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Home > Products > Integrated Circuits (ICs) > Logic > Translators, Level Shifters

Renesas 85322AMLFT

Name: 85322AMLFT
Brand: Renesas
SKU: 85322AMLFT
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: 85322AMLFT

Manufacturer:: Renesas

Category:: Translators, Level Shifters

Package:

Datasheet:: 85322AMLFT.pdf

Description:: IC TRANSLTR UNIDIRECTIONAL 8SOIC

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Inventory:3,977

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Product details

Overview

The 85322AMLFT from Renesas Electronics (formerly IDT) is a dual-channel LVCMOS/LVTTL-to-LVPECL clock translator supporting both 2.5V and 3.3V LVPECL output levels, with selectable single-ended inputs, 267 MHz max frequency at 3.3V supply, 250 ps part-to-part skew, and operation over 0°C to 70°C ambient temperature - used in high-speed timing interfaces for FPGA clock distribution and telecom line-card synchronization.

For engineers reviewing the 85322AMLFT datasheet, 85322AMLFT pinout, 85322AMLFT application, or 85322AMLFT equivalent, this page delivers verified electrical parameters, SOIC-8 pin mapping, real-world use cases, and validated alternative parts for clock translation in space-constrained, low-skew systems requiring LVPECL compatibility.

Technical Context

The 85322AMLFT implements two independent LVCMOS/LVTTL input receivers with internal pull-up resistors (51 kΩ typical), each driving a matched differential LVPECL output pair terminated to VCC − 2V. It supports dual supply configurations: 3.3V ±5% (3.135–3.465 V) or 2.5V ±5% (2.375–2.625 V), with separate VCC and VEE pins enabling clean separation of logic and termination reference planes.

Its AC performance is defined under load: outputs require 50 Ω termination to VCC − 2V for valid VOH/VOL specification compliance; propagation delay (0.6–1.8 ns at 3.3V) and rise/fall time (300–700 ps) are measured at the differential crossing point relative to VCC/2 input threshold, per JEDEC Standard 65 for skew definition.

Key Specifications

Parameter	Value and Actual Design Meaning
Supply Voltage	3.3V ±5% (3.135–3.465 V) or 2.5V ±5% (2.375–2.625 V); enables interoperability with mixed-voltage system rails.
Max Output Frequency	267 MHz at 3.3V; supports PCIe Gen1/Gen2 reference clocks and SONET/SDH line-rate timing.
Part-to-Part Skew	250 ps maximum; ensures deterministic phase alignment across multiple 85322AMLFT devices in parallel clock fanout.
LVPECL Output Swing	0.65–1.0 V peak-to-peak into 50 Ω to VCC − 2V; meets EIA-644 LVPECL signal integrity requirements.
Input Compatibility	LVCMOS/LVTTL logic levels on CLK0/CLK1; VIH = 2.0 V min (3.3V mode), VIL = 1.3 V max - compatible with FPGA I/O banks and microcontroller GPIOs.
Propagation Delay	0.6–1.8 ns (3.3V); enables sub-nanosecond timing budget allocation in high-speed synchronous designs.
Operating Temperature	0°C to 70°C ambient; qualified for commercial-grade industrial control and networking equipment.

Pinout & Package

85322AMLFT is housed in an 8-pin lead-free SOIC package (M suffix), 3.90 mm × 4.92 mm × 1.37 mm body, compliant with JEDEC MS-012 outline.

Pin/Terminal	Circuit Role	Design Meaning
1, 2 Q0, nQ0	Differential LVPECL output pair	Complementary 2.5V/3.3V LVPECL signals; require 50 Ω termination to VCC − 2V for valid logic levels.
3, 4 Q1, nQ1	Differential LVPECL output pair	Independent second channel; electrically isolated from Q0/nQ0 for dual-clock domain translation.
5 VEE	Negative supply reference	Ground reference for LVPECL output stage; must be connected to system ground or dedicated low-noise return plane.
6 CLK1	LVCMOS/LVTTL clock input	Pull-up enabled (51 kΩ typical); accepts 0–3.465 V inputs; no external bias required.
7 CLK0	LVCMOS/LVTTL clock input	Identical to CLK1; supports asynchronous or synchronized dual-input clock routing.
8 VCC	Positive supply	Primary power rail; supplies core logic and output drivers; decoupling capacitor required near pin.

Key Features

Feature	Design Value
Dual independent LVPECL channels	Enables simultaneous translation of two clock domains without cross-talk or shared timing path dependencies.
Selectable LVCMOS/LVTTL inputs	Eliminates need for external level-shifting circuitry when interfacing with 1.8V/2.5V/3.3V logic families.
Low part-to-part skew (250 ps)	Supports multi-device clock fanout in systems requiring tight inter-device phase alignment (e.g., JESD204B ADC/DAC sync).
Lead-free SOIC-8 package	Meets RoHS Directive 2011/65/EU; compatible with standard surface-mount reflow profiles and automated optical inspection.
Internal input pull-up resistors	51 kΩ typical value simplifies board layout by removing external bias components for unused inputs or open-drain source interfaces.

Applications

High-Speed FPGA Clock Distribution	Telecom Line-Card Synchronization
Use Scenario: Distributing a single-board master clock to multiple FPGA banks with strict skew and jitter requirements. IC Role / Device Role / Timing Role: Translates a 100 MHz LVCMOS system clock into two matched 100 MHz LVPECL outputs for differential clock tree routing. Use Value: 250 ps part-to-part skew ensures deterministic phase relationship between FPGA clock domains, reducing setup/hold margin loss.	Use Scenario: Providing synchronized clocking to multiple SERDES lanes on a 10Gbps line card with backplane trace length variation. IC Role / Device Role / Timing Role: Converts LVTTL reference clocks from a central timing module into LVPECL for low-noise, long-distance transmission over FR4 traces. Use Value: 0.65–1.0 V LVPECL swing maintains signal integrity over >15 cm PCB traces, meeting IEEE 802.3ap jitter budgets.
PCIe Gen1 Reference Clock Fanout	Industrial Ethernet Switch Timing
Use Scenario: Generating two identical 100 MHz PCIe reference clocks from one oscillator for dual-root complex or multi-port endpoint designs. IC Role / Device Role / Timing Role: LVCMOS-to-LVPECL translation with matched propagation delay across both channels to preserve PCIe REFCLK phase alignment. Use Value: Sub-2 ns tPD variation and 267 MHz capability exceed PCIe Gen1 spec (100 MHz ±300 ppm), enabling margin for PVT variation.	Use Scenario: Delivering deterministic clock signals to multiple PHYs and MAC controllers in a ruggedized industrial switch operating at 85°C junction temperature. IC Role / Device Role / Timing Role: Provides robust LVPECL clock translation in environments where voltage ripple and thermal cycling affect timing stability. Use Value: 3.3V supply range (3.135–3.465 V) tolerates industrial power rail droop; 0°C to 70°C rating covers extended commercial temperature envelope.

High-Speed FPGA Clock Distribution

Telecom Line-Card Synchronization

Use Scenario: Distributing a single-board master clock to multiple FPGA banks with strict skew and jitter requirements.

IC Role / Device Role / Timing Role: Translates a 100 MHz LVCMOS system clock into two matched 100 MHz LVPECL outputs for differential clock tree routing.

Use Value: 250 ps part-to-part skew ensures deterministic phase relationship between FPGA clock domains, reducing setup/hold margin loss.

Use Scenario: Providing synchronized clocking to multiple SERDES lanes on a 10Gbps line card with backplane trace length variation.

IC Role / Device Role / Timing Role: Converts LVTTL reference clocks from a central timing module into LVPECL for low-noise, long-distance transmission over FR4 traces.

Use Value: 0.65–1.0 V LVPECL swing maintains signal integrity over >15 cm PCB traces, meeting IEEE 802.3ap jitter budgets.

PCIe Gen1 Reference Clock Fanout

Industrial Ethernet Switch Timing

Use Scenario: Generating two identical 100 MHz PCIe reference clocks from one oscillator for dual-root complex or multi-port endpoint designs.

IC Role / Device Role / Timing Role: LVCMOS-to-LVPECL translation with matched propagation delay across both channels to preserve PCIe REFCLK phase alignment.

Use Value: Sub-2 ns tPD variation and 267 MHz capability exceed PCIe Gen1 spec (100 MHz ±300 ppm), enabling margin for PVT variation.

Use Scenario: Delivering deterministic clock signals to multiple PHYs and MAC controllers in a ruggedized industrial switch operating at 85°C junction temperature.

IC Role / Device Role / Timing Role: Provides robust LVPECL clock translation in environments where voltage ripple and thermal cycling affect timing stability.

Use Value: 3.3V supply range (3.135–3.465 V) tolerates industrial power rail droop; 0°C to 70°C rating covers extended commercial temperature envelope.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
MC100LVEL13DG	Single-channel, 3.3V-only supply, 2 GHz max frequency; ECL-compatible (not LVPECL), requires negative VEE.	Higher-frequency ECL systems with legacy negative-rail infrastructure; not drop-in for 2.5V or dual-channel needs.	Select only if system uses −2.0 V VEE and requires >267 MHz operation with ECL logic families.
SN65LVDS31DR	LVDS output (not LVPECL); 3.3V supply only; no internal pull-ups; 400 Mbps data rate (not clock-focused).	Point-to-point data serialization (e.g., camera interface), not clock distribution; incompatible termination and voltage levels.	Choose only for LVDS-based data links; unsuitable as direct 85322AMLFT replacement due to output standard mismatch.

Compared with MC100LVEL13DG and SN65LVDS31DR, the 85322AMLFT uniquely supports dual-channel LVPECL translation with selectable 2.5V/3.3V operation, internal pull-ups, and guaranteed 250 ps skew - making it optimal for cost-sensitive, space-constrained clock fanout where LVPECL compliance and dual-output determinism are mandatory.

Availability

85322AMLFT is available at Aetrix Electronics and suitable for high-speed FPGA clock distribution, telecom line-card synchronization, PCIe Gen1 reference clock fanout, and industrial Ethernet switch timing requiring stable component supply and RoHS-compliant packaging.

Supply support for 85322AMLFT 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 delivering trusted embedded solutions for automotive, industrial, infrastructure, and IoT applications, formed through the integration of IDT, Intersil, and Renesas' legacy MCU and analog businesses.

The 85322AMLFT belongs to Renesas' high-performance clock translation product line, designed specifically for bridging single-ended logic families to differential signaling standards in timing-critical communication and computing systems.

FAQ

What supply voltages does the 85322AMLFT support?

The 85322AMLFT supports two discrete supply configurations: 3.3V ±5% (3.135–3.465 V) and 2.5V ±5% (2.375–2.625 V). Both modes require connection of VCC to the selected rail and VEE to ground. The device does not support mixed-supply operation - VCC and all internal circuitry must operate at the same nominal voltage. This dual-voltage capability allows direct integration into systems using either 3.3V or 2.5V clock domains without external regulators.

Does the 85322AMLFT require external pull-up or pull-down resistors on CLK0 and CLK1 inputs?

No, the 85322AMLFT includes internal pull-up resistors (51 kΩ typical) on both CLK0 and CLK1 inputs, as confirmed in Table 2 of the datasheet. These resistors eliminate the need for external biasing components when interfacing with open-drain or unterminated clock sources. However, if the driving source has strong drive strength and well-defined logic levels, the internal pull-ups remain inactive but do not impair functionality - they serve only as fail-safe biasing for floating or weakly driven inputs.

What is the correct termination scheme for the LVPECL outputs of the 85322AMLFT?

The 85322AMLFT LVPECL outputs (Q0/nQ0 and Q1/nQ1) must be terminated with 50 Ω resistors connected to VCC − 2V, as specified in Tables 3C and 3F and Figure 2 of the datasheet. This termination establishes the proper common-mode voltage and ensures valid VOH (VCC − 0.9 V min) and VOL (VCC − 1.7 V min) levels. Using 50 Ω to ground or to VCC will result in invalid output logic states and potential signal integrity failure. Matched impedance routing is also required to maintain signal fidelity above 100 MHz.

Can the 85322AMLFT operate at 267 MHz with a 2.5V supply?

No, the 85322AMLFT's maximum output frequency is reduced to 215 MHz when operating at 2.5V ±5%, as explicitly stated in Table 4B of the datasheet. The 267 MHz rating applies only under 3.3V ±5% supply conditions. Attempting to run at 267 MHz with 2.5V supply may cause timing violations, increased jitter, or functional failure. Designers must select the appropriate supply voltage based on required output frequency - 3.3V for ≥250 MHz applications, 2.5V for lower-frequency, lower-power use cases.

Is the 85322AMLFT pin-compatible with other members of the 853xx family, such as the 85312AMLFT?

No, the 85322AMLFT is not pin-compatible with the 85312AMLFT or other variants in the 853xx family. The 85322AMLFT features two differential LVPECL output pairs (Q0/nQ0, Q1/nQ1) and two inputs (CLK0, CLK1), while the 85312AMLFT is a single-output translator with different pin assignments (e.g., only one Q/nQ pair). Pinout differences are confirmed in the "PIN ASSIGNMENT" section and Table 1 of the datasheet - swapping devices without board revision will result in incorrect signal routing and functional failure.

85322AMLFT Specifications

Product attributes: Attribute value

Manufacturer:: Renesas

Series:: -

Package/Case:

Packaging:: Tape & Reel (TR)

Product Status:: Obsolete

Translator Type:: Mixed Signal

Channel Type:: Unidirectional

Number of Circuits:: 1

Channels per Circuit:: 2

Voltage - VCCA:: -

Voltage - VCCB:: -

Input Signal:: LVCMOS, LVTTL

Output Signal:: LVPECL

Output Type:: Differential

Data Rate:: -

Operating Temperature:: 0°C ~ 70°C (TA)

Grade:: -

Qualification:: -

Features:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 8-SOIC (0.154", 3.90mm Width)

85322AMLFT FAQ

1.How can I place an order for 85322AMLFT through Aetrix?

Please submit a Request for Quotation (RFQ) for 85322AMLFT 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 85322AMLFT reliable?

The price and inventory of 85322AMLFT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 85322AMLFT is usually 5 days.

3.What payment methods are accepted for 85322AMLFT?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 85322AMLFT transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for 85322AMLFT?

85322AMLFT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your 85322AMLFT 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 85322AMLFT?

For technical support, including 85322AMLFT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 85322AMLFT requirements.

6.How does Aetrix verify that 85322AMLFT is sourced from the original manufacturer or authorized distributors?

All 85322AMLFT 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 85322AMLFT meets industry standards.

7.What is the process for return or replacement of 85322AMLFT?

All 85322AMLFT units undergo pre-shipment inspection (PSI). If there is an issue with 85322AMLFT, 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 85322AMLFT part is unused and in its original packaging.

Return procedure for 85322AMLFT:

1.Submit a request within 90 days.

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

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