EMI in FCC/CE-compliant systems. |
| Select-mode PLL bypass | Configurable via S1/S2 to disable PLL and route CLKIN directly to outputs - eliminates lock time and supports DC–140 MHz operation without phase alignment. |
| Dual-bank tri-state control | Independent enable/disable of Bank A or B using S1/S2 - cuts dynamic power by >50% when only four outputs are needed. |
| Load-matched zero-delay tuning | Adjusting CLKOUT load capacitance relative to Bank A/B loads fine-tunes input-to-output delay - enables precise skew compensation in multi-ASIC clock trees. |
| Low-power shutdown detection | Auto-enters <12 µA sleep mode if CLKIN is DC or floating - prevents spurious output toggling and system-level timing faults. |
Applications
| Printers & MFPs | Digital TVs (DTV) |
|---|---|
|
Use Scenario: Synchronizing image processing ASIC, memory controller, and video encoder clocks in multifunction peripherals. IC Role / Device Role / Timing Role: Zero-delay clock fanout buffer distributing a master pixel clock across three subsystems with matched skew. Use Value: Ensures frame-aligned data transfers between scan engine, rasterizer, and print head drivers - eliminating visible banding artifacts. |
Use Scenario: Driving HDMI transmitter, video decoder, and DDR2 memory clocks from a single crystal oscillator in flat-panel displays. IC Role / Device Role / Timing Role: High-drive ZDB providing nine low-jitter clocks with <150 ps inter-output skew for parallel video bus timing. Use Value: Maintains pixel-clock integrity across 1080p60 video pipeline - preventing color fringing and horizontal tearing during motion. |
| Routers & Switches | PCs & Workstations |
|
Use Scenario: Distributing 125 MHz SerDes reference clocks to multiple PHYs and switch fabric controllers in Layer-3 enterprise routers. IC Role / Device Role / Timing Role: Spread-spectrum-capable ZDB enabling EMI reduction while preserving jitter performance for 10GBase-KR compliance. Use Value: Meets FCC Class B radiated emissions limits without external filtering - reducing BOM cost and board area. |
Use Scenario: Fanout of 100 MHz front-side bus (FSB) clock to CPU, northbridge, and memory controller in desktop motherboards. IC Role / Device Role / Timing Role: Dual-bank ZDB operating in PLL-enabled mode to deliver matched-phase clocks with <220 ps input-to-output delay variation. Use Value: Guarantees synchronous sampling across FSB data/address lines - enabling stable 800 MT/s transfer rates. |
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, 10–200 MHz; no spread-spectrum pass-through; higher 200 ps max cycle jitter. | Lacks SpreadThru™; requires external SSCG filtering for EMI-sensitive designs. | Choose when wider frequency range (200 MHz) outweighs SSCG support and lower jitter requirements. |
| ICS8302AM-01LFT | 9-output, 3.3 V, 10–133 MHz; fixed PLL-only operation; no S1/S2 bypass mode; 180 ps max output skew. | No tri-state or PLL-bypass capability - limits power optimization in partial-load configurations. | Prefer when design requires guaranteed PLL lock and avoids manual mode control complexity. |
Compared with SL2309ZC-1T, IDT5V9885BGI offers broader bandwidth but sacrifices SSCG transparency and jitter performance, while ICS8302AM-01LFT provides tighter production lot skew control but eliminates runtime power-saving modes - making SL2309ZC-1T optimal for EMI-constrained, dynamically loaded systems.
Availability
SL2309ZC-1T is available at Aetrix Electronics and suitable for printers and MFPs, digital TVs, and network infrastructure equipment requiring stable component supply and legacy timing solution continuity.
Supply support for SL2309ZC-1T 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 wireless ICs, with design centers in Austin, TX and global sales offices.
The SL2309 product line delivers low-skew, low-jitter clock distribution for high-speed digital systems - engineered specifically for cost-sensitive, space-constrained applications like office peripherals and consumer AV equipment.
FAQ
What is the maximum operating frequency of the SL2309ZC-1T under standard drive conditions?
The SL2309ZC-1T supports up to 100 MHz with standard drive (-1) at 15 pF load, and 66 MHz at 30 pF load. These limits are defined in Table 1 of the datasheet and apply to both PLL-enabled and bypass modes. The SL2309ZC-1T variant is specified for commercial temperature range (0°C to +70°C) and uses the TSSOP package, consistent with its ordering number suffix.
Does the SL2309ZC-1T support spread-spectrum clocking (SSCG) inputs?
Yes, the SL2309ZC-1T implements SpreadThru™ technology, which passes the exact spread percentage, modulation frequency, and profile from CLKIN to all nine outputs without distortion. This feature is explicitly confirmed in the "SpreadThru™ Feature" section (Page 3) and applies to the SL2309ZC-1T as a member of the SL2309 family with -1H/-1 drive options.
How does the S1 and S2 pin configuration affect SL2309ZC-1T operation?
S1 (Pin 9) and S2 (Pin 8) control four functional states: (0,0) tri-states Banks A/B and drives CLKOUT; (0,1) enables Bank A only; (1,0) bypasses PLL and drives all outputs from CLKIN; (1,1) enables full PLL operation. Each state is electrically verified in Table 2 (Page 4), and the SL2309ZC-1T implements this decoding logic identically to the base SL2309 specification.
What is the power consumption of SL2309ZC-1T at 66 MHz?
At 66 MHz with all outputs active and CL = 0, the SL2309ZC-1T draws ≤26 mA (IDD2 parameter, Page 6). This value is measured under standard conditions (VDD = 3.3 V ±10%, S2=S1=1) and reflects typical commercial-grade operation - consistent across all SL2309 variants sharing the -1 drive option and TSSOP packaging.
Is SL2309ZC-1T pin-compatible with other SL2309 variants?
Yes, all SL2309 variants - including SL2309ZC-1T, SL2309ZC-1H, and SL2309BZC-1HT - share identical 16-pin TSSOP pinout and electrical interface. Differences are limited to drive strength (-1 vs. -1H), temperature grade (C vs. I), and packaging (tube vs. tape-and-reel); the SL2309ZC-1T uses standard drive and commercial temperature rating.
SL2309ZC-1T 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:
- 0°C ~ 70°C
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- 16-TSSOP
SL2309ZC-1T FAQ
1.How can I place an order for SL2309ZC-1T through Aetrix?
Please submit a Request for Quotation (RFQ) for SL2309ZC-1T 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 SL2309ZC-1T reliable?
The price and inventory of SL2309ZC-1T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SL2309ZC-1T is usually 5 days.
3.What payment methods are accepted for SL2309ZC-1T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SL2309ZC-1T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SL2309ZC-1T?
SL2309ZC-1T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SL2309ZC-1T 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 SL2309ZC-1T?
For technical support, including SL2309ZC-1T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SL2309ZC-1T requirements.
6.How does Aetrix verify that SL2309ZC-1T is sourced from the original manufacturer or authorized distributors?
All SL2309ZC-1T 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 SL2309ZC-1T meets industry standards.
7.What is the process for return or replacement of SL2309ZC-1T?
All SL2309ZC-1T units undergo pre-shipment inspection (PSI). If there is an issue with SL2309ZC-1T, 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 SL2309ZC-1T part is unused and in its original packaging.
Return procedure for SL2309ZC-1T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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