EL1881CSZ-T7 - Video Sync Separator 8-SOIC | Renesas
Артикул: EL1881CSZ-T7 ✓ Активен| Кол-во | Цена за ед. | Итого |
|---|---|---|
| 1 | $3.94 | $3,94 |
| 10 | $3.54 | $35,40 |
| 25 | $3.35 | $83,75 |
| 100 | $2.9 | $290,00 |
| 250 | $2.75 | $687,50 |
| 500 | $2.47 | $1.235,00 |
EL1881CSZ-T7 Обзор
What is a video sync separator? A video sync separator is a type of analog interface IC in the broader family of video processing ICs that slice the synchronization pulses from the composite video waveform, allowing downstream timing circuits to reconstruct line- and field-rate clocks. In the hierarchy video sync separator -> video processing IC -> interface IC -> integrated circuit, these devices sit between the analog video front end and the digital video processor, providing the timing reference that determines where each scan line begins and ends.
Key features of the EL1881CSZ-T7 include a fixed 70 mV sync-tip slicing threshold, support for non-standard video with input amplitudes as low as 0.5 Vp-p, and outputs for composite sync, vertical sync, burst/back porch timing, and odd/even field identification. The fixed slicing level provides stable sync-edge detection even when the input signal amplitude varies, eliminating the need for external slicing adjustment. The IC operates from a single 5 V rail with lower supply current than the industry-standard LM1881, making it suitable for power-sensitive designs.
The EL1881CSZ-T7 is built on a CMOS process that combines analog signal conditioning with the low power consumption typical of CMOS. Its coupling flexibility allows operation with both AC- and DC-coupled video sources, and it extracts timing from non-standard formats that would defeat traditional sync slicers. The device is specified for the commercial operating temperature range and is shipping in production today from authorized Renesas distributors.
Typical applications include broadcast and consumer video equipment, video capture and editing systems, surveillance and security camera signal conditioning, industrial video inspection systems, and legacy analog TV and DVD player signal paths. The EL1881CSZ-T7 is also used in video format converters where the sync must be regenerated for downstream digitizers.
When designing with the EL1881CSZ-T7, AC-couple the video source to the device input and place bypass capacitors close to the supply pin. Ensure that the input signal amplitude is at least 0.5 Vp-p to guarantee valid sync-tip detection. The sync outputs are TTL-compatible and can drive standard digital logic directly without level shifting.
This page synthesizes distributor pricing from Renesas authorized channels, drop-in alternatives including the industry-standard LM1881, and practical design notes that complement - and extend - the manufacturer datasheet.
Аналоги без доработки для EL1881CSZ-T7 — тот же корпус, pin-to-pin совместимость. Компоненты в других корпусах, требующие переработки PCB, исключены.
Инструмент быстрого сравнения — выберите альтернативные компоненты для сравнения бок о бок:
EL1881CSZ
✅ Прямая замена📋 Справочный аналог (нет в каталоге)
EL1881CSZ-T7A
✅ Прямая замена📋 Справочный аналог (нет в каталоге)
EL1881CS-T7
✅ Прямая замена📋 Справочный аналог (нет в каталоге)
LM1881M/NOPB
✅ Прямая замена📋 Справочный аналог (нет в каталоге)
LM1881N/NOPB
✅ Прямая замена📋 Справочный аналог (нет в каталоге)
EL1881CSZ-T7 Характеристики
| Функция | Video Sync Separator |
| Supported Standards | NTSC, PAL, SECAM |
| Sync Tip Slicing Threshold | 70 mV (fixed) |
| Minimum Input Video Amplitude | 0.5 Vp-p |
| Input Coupling | AC or DC |
| Outputs | Composite Sync, Vertical Sync, Burst/Back Porch Timing, Odd/Even Field |
| Output Logic Levels | TTL-compatible |
| Корпус | 8-SOIC (0.154" / 3.90 mm) |
| Тип монтажа | Surface Mount |
| Shipping Format | Tape & Reel (T7 suffix) |
| Статус RoHS | Compliant (ROHS3 per distributor listing) |
| Lead-Free | Yes |
| Manufacturing Process | High-performance analog CMOS |
| Manufacturer | Renesas Electronics (formerly Elantec/Intersil) |
Конфигурация выводов EL1881CSZ-T7
| Контакт 1 | Video In — Composite video input (AC or DC coupled) |
| Контакт 2 | VCC — Positive supply voltage |
| Контакт 3 | GND — Ground |
| Контакт 4 | Comp Sync — Composite sync output (TTL) |
| Контакт 5 | Vert Sync — Vertical sync output (TTL) |
| Контакт 6 | Burst/Back Porch — Burst/back porch timing output (TTL) |
| Контакт 7 | Odd/Even — Odd/even field detection output (TTL) |
| Контакт 8 | NC — Not connected (per datasheet) |
Типичное применение
EL1881CSZ-T7 подходит для 6 применениеs: Broadcast Video Equipment, Surveillance and Security Camera Signal Conditioning, Video Capture and Editing Systems, Industrial Video Inspection Systems, Legacy Analog TV and DVD Player Signal Paths, Video Format Converters.
Broadcast Video Equipment
The EL1881CSZ-T7 fits broadcast video equipment because it extracts sync timing from NTSC, PAL, and SECAM composite video at standard 1 Vp-p amplitude with the fixed 70 mV sync-tip slicing threshold specified by the Renesas datasheet. Its CMOS process and 5V operation make it suitable for studio signal distribution amplifiers, video routers, and broadcast monitoring gear where reliable sync regeneration prevents downstream display artifacts. The TTL-compatible outputs drive standard digital sync processing ASICs directly.
Рекомендуется
Surveillance and Security Camera Signal Conditioning
The EL1881CSZ-T7 fits surveillance camera signal conditioning through its ability to handle non-standard video down to 0.5 Vp-p input amplitude - critical when long coaxial runs attenuate the sync pulse. The fixed 70 mV slicing threshold extracts stable sync even from weak camera signals, and the composite/vertical sync outputs feed DVR capture ASICs and motion-trigger circuits in FPGA deployment. The 8-SOIC footprint enables miniaturized camera PCB designs.
Рекомендуется
Video Capture and Editing Systems
The EL1881CSZ-T7 fits video capture and editing cards by providing the precise line- and field-rate timing references that digitizers require to sample composite video cleanly. The burst/back porch output supports chroma-luma separation circuits in professional editing equipment, while the odd/even field output enables proper field-ordering for interlaced capture. The Renesas datasheet confirms the device meets timing accuracy needs for broadcast-grade capture ASICs in FPGA co-processing roles.
Рекомендуется
Industrial Video Inspection Systems
The EL1881CSZ-T7 fits industrial video inspection systems where composite video from machine-vision cameras must be processed for line-scan timing in factory automation. The device's CMOS process delivers stable timing across industrial temperature ranges, and the 8-SOIC package supports surface-mount assembly on compact inspection video cards. The fixed 70 mV slicing ensures consistent sync extraction even when camera cable lengths vary in factory deployment.
Рекомендуется
Legacy Analog TV and DVD Player Signal Paths
The EL1881CSZ-T7 fits legacy analog TV receivers and DVD player signal paths where composite video timing must be regenerated for downstream display encoders and HDMI conversion ASICs. The CMOS-level support for both AC- and DC-coupled inputs allows flexible interfacing with legacy video stages, and the burst/back porch output enables proper color burst gating in NTSC/PAL decoders. The TTL-compatible outputs simplify interface to legacy signal processing circuits.
Рекомендуется
Video Format Converters
The EL1881CSZ-T7 fits video format converters that up-convert analog composite video to digital formats, where the sync must be regenerated before the analog-to-digital converter samples the video. The composite sync output provides the line-rate clock reference, while the vertical sync output feeds the field/frame counter in the converter ASIC. The Renesas datasheet's specified timing accuracy supports broadcast-quality conversion in FPGA-based video processor designs.
Рекомендуется
Сводка рекомендуемых товаров
Справочные инженерные данные для EL1881CSZ-T7 — сравнение, рекомендации по проектированию и информация о соответствии.
Руководство по выбору
Сравнение с аналогами
| Параметр | Этот товар | EL1881CSZ | EL1881CSZ-T7A | EL1881CS-T7 | LM1881M/NOPB | LM1881N/NOPB |
|---|---|---|---|---|---|---|
| Package | 8-SOIC (0.154") | 8-SOIC (0.154") - same | 8-SOIC (0.154") - same | 8-SOIC (0.154") - same | 8-SOIC (0.154") - same | 8-PDIP - different package |
| Brand | Renesas Electronics | Renesas Electronics | Renesas Electronics | Renesas Electronics | Texas Instruments | Texas Instruments |
| Sync Tip Slicing | Fixed 70 mV | Fixed 70 mV | Fixed 70 mV | Fixed 70 mV | Adjustable via external resistor | Adjustable via external resistor |
| Supply Current vs LM1881 | Lower | Lower | Lower | Lower | Higher (baseline) | Higher (baseline) |
| Supported Standards | NTSC, PAL, SECAM | NTSC, PAL, SECAM | NTSC, PAL, SECAM | NTSC, PAL, SECAM | NTSC, PAL, SECAM | NTSC, PAL, SECAM |
| Automotive Qualified | No | No | Yes (AEC-Q100) | No | No | No |
| Shipping Format | Tape & Reel (T7) | Tube | Tape & Reel (T7A) | Tape & Reel (T7) | Tape & Reel | Tube |
Ключевые отличия
- Lower supply current than LM1881 (против LM1881M/NOPB)
- Fixed 70 mV slicing threshold simplifies design (против LM1881M/NOPB)
- Automotive-grade variant available (против EL1881CSZ-T7A)
Заметки по проектированию
AC-couple the video source to the EL1881CSZ-T7 video input pin using a series capacitor (typically 0.1 uF) and a bias resistor to ground. Place the input coupling network as close as possible to pin 1 to minimize stray capacitance. Add a 0.1 uF ceramic bypass capacitor directly from VCC (pin 2) to GND (pin 3) with short traces to prevent supply noise from coupling into the sync slicer. The exposed pad on the 8-SOIC package is not present on this part - ground is pin 3 only.
The fixed 70 mV sync-tip slicing threshold requires the video source to deliver at least 0.5 Vp-p amplitude for reliable sync detection. For long cable runs that attenuate the sync pulse, place a buffer amplifier before the EL1881CSZ-T7 input to restore amplitude. For non-standard video sources with unusually small sync tips, evaluate the LM1881 with its adjustable slicing threshold as an alternative. Route the composite sync output (pin 4) away from the video input trace to avoid feedback coupling.
Do not omit the VCC bypass capacitor - the sync slicer is sensitive to supply noise that can appear as false sync pulses. Do not exceed the absolute maximum ratings on the video input pin - use a clamp diode or series resistor if the source could deliver more than 1.5 Vp-p. When substituting the LM1881M for the EL1881CSZ-T7, note that the LM1881 requires an external resistor on the slicing pin; the EL1881CSZ-T7 does not. Verify timing accuracy in your specific application before substitution.
Информация о соответствии
ROHS3 compliant per distributor listing (microchip-price.com). AEC-Q100 not qualified for the standard EL1881CSZ-T7; choose EL1881CSZ-T7A for automotive. REACH compliance not stated explicitly in web data - marked compliant based on Renesas standard practice for SOIC parts.
