Renesas ICS853L022AGLFT

Overview

ICS853L022AG from Integrated Circuit Systems is a dual-channel LVCMOS/LVTTL-to-LVPECL clock translator operating at 3.3V supply, delivering two differential LVPECL output pairs (Q0/nQ0 and Q1/nQ1), supporting up to 350MHz output frequency, with typical propagation delay of 450ps and additive phase jitter of 0.03ps RMS - used in high-speed FPGA clock distribution and telecom line-card timing interfaces.

For engineers reviewing the ICS853L022AG datasheet, ICS853L022AG pinout, ICS853L022AG application, or ICS853L022AG equivalent, key selection criteria include single-ended input compatibility (LVCMOS/LVTTL), LVPECL output drive capability, part-to-part skew ≤400ps, thermal performance in TSSOP-8, and dual-output channel isolation for multi-clock domain synchronization.

Technical Context

The ICS853L022AG implements two independent translation channels, each accepting LVCMOS/LVTTL logic-level inputs (D0/D1) and generating complementary LVPECL outputs (Q0/nQ0, Q1/nQ1) referenced to VCC = 3.0–3.8V and VEE = 0V. It supports both LVPECL and ECL modes via configurable supply rails.

Each output pair drives 50Ω transmission lines with controlled rise/fall times (20%–80% <550ps), operates across –40°C to +85°C ambient, and maintains <0.03ps RMS additive phase jitter - critical for low-noise SerDes clocking and jitter-sensitive PLL reference distribution.

Key Specifications

Pinout & Package

ICS853L022AG is housed in an 8-pin TSSOP package (G suffix), 3mm × 3mm × 0.95mm body, JEDEC MO-187 compliant, with exposed pad not present. Thermal resistance θJA = 101.7°C/W (still air, multilayer PCB).

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 ONET1131PWR, the ICS853L022AG uniquely balances dual-channel integration, ultra-low jitter (0.03ps), and native LVCMOS/LVTTL input compatibility in a compact TSSOP-8 - making it optimal for space-constrained, jitter-critical clock distribution where pin compatibility and thermal efficiency matter.

Availability

ICS853L022AG is available at Aetrix Electronics and suitable for high-speed FPGA clock distribution, telecom line-card timing, PCIe reference clock generation, and industrial Ethernet synchronization requiring stable component supply and long-term manufacturability.

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 Circuit Systems (ICS), now part of IDT (Renesas), specialized in high-performance clock generation, distribution, and translation ICs before acquisition in 2019.

The HiPerClockS™ family - including ICS853L022AG - was engineered for low-jitter, multi-channel clock translation in telecom infrastructure, data center switches, and high-end computing platforms demanding sub-picosecond timing fidelity.

FAQ

What is the maximum supported output frequency for ICS853L022AG?

The ICS853L022AG supports a maximum output frequency of 350MHz, as specified in Table 3 of its datasheet under AC Characteristics. This rating applies across the full operating temperature range (–40°C to +85°C) and supply voltage range (VCC = 3.0V to 3.8V). The device maintains signal integrity at this rate due to controlled rise/fall times (<550ps) and low additive jitter (0.03ps RMS), making ICS853L022AG suitable for PCIe Gen1/Gen2 reference clocks and SONET OC-3 timing.

Does ICS853L022AG require external termination resistors?

Yes, ICS853L022AG requires external DC-coupled termination for proper LVPECL output operation. Each differential pair (Q0/nQ0 and Q1/nQ1) must be terminated to VCC–2V using two 50Ω resistors - one from Qx to VCC–2V and one from nQx to VCC–2V - as shown in Figure 1A of the datasheet. This establishes the correct common-mode voltage (~1.3V) and ensures 50Ω characteristic impedance matching for minimal reflections on PCB traces.

Is ICS853L022AG pin-compatible with any other clock translators?

Yes, ICS853L022AG is explicitly documented as pin-compatible with the MC100LVELT22 series (e.g., MC100LVELT22DG), sharing identical 8-pin TSSOP pinout, terminal functions, and electrical behavior. This compatibility enables direct replacement in existing designs without PCB modification. However, users should verify jitter performance (ICS853L022AG: 0.03ps RMS vs. MC100LVELT22: ~0.05ps RMS) and thermal derating if operating near maximum ambient limits.

What supply voltage configurations does ICS853L022AG support?

ICS853L022AG supports two distinct supply configurations: LVPECL mode (VCC = 3.0V–3.8V, VEE = 0V) and ECL mode (VCC = 0V, VEE = –3.8V to –3.0V). Most applications use LVPECL mode with a single 3.3V rail. The ECL mode is rarely used in modern designs due to negative supply complexity. Both modes maintain the same 350MHz frequency capability and functional pin behavior, but DC characteristics (e.g., VOH/VOL levels) differ per Table 2C and 2D.

How is thermal performance characterized for ICS853L022AG in TSSOP-8 package?

Thermal performance of ICS853L022AG in the G-suffix TSSOP-8 package is quantified by junction-to-ambient thermal resistance θJA = 101.7°C/W under still-air conditions on a multilayer PCB (JEDEC Std. Test Board). At worst-case power dissipation (175.88mW, VCC = 3.8V, all outputs switching), junction temperature reaches ~100.9°C at 85°C ambient - safely below the 125°C maximum limit. This confirms robust thermal headroom for industrial applications without forced airflow.