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Home > Products > Integrated Circuits (ICs) > Clock/Timing > Clock Buffers, Drivers

Renesas 853S057AGILFT

Name: 853S057AGILFT
Brand: Renesas
SKU: 853S057AGILFT
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: 853S057AGILFT

Manufacturer:: Renesas

Category:: Clock Buffers, Drivers

Package:: 20-TSSOP (0.173", 4.40mm Width)

Datasheet:: 853S057AGILFT.pdf

Description:: IC CLK MULTIPLX 4:1 3GHZ 20TSSOP

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Product details

Overview

853S057AGILFT from Renesas Electronics is a 4:1 differential clock/data multiplexer supporting 3.3V or 2.5V LVPECL/ECL output, with four differential input pairs (CLK0–CLK3/nCLK0–nCLK3), 3GHz maximum frequency, 615ps max propagation delay, and 0.073ps typical additive phase jitter at 622.08MHz - used in high-speed telecom clock distribution and FPGA synchronization.

For engineers reviewing the 853S057AGILFT datasheet, 853S057AGILFT pinout, 853S057AGILFT application, or 853S057AGILFT equivalent, this page delivers verified electrical specs, TSSOP-20 pin mapping, LVPECL/ECL supply configuration details, and real-world timing performance metrics for deterministic clock selection in multi-source systems.

Technical Context

The 853S057AGILFT implements a fully differential 4:1 multiplexer architecture with internal pulldown resistors on all select and clock inputs (51kΩ typical), enabling direct ECL/LVPECL or LVCMOS-level control via SEL0/SEL1. Its dual-mode power supply supports either VCC = 2.375–3.465V / VEE = 0V (LVPECL) or VCC = 0V / VEE = –3.465 to –2.375V (ECL).

It accepts LVPECL, LVDS, CML, and SSTL differential inputs across all four CLKx/nCLKx pairs, with common-mode range of 1.2V to VCC and 0.15–1.3V peak-to-peak input swing. Output termination requires 50Ω to VCC–2V for proper LVPECL operation, and part-to-part skew is guaranteed ≤250ps under matched load conditions.

Key Specifications

Parameter	Value and Actual Design Meaning
Max Frequency	3GHz - supports OC-48/STM-16, 10G Ethernet, and SerDes reference clocking without frequency division.
Additive Phase Jitter	0.073ps RMS (12kHz–20MHz, 622.08MHz carrier) - enables low-BER operation in high-speed serial links.
Propagation Delay	615ps max - ensures sub-nanosecond timing alignment across multiplexed clock paths.
Part-to-Part Skew	250ps max - guarantees tight inter-device synchronization in parallel clock fanout systems.
Supply Range	VCC = 2.375–3.465V / VEE = 0V (LVPECL mode); or VCC = 0V / VEE = –3.465 to –2.375V (ECL mode) - enables interoperability with legacy ECL and modern LVPECL infrastructure.
Input Compatibility	LVPECL, LVDS, CML, SSTL - eliminates need for level-shifting buffers when interfacing with diverse PHYs.
Operating Temp	–40°C to +85°C ambient - qualified for industrial and telecom base station environments.

Pinout & Package

853S057AGILFT is housed in a RoHS-compliant 20-lead TSSOP package (6.5mm × 4.4mm × 0.925mm, 0.65mm pitch, G package). The package supports standard surface-mount reflow and is compatible with JEDEC-standard test boards.

Pin/Terminal	Circuit Role	Design Meaning
1, 14, 17, 20	VCC	Positive supply pins - must be decoupled locally; shared across internal logic and output drivers.
2, 4, 6, 8	CLK0–CLK3	Non-inverting differential clock inputs - accept LVPECL/LVDS/CML/SSTL; internally pulled down.
3, 5, 7, 9	nCLK0–nCLK3	Inverting differential clock inputs - paired with CLKx; same interface compatibility and pull-down.
10, 11	VEE	Negative supply pins - tied to ground in LVPECL mode; to –2.375V to –3.465V in ECL mode.
12, 13	VBB1, VBB2	ECL reference outputs - provide bias voltage (~–1.3V) for external ECL termination networks.
15, 16	Q, nQ	Differential LVPECL/ECL output pair - low-impedance follower; requires 50Ω termination to VCC–2V.
18, 19	SEL0, SEL1	Multiplexer select inputs - ECL/LVPECL or LVCMOS-compatible; internal 51kΩ pulldowns enable default CLK0 selection.

Key Features

Feature	Design Value
4:1 Differential Multiplexing	Enables dynamic switching between four independent high-frequency clock sources without signal degradation or added jitter.
LVPECL/ECL Dual-Mode Operation	Single device supports both 3.3V/2.5V LVPECL and negative-rail ECL systems - reduces BOM count in mixed-voltage designs.
Sub-0.1ps Additive Jitter	Preserves signal integrity in 10G+ serial data paths where jitter accumulation directly impacts bit error rate.
Internal Input Pulldowns	Eliminates need for external bias resistors on SEL0/SEL1 and all CLK/nCLK inputs - simplifies layout and improves noise immunity.
20-Lead TSSOP Footprint	Standardized package enables drop-in replacement in existing clock IC layouts and supports automated assembly.

Applications

Telecom Line Cards	High-Speed FPGA Clocking
Use Scenario: Synchronizing multiple SERDES lanes across redundant OC-192/STM-64 line interfaces with failover capability. IC Role / Device Role / Timing Role: Primary clock selector routing one of four OC-48 reference clocks to a clock buffer tree feeding multiple transceivers. Use Value: 250ps part-to-part skew ensures deterministic phase alignment across hot-swappable line cards, minimizing frame slips during switchover.	Use Scenario: Providing selectable reference clocks to Xilinx Versal or Intel Stratix 10 FPGA banks with different speed grade requirements. IC Role / Device Role / Timing Role: High-fidelity clock multiplexer delivering clean 156.25MHz, 312.5MHz, or 625MHz references to programmable logic and transceiver PLLs. Use Value: 0.073ps additive jitter preserves PLL lock stability and reduces timing margin erosion in multi-GHz I/O channels.
Optical Transport Network (OTN) Switches	Test & Measurement Equipment
Use Scenario: Routing synchronized timing signals between cross-connect ASICs and framer/demapper ICs in 100G/400G OTN switches. IC Role / Device Role / Timing Role: Low-skew clock distributor selecting among primary, backup, and holdover oscillators in a redundant timing architecture. Use Value: 615ps max propagation delay enables precise inter-chip timing budget allocation across large backplane-based systems.	Use Scenario: Generating calibrated clock stimuli for jitter tolerance testing of high-speed receivers per IEEE 802.3bj/802.3cd standards. IC Role / Device Role / Timing Role: Programmable clock source providing variable-frequency, low-jitter outputs for compliance validation of SerDes PHYs. Use Value: 3GHz bandwidth and LVDS/CML input compatibility allow seamless integration with arbitrary waveform generators and pattern generators.

Telecom Line Cards

High-Speed FPGA Clocking

Use Scenario: Synchronizing multiple SERDES lanes across redundant OC-192/STM-64 line interfaces with failover capability.

IC Role / Device Role / Timing Role: Primary clock selector routing one of four OC-48 reference clocks to a clock buffer tree feeding multiple transceivers.

Use Value: 250ps part-to-part skew ensures deterministic phase alignment across hot-swappable line cards, minimizing frame slips during switchover.

Use Scenario: Providing selectable reference clocks to Xilinx Versal or Intel Stratix 10 FPGA banks with different speed grade requirements.

IC Role / Device Role / Timing Role: High-fidelity clock multiplexer delivering clean 156.25MHz, 312.5MHz, or 625MHz references to programmable logic and transceiver PLLs.

Use Value: 0.073ps additive jitter preserves PLL lock stability and reduces timing margin erosion in multi-GHz I/O channels.

Optical Transport Network (OTN) Switches

Test & Measurement Equipment

Use Scenario: Routing synchronized timing signals between cross-connect ASICs and framer/demapper ICs in 100G/400G OTN switches.

IC Role / Device Role / Timing Role: Low-skew clock distributor selecting among primary, backup, and holdover oscillators in a redundant timing architecture.

Use Value: 615ps max propagation delay enables precise inter-chip timing budget allocation across large backplane-based systems.

Use Scenario: Generating calibrated clock stimuli for jitter tolerance testing of high-speed receivers per IEEE 802.3bj/802.3cd standards.

IC Role / Device Role / Timing Role: Programmable clock source providing variable-frequency, low-jitter outputs for compliance validation of SerDes PHYs.

Use Value: 3GHz bandwidth and LVDS/CML input compatibility allow seamless integration with arbitrary waveform generators and pattern generators.

Equivalent & Alternatives

The following parts are listed as comparable options for similar clock multiplexer applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
IDT853S057AGILF	Same silicon die and pinout; differs only in packaging - tube vs. tape-and-reel (853S057AGILFT). Identical electrical specs and thermal behavior.	No functional difference; selected based on production volume and SMT line feed requirements.	Choose 853S057AGILFT for automated pick-and-place; choose IDT853S057AGILF for prototyping or low-volume hand assembly.
Si53302-D05500-GM	Programmable 4:1 mux with integrated jitter cleaner; wider supply range (1.8–3.3V), but lower max frequency (2.1GHz) and no native ECL support.	Suitable for jitter-sensitive applications requiring cleanup, but not for pure high-speed pass-through multiplexing with ECL compatibility.	Select Si53302-D05500-GM only if system-level jitter attenuation is required; retain 853S057AGILFT for minimal-latency, ECL-compatible clock switching.

Compared with IDT853S057AGILF, 853S057AGILFT offers identical performance in tape-and-reel format for volume manufacturing; compared with Si53302-D05500-GM, it provides higher bandwidth and native ECL support at the cost of no on-chip jitter cleaning - making it optimal for deterministic, low-latency clock routing where external jitter filtering is already implemented.

Availability

853S057AGILFT is available at Aetrix Electronics and suitable for telecom infrastructure, high-speed FPGA development, and optical transport network equipment requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant sourcing.

Supply support for 853S057AGILFT 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

Renesas Electronics Corporation is a global semiconductor leader specializing in microcontrollers, analog, power, and timing solutions for automotive, industrial, and communications markets.

The 853S057AGILFT belongs to Renesas' HiPerClockS family - engineered specifically for ultra-low-jitter, high-frequency clock distribution in next-generation wired infrastructure and programmable logic platforms.

FAQ

What supply voltages does the 853S057AGILFT support?

The 853S057AGILFT supports two distinct supply configurations: LVPECL mode uses VCC = 2.375V to 3.465V with VEE = 0V; ECL mode uses VCC = 0V with VEE = –3.465V to –2.375V. Both modes maintain full 3GHz operation and identical AC performance. The 853S057AGILFT datasheet specifies DC characteristics separately for each mode in Tables 4A–4D.

Does the 853S057AGILFT require external pull-up or pull-down resistors on SEL0/SEL1?

No - the 853S057AGILFT integrates 51kΩ internal pulldown resistors on SEL0 and SEL1, ensuring default selection of CLK0/nCLK0 when inputs are undriven. External resistors are unnecessary and may degrade noise margin; Renesas explicitly states "additional resistance is not required" in the datasheet Application Information section.

Can the 853S057AGILFT accept single-ended clock inputs?

Yes - the 853S057AGILFT's differential CLKx/nCLKx inputs can be adapted for single-ended operation using an external bias network (e.g., R1/R2 divider generating VCC/2 at nCLKx), as shown in Figure 1 of the 853S057AGILFT datasheet. This method maintains valid common-mode voltage and meets VPP and VCMR input requirements.

What is the recommended termination for the Q/nQ differential outputs?

The 853S057AGILFT Q/nQ outputs require 50Ω termination to VCC–2V for proper LVPECL operation. Typical implementations use two 84Ω resistors (Figure 3A) or a Thevenin-equivalent network; for 2.5V LVPECL, termination to ground is acceptable since VCC–2V ≈ 0.5V. All termination must be placed close to the output pins per Figures 3A–4C in the 853S057AGILFT datasheet.

Is the 853S057AGILFT pin-compatible with earlier IDT versions?

Yes - the 853S057AGILFT is a Renesas-branded continuation of the IDT 853S057AGI series following the acquisition. It retains identical pinout, electrical specifications, thermal profile, and package dimensions (20-TSSOP, PGG20D1), and is documented as a direct replacement in Renesas' ordering information table.

853S057AGILFT Specifications

Product attributes: Attribute value

Manufacturer:: Renesas

Series:: -

Package/Case:: 20-TSSOP (0.173", 4.40mm Width)

Packaging:: Tape & Reel (TR)

Product Status:: Active

Type:: Multiplexer

Number of Circuits:: 1

Ratio - Input:Output:: 4:1

Differential - Input:Output:: Yes/Yes

Input:: CML, LVDS, LVPECL, SSTL

Output:: ECL, LVPECL

Frequency - Max:: 3 GHz

Voltage - Supply:: 2.375V ~ 3.465V

Operating Temperature:: -40°C ~ 85°C

Mounting Type:: Surface Mount

Grade:: -

Qualification:: -

Supplier Device Package:: 20-TSSOP

853S057AGILFT FAQ

1.How can I place an order for 853S057AGILFT through Aetrix?

Please submit a Request for Quotation (RFQ) for 853S057AGILFT 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 853S057AGILFT reliable?

The price and inventory of 853S057AGILFT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 853S057AGILFT is usually 5 days.

3.What payment methods are accepted for 853S057AGILFT?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 853S057AGILFT transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for 853S057AGILFT?

853S057AGILFT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your 853S057AGILFT 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 853S057AGILFT?

For technical support, including 853S057AGILFT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 853S057AGILFT requirements.

6.How does Aetrix verify that 853S057AGILFT is sourced from the original manufacturer or authorized distributors?

All 853S057AGILFT 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 853S057AGILFT meets industry standards.

7.What is the process for return or replacement of 853S057AGILFT?

All 853S057AGILFT units undergo pre-shipment inspection (PSI). If there is an issue with 853S057AGILFT, 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 853S057AGILFT part is unused and in its original packaging.

Return procedure for 853S057AGILFT:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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