85320AMILF - 1:1 LVCMOS/LVTTL-to-LVPECL Translator | Renesas
부품 번호: 85320AMILF ✓ 활성| 수량 | 단가 | 합계 |
|---|---|---|
| 1 | $6.8 | $6.80 |
| 10 | $6.12 | $61.20 |
| 100 | $5.44 | $544.00 |
| 500 | $4.89 | $2,445.00 |
| 1,000 | $4.35 | $4,350.00 |
85320AMILF 개요
A clock translator (also called a clock level shifter) is a specialized mixed-signal IC that bridges different logic-level signaling standards within a timing distribution network. Common clock standards include LVCMOS, LVTTL, LVPECL, LVDS, HCSL, and CML, each with different voltage swings, common-mode ranges, and jitter budgets. Clock translators sit between a source oscillator/buffer and a downstream load (FPGA, ASIC, serializer, ADC clock input) and preserve edge fidelity while adapting levels.
Key features of the 85320AMILF include additive phase jitter of 0.05 ps RMS (typical), 3.3V operating supply voltage (3.135V to 3.465V range) and 2.5V operating supply voltage (2.375V to 2.625V range). The 8-pin SOIC package is small, surface-mountable, and suitable for compact board layouts where high performance and low power are required.
Architecturally, the device uses a differential LVPECL output stage driven by an internal bias network referenced to VCC. The single-ended input stage accepts LVCMOS/LVTTL swing levels and feeds a limiting amplifier to produce a clean differential output. The low additive jitter (0.05 ps RMS) makes the part suitable for jitter-sensitive serializer/deserializer (SerDes) reference clocks and high-speed ADC/DAC sampling clocks.
Typical applications include telecommunications backplane clock translation, networking line-card timing, FPGA/ASIC reference-clock level shifting, and test-and-measurement instrumentation where a low-jitter LVPECL distribution rail is required. The dual 2.5V/3.3V supply option simplifies designs that interface with mixed-voltage ASICs.
When designing with this device, pay attention to LVPECL termination: each output pair typically requires a 50-ohm termination to VCC-2V (Thevenin-equivalent bias). Unused outputs should be left floating per the datasheet recommendation, not tied to ground. Maintain a clean supply with a 0.1 uF decoupling capacitor close to VCC.
This page synthesizes distributor pricing, drop-in same-package alternatives, and practical termination guidance not found in the standalone datasheet, giving engineers a single reference for sourcing and design-in decisions.
드롭인 대체품: 85320AMILF — 동일 패키지, 핀 호환. PCB 재작업이 필요한 다른 패키지 부품은 제외됩니다.
빠른 비교 도구 — 나란히 비교할 대체 부품을 선택하십시오:
85320AMILFT
✅ 드롭인📋 참조 대체품 (카탈로그에 없음)
ICS85320AMILF
✅ 드롭인📋 참조 대체품 (카탈로그에 없음)
ICS85320AMILFT
✅ 드롭인📋 참조 대체품 (카탈로그에 없음)
85321AMILF
✅ 드롭인📋 참조 대체품 (카탈로그에 없음)
SY87700ALZG
✅ 드롭인📋 참조 대체품 (카탈로그에 없음)
85320AMILF 사양
| 기능 | LVCMOS/LVTTL-to-Differential LVPECL translator |
| Number of Circuits | 1 |
| Number of Channels | 1 |
| Input Type | LVCMOS or LVTTL (single-ended) |
| 출력 유형 | Differential LVPECL |
| Maximum Output Frequency | 267 MHz |
| Part-to-Part Skew | 275 ps (maximum) |
| Additive Phase Jitter (RMS) | 0.05 ps (typical) |
| Supply Voltage 3.3V Mode | 3.135 V to 3.465 V |
| Supply Voltage 2.5V Mode | 2.375 V to 2.625 V |
| 동작 온도 범위 | -40 C to +85 C |
| 패키지 | 8-pin SOIC (150 mil) |
| 실장 유형 | Surface Mount |
| RoHS 상태 | Compliant |
85320AMILF 핀 구성
| 핀 1 | VEE — Negative supply / ground reference |
| 핀 2 | CLK_IN — LVCMOS/LVTTL single-ended clock input |
| 핀 3 | NC — Not connected (per datasheet) |
| 핀 4 | NC — Not connected (per datasheet) |
| 핀 5 | nQ — Differential LVPECL output (inverted) |
| 핀 6 | Q — Differential LVPECL output (true) |
| 핀 7 | VCC — Positive supply (2.5V or 3.3V) |
| 핀 8 | NC — Not connected (per datasheet) |
일반적인 애플리케이션
85320AMILF 적합 용도: 7 애플리케이션s: Telecommunications Backplane Clock Translation, FPGA/ASIC Reference Clock Level Shifting, High-Speed ADC Sampling Clock Driver, Networking Switch Clock Distribution, Test and Measurement Instrumentation, Industrial Control and Factory Automation, Medical Imaging and Diagnostic Equipment.
Telecommunications Backplane Clock Translation
The 85320AMILF is well suited for telecom backplane clock translation where a local oscillator's LVCMOS/LVTTL output must drive LVPECL-input line cards across a backplane. Its 267 MHz maximum output frequency covers common telecom reference clocks (e.g. 19.44 MHz, 77.76 MHz, 155.52 MHz derivatives) used in SONET/SDH and OTN line-card designs. The 0.05 ps RMS additive phase jitter ensures the translator contributes negligible degradation to the upstream TCXO or OCXO jitter budget, preserving the system's wander and jitter compliance masks per ITU-T G.8251. The 8-pin SOIC package is footprint-compatible with most telecom PHY reference schematics, allowing straightforward design-in.
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FPGA/ASIC Reference Clock Level Shifting
The 85320AMILF is ideal for translating an LVCMOS oscillator output to the LVPECL reference-clock input of an FPGA, ASIC, or high-speed serializer/deserializer (SerDes). Many Xilinx, Intel (Altera), and Microchip FPGA families accept LVPECL on dedicated clock input pins, and the 85320AMILF's 275 ps maximum part-to-part skew ensures deterministic phase alignment when multiple boards share a common reference. Designers place the translator adjacent to the FPGA clock pin and provide Thevenin-equivalent 50-ohm termination to VCC-2V on both outputs (Q and nQ) for proper LVPECL biasing.
추천
High-Speed ADC Sampling Clock Driver
The 85320AMILF is appropriate for delivering a clean LVPECL sampling clock to a high-speed ADC in test-and-measurement or communications receiver designs. The 0.05 ps RMS typical additive phase jitter is small relative to the aperture jitter of mid-speed pipeline ADCs, ensuring the SNR is dominated by the ADC's intrinsic jitter rather than the clock translator. The 267 MHz maximum frequency accommodates ADC clock rates up to approximately 250 MHz in real designs. Termination follows standard LVPECL practice: 50 ohms to VCC-2V at the ADC clock input, with trace length matched between Q and nQ.
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Networking Switch Clock Distribution
The 85320AMILF serves as a level translator in networking switch and router clock-distribution trees where a central LVCMOS oscillator fans out to multiple LVPECL-input PHY or switch ASIC devices. Its 1:1 single-input single-output architecture ideal for point-to-point translation along a clock spine. The 2.5V or 3.3V dual-supply option accommodates designs that mix legacy 2.5V PHY interfaces with newer 3.3V switch ASICs. Designers should observe the 275 ps maximum part-to-part skew when fanning out to multiple boards through separate translator instances, ensuring deterministic phase alignment in synchronous Ethernet or PTP-derived timing chains.
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Test and Measurement Instrumentation
The 85320AMILF is used in test-and-measurement instruments such as oscilloscope timebases, signal-generator reference paths, and protocol-analyzer clock trees. Its 267 MHz bandwidth covers reference frequencies up to 250 MHz used in common laboratory instruments, while the low 0.05 ps RMS additive phase jitter preserves the integrity of the instrument's own jitter floor. The 8-pin SOIC package eases retrofits into existing instrument reference-clock boards. Designers should place a 0.1 uF decoupling capacitor within 3 mm of the VCC pin and provide proper LVPECL biasing for the differential outputs.
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Industrial Control and Factory Automation
The 85320AMILF suits industrial control applications requiring LVPECL clock distribution in noisy factory environments. Its -40 C to +85 C industrial operating temperature range covers typical cabinet and shop-floor conditions, and the 8-pin SOIC surface-mount package withstands standard reflow profiles. The 0.05 ps RMS additive jitter is negligible compared to industrial sensor and motor-control clock requirements. Designers pair the translator with industrial MCUs and PLC backplanes, where the LVPECL output drives high-speed encoder counters or motion-control timing ASICs across shielded cabling.
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Medical Imaging and Diagnostic Equipment
The 85320AMILF is appropriate for medical imaging systems such as ultrasound transducers and MRI gradient controllers that require low-jitter LVPECL clocks for high-resolution sampling. Its 0.05 ps RMS additive phase jitter ensures the clock translator does not degrade the SNR of sensitive analog front-ends, while the 267 MHz maximum frequency accommodates high-channel-count ultrasound beamformer clocks. The 8-pin SOIC footprint allows integration on compact medical-imaging PCBs where board real estate is constrained. Designers should observe medical EMC standards and provide proper shielding around the translator in noise-sensitive analog chains.
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추천 제품 요약
엔지니어링 참조 데이터: 85320AMILF — 비교, 설계 지침 및 규정 준수 정보.
선택 가이드
대체품과의 비교
| 파라미터 | 이 제품 | 85320AMILFT | ICS85320AMILF | ICS85320AMILFT | 85321AMILF | SY87700ALZG |
|---|---|---|---|---|---|---|
| Package | 8-pin SOIC (150 mil) | 8-pin SOIC (150 mil) - same | 8-pin SOIC (150 mil) - same | 8-pin SOIC (150 mil) - same | 8-pin SOIC (150 mil) - same | 8-pin SOIC (150 mil) - same |
| Brand | Renesas Electronics | Renesas Electronics | Renesas Electronics (legacy IDT) | Renesas Electronics (legacy IDT) | Renesas Electronics | Microchip Technology |
| Function | LVCMOS/LVTTL-to-Diff LVPECL | LVCMOS/LVTTL-to-Diff LVPECL | LVCMOS/LVTTL-to-Diff LVPECL | LVCMOS/LVTTL-to-Diff LVPECL | LVCMOS/LVTTL-to-Diff LVPECL | LVCMOS/LVTTL-to-LVPECL |
| Supply Voltage | 2.5V or 3.3V | 2.5V or 3.3V | 2.5V or 3.3V | 2.5V or 3.3V | 2.5V or 3.3V | 3.3V (typical) |
| Operating Temperature | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C (industrial) |
| Packaging Media | Tube (F suffix) | Tape & Reel (T suffix) | Tube | Tape & Reel | Tube | Tube |
주요 차별점
- Dual 2.5V/3.3V supply operation in a single 8-pin SOIC (vs SY87700ALZG)
- Low additive phase jitter (0.05 ps RMS typical) (vs ICS85320AMILF)
- Compact 8-pin SOIC footprint with 267 MHz bandwidth (vs 85321AMILF)
설계 노트
LVPECL outputs require Thevenin-equivalent 50-ohm termination to VCC-2V on both Q and nQ traces. Use two resistors per output (typically 130 ohms to VCC and 82 ohms to VEE) placed within 3 mm of the translator output pins. Trace lengths for Q and nQ must be matched to within 5 mm to preserve differential symmetry and minimize common-mode noise conversion.
Place a 0.1 uF ceramic decoupling capacitor within 3 mm of the VCC pin (pin 7) and a 10 uF bulk capacitor adjacent to the part. For multi-translator boards, dedicate a separate LVPECL-supply plane or island to avoid coupling digital switching noise into the analog clock domain. The 85320AMILF draws approximately 30 mA typical from VCC at 3.3V.
Maintain a continuous reference plane under the LVPECL output traces (typically a ground or VCC-2V plane) to control differential impedance at 100 ohms. Avoid routing LVPECL traces across plane splits or near noisy digital signals. When transitioning to a connector or backplane, use a controlled-impedance stripline or microstrip with 50-ohm single-ended / 100-ohm differential impedance.
Do not leave the LVPECL outputs floating when unused - they will oscillate and inject noise into the supply rail. Do not tie unused outputs directly to ground; instead, leave them open per datasheet recommendation or terminate them with the Thevenin network. Also avoid driving the LVCMOS input with a slow-edge signal (>2 ns rise time), as this can increase additive jitter.
규정 준수 정보
RoHS and lead-free compliance per Renesas product page. Not AEC-Q100 qualified - this part targets commercial/industrial clock tree applications, not automotive.
