Renesas ICS853L022AMLF

Overview

ICS853L022AMLF 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 3.3V logic inputs and generates two differential 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 ICS853L022AMLF datasheet, ICS853L022AMLF pinout, ICS853L022AMLF application, or ICS853L022AMLF 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 3.3V LVPECL or ECL supply configurations.

Technical Context

The ICS853L022AMLF implements a fully differential LVPECL output stage driven by single-ended LVCMOS/LVTTL clock inputs. Its internal architecture includes matched delay paths per channel to minimize inter-channel skew and supports both LVPECL mode (VCC = 3.0–3.8V, VEE = 0V) and ECL mode (VCC = 0V, VEE = –3.8 to –3.0V).

It delivers rail-to-rail differential swing (≈700mV) into 50Ω loads, requires external termination (e.g., 125Ω pull-up to VCC–2V), and maintains signal integrity via low additive jitter (0.03ps RMS) and tight output rise/fall times (≤150ps). The device is optimized for point-to-point or fanout clock tree topologies in high-speed serial interfaces.

Key Specifications

Pinout & Package

ICS853L022AMLF is housed in an 8-pin TSSOP (G package), 3mm × 3mm × 0.95mm body, lead-free and RoHS compliant. Pin layout matches JEDEC MO-187 standard.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MC100LVELT22DG and NB7L573MNG, the ICS853L022AMLF uniquely balances dual-channel LVPECL translation, 3.3V single-supply flexibility, sub-0.05ps jitter, and proven field reliability in telecom infrastructure-making it optimal for cost-constrained, space-limited, and thermally demanding deployments where two synchronized outputs are required.

Availability

ICS853L022AMLF is available at Aetrix Electronics and suitable for telecom infrastructure, optical transport equipment, and high-speed test instrumentation requiring stable component supply, long-term lifecycle support, and guaranteed RoHS-compliant sourcing.

Supply support for ICS853L022AMLF 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) is a global semiconductor company specializing in timing, memory interface, RF, and sensor solutions, acquired by Renesas Electronics in 2019.

The ICS853L022AMLF belongs to IDT's HiPerClockS™ family-designed specifically for high-performance clock distribution in telecom, datacom, and enterprise networking systems where low jitter, precise skew control, and robust LVPECL drive capability are essential.

FAQ

What is the maximum supported output frequency for ICS853L022AMLF?

The ICS853L022AMLF supports a maximum output frequency of 350MHz under typical conditions, as specified in its AC characteristics table. This rating applies to both LVPECL and ECL operating modes and is validated across the full –40°C to +85°C temperature range with proper termination and layout. The ICS853L022AMLF achieves this while maintaining <0.03ps RMS additive phase jitter and ≤400ps part-to-part skew, making it suitable for SONET OC-48, PCIe Gen1/Gen2, and 10/100/1000BASE-T reference clocking.

Does ICS853L022AMLF support both LVPECL and ECL voltage modes?

Yes, the ICS853L022AMLF supports two distinct supply configurations: LVPECL mode (VCC = 3.0–3.8V, VEE = 0V) and ECL mode (VCC = 0V, VEE = –3.8 to –3.0V). In LVPECL mode, outputs swing between ~2.0V and ~1.3V relative to VEE; in ECL mode, they swing between ~–1.0V and ~–1.7V. Both modes deliver identical timing performance including 450ps typical propagation delay and 0.03ps RMS additive jitter. The ICS853L022AMLF requires no configuration pins-the mode is determined solely by supply connection.

What is the recommended termination network for ICS853L022AMLF LVPECL outputs?

The ICS853L022AMLF LVPECL outputs require DC-coupled termination to maintain signal integrity. For 3.3V LVPECL mode, the recommended configuration is two 125Ω resistors: one from Qx to VCC–2V and one from nQx to VCC–2V, with VCC–2V generated via a resistor divider or LDO. This establishes a common-mode voltage near 1.3V and provides 50Ω differential impedance. The ICS853L022AMLF datasheet specifies that each output pair must drive 50Ω transmission lines, and mismatched termination increases jitter and skew. No AC coupling or on-die termination is supported.

Is ICS853L022AMLF pin-compatible with any industry-standard alternatives?

Yes, the ICS853L022AMLF is pin-compatible with ON Semiconductor's MC100LVELT22 series (e.g., MC100LVELT22DG), sharing identical 8-pin TSSOP pinout, terminal functions, and DC/AC electrical specifications. However, the MC100LVELT22 operates only in ECL mode (VCC = 0V, VEE = –3.3V) and lacks LVPECL mode support. While PCB layout can be reused, supply rail design differs. The ICS853L022AMLF offers greater flexibility for new 3.3V-system designs without negative supply generation.

What thermal considerations apply to ICS853L022AMLF in high-density layouts?

The ICS853L022AMLF has a junction-to-ambient thermal resistance (θJA) of 101.7°C/W for the TSSOP package under still-air conditions on a multi-layer PCB. At maximum load (3.8V supply, both outputs switching), total power dissipation reaches ~176mW, resulting in a worst-case junction temperature of ~101°C at 85°C ambient-well below the 125°C limit. To ensure reliability, use ≥2 thermal vias under the exposed pad (if present), maintain ≥1mm clearance from heat sources, and avoid stacking components directly above the ICS853L022AMLF. Thermal derating is not required within its specified operating range.