Renesas ICS853L022AGLF

Overview

ICS853L022AG from Integrated Device Technology (IDT, formerly ICS) is a dual-channel LVCMOS/LVTTL-to-LVPECL clock translator IC used for high-speed clock distribution in telecom and datacom systems. It accepts single-ended LVCMOS/LVTTL inputs and generates two differential 3.3V LVPECL output pairs (Q0/nQ0, Q1/nQ1), supports up to 350MHz output frequency, features 450ps typical propagation delay, and operates across –40°C to +85°C.

For engineers reviewing the ICS853L022AG datasheet, ICS853L022AG pinout, ICS853L022AG application, or ICS853L022AG equivalent, key selection criteria include LVPECL output drive capability, part-to-part skew ≤400ps, additive phase jitter of 0.03ps RMS, dual-output timing integrity, and compatibility with 3.0–3.8V LVPECL or –3.8––3.0V ECL supply configurations.

Technical Context

The ICS853L022AG implements a fully differential LVPECL output stage with internal termination reference at VCC – 2V, requiring external 50Ω transmission line matching. Its input stage accepts standard LVCMOS/LVTTL logic levels (VIH ≥ 2.0V, VIL ≤ 0.8V at VCC = 3.3V) and is compatible with both LVPECL (VEE = 0V) and ECL (VCC = 0V) supply modes.

It delivers deterministic timing behavior: propagation delay is 450ps typical with ±50ps variation over temperature and voltage, part-to-part skew is guaranteed ≤400ps, and output rise/fall times are ≤150ps under 20%–80% conditions. The device uses a current-mode logic (CML)-compatible output architecture optimized for low-jitter clock forwarding.

Key Specifications

Pinout & Package

ICS853L022AG is available in an 8-pin TSSOP (G package, 3mm × 3mm × 0.95mm) and 8-pin SOIC (M package). Both packages support lead-free RoHS compliance and share identical pin functions.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar LVCMOS/LVTTL-to-LVPECL translation applications.

Compared with MC100LVELT22DG and SY100ELT22ZG, the ICS853L022AG offers the lowest additive phase jitter (0.03ps RMS) and lowest typical supply current (30mA), making it optimal for jitter-sensitive, power-constrained telecom clock trees where thermal envelope is within industrial range.

Availability

ICS853L022AG is available at Aetrix Electronics and suitable for telecom infrastructure, network switch fabric, optical transport module, and high-speed test equipment applications requiring stable component supply, long-term lifecycle support, and RoHS-compliant sourcing.

Supply support for ICS853L022AG 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

Integrated Device Technology (IDT) - acquired by Renesas in 2019 - is a fabless semiconductor company specializing in timing, memory interface, RF, and sensor solutions for communications, computing, and industrial markets.

The ICS853L022AG belongs to IDT's HiPerClockS™ family, engineered specifically for high-performance clock distribution in telecom and datacom systems where low skew, low jitter, and dual-channel flexibility are critical.

FAQ

What is the maximum operating frequency supported by the ICS853L022AG?

The ICS853L022AG supports a maximum output frequency of 350 MHz, verified under AC characteristics testing per the datasheet (Table 3). This rating applies to both LVPECL and ECL supply modes and is specified across the full –40°C to +85°C temperature range with VCC = 3.0–3.8V or VEE = –3.8––3.0V. Operation beyond 350 MHz may result in degraded signal integrity or timing violations.

Does the ICS853L022AG require external termination resistors?

Yes, the ICS853L022AG requires external termination to maintain signal integrity. Its LVPECL outputs are designed to drive 50Ω transmission lines and must be terminated either with a 125Ω resistor to VCC – 2V (Figure 1A) or dual 84Ω resistors (Figure 1B), as specified in the application information section. Without proper termination, output waveform distortion, overshoot, and timing errors will occur.

Can the ICS853L022AG operate in both LVPECL and ECL modes simultaneously?

No, the ICS853L022AG cannot operate in both modes simultaneously. It supports two mutually exclusive supply configurations: LVPECL mode (VCC = 3.0–3.8V, VEE = 0V) or ECL mode (VCC = 0V, VEE = –3.8––3.0V). The internal biasing and output stage are configured based on which supply rail is active; mixing rails risks damage or undefined behavior.

What is the meaning of "additive phase jitter" for the ICS853L022AG?

Additive phase jitter refers to the RMS jitter introduced solely by the ICS853L022AG during clock translation - measured as 0.03ps typical in the datasheet (Table 3). It quantifies how much timing uncertainty the device adds to an ideal input clock, independent of input jitter. This value is critical for cascaded clock trees where jitter accumulates across multiple stages.

Is the ICS853L022AG pin-compatible with other members of the HiPerClockS™ family?

The ICS853L022AG is pin-compatible with the MC100LVELT22DG, as explicitly stated in the reliability section of the datasheet. However, it is not universally pin-compatible across all HiPerClockS™ devices - for example, the ICS853S022AG (single-output variant) uses a different pinout. Always verify pin mapping against the specific device's datasheet before board reuse.