SY89547LMG-TR Microchip Integrated Circuit (Quad Flat No-Lead) In Stock
The SY89547LMG-TR is a 3.3 V LVDS 4:1 multiplexer with 1:2 fanout from Microchip, supporting data rates up to 3.2 Gbps in a 32-pin VQFN package. It selects one of four LVDS differential input channels and drives two LVDS output copies simultaneously for high-speed clock and data distribution. This device suits backplane switching, test equipment, and optical networking designs requiring low-jitter Gbps signal routing.
- Manufacturer
- Microchip
- Package
- Quad Flat No-Lead
- Pin Count
- 32
- Lifecycle
- ACTIVE
- Datasheet
- SY89547LMG-TR Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $4.4118(MOQ 1)
- Temp Range
- -40.0°C to 85.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 4:1 LVDS multiplexer with 3.2 Gbps data rate enables multi-source high-speed serial selection on 3.3 V supply without external level shifting
- Integrated 1:2 fanout drives two LVDS output loads simultaneously from a single selected input, reducing external buffer count in clock distribution trees
- 32-pin VQFN package with exposed thermal pad minimizes PCB footprint for high-density line cards and optical transceiver modules operating at multi-Gbps rates
Applications
The SY89547LMG-TR is used in SONET/SDH and Ethernet line cards where 4 high-speed LVDS serial streams must be selected and fanned out at up to 3.2 Gbps for backplane switching and cross-connect applications. It suits test and measurement equipment requiring low-jitter clock source selection with simultaneous dual-output fanout for synchronizing multiple measurement channels. The device also applies to optical networking transceivers and FPGA clock distribution networks where a single 3.3 V LVDS mux reduces the discrete component count for Gbps-class signal routing.
Specifications
| Manufacturer Package Code | VQFN-32 |
| Reach Compliance Code | Compliant |
| YTEOL | 9 |
| Family | 89547 |
| JESD-30 Code | S-XQCC-N32 |
| JESD-609 Code | e4 |
| Logic IC Type | MULTIPLEXER |
| Number of Functions | 1 |
| Number of Inputs | 4 |
| Number of Outputs | 1 |
| Output Polarity | COMPLEMENTARY |
| Package Body Material | UNSPECIFIED |
| Package Equivalence Code | LCC32,.2SQ,20 |
| Package Shape | SQUARE |
| Package Style | CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE |
| Packing Method | TR |
| Peak Reflow Temperature (Cel) | 260 |
| Propagation Delay (tpd) | 0.54ns |
| Qualification Status | Not Qualified |
| Supply Voltage-Max (Vsup) | 3.6V |
| Supply Voltage-Min (Vsup) | 3V |
| Supply Voltage-Nom (Vsup) | 3.3V |
| Surface Mount | YES |
| Temperature Grade | INDUSTRIAL |
| Terminal Finish | Nickel/Palladium/Gold (Ni/Pd/Au) |
| Terminal Form | NO LEAD |
| Terminal Pitch | 0.5mm |
| Terminal Position | QUAD |
| Package | Quad Flat No-Lead |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 2 |
| ECCN | 5A991.B.1 |
| HTS Code | 8542.39.00.01 |
| Country of Origin | Malaysia |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What is the maximum data rate of the SY89547LMG-TR and which serial standards does it support?
The SY89547LMG-TR supports data rates up to 3.2 Gbps, covering OC-48 SONET at 2.488 Gbps, Gigabit Ethernet at 1.25 Gbps, and 2× Fibre Channel at 2.125 Gbps. Its LVDS differential signaling maintains low jitter across the 3.2 Gbps range, making it suitable for high-speed backplane and optical interface designs on a standard 3.3 V supply.
How does the 1:2 fanout of the SY89547LMG-TR reduce external component count in clock distribution designs?
The SY89547LMG-TR drives 2 independent LVDS output loads simultaneously from the selected input channel, eliminating the need for a separate LVDS fanout buffer IC. In a typical clock tree with 4 input sources and 2 destination loads, this integration replaces at least one additional buffer device, saving board space, reducing trace stubs, and cutting jitter accumulation by one component stage in the 3.2 Gbps signal path.
What package does the SY89547LMG-TR use and how does it affect thermal management at Gbps switching speeds?
The SY89547LMG-TR uses a 32-pin VQFN package (approximately 5 mm × 5 mm) with an exposed thermal pad on the underside. The thermal pad bonds directly to a PCB ground plane, allowing heat generated during continuous 3.2 Gbps switching to dissipate efficiently without a heatsink. This is important in dense line cards where multiple high-speed mux devices are placed near each other with limited airflow clearance.
When would a designer choose SY89547LMG-TR over a 2:1 LVDS multiplexer for a 4-source OC-48 backplane design?
A 4-source OC-48 backplane at 2.488 Gbps requires selecting among 4 LVDS serial streams, which would need two cascaded 2:1 mux stages — adding at least one extra propagation delay of several hundred picoseconds and one additional source of additive jitter. The SY89547LMG-TR's single-stage 4:1 architecture selects any of the 4 OC-48 inputs directly, reducing total propagation delay and jitter contribution by eliminating one mux stage from the signal path.
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| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $7.9800 | $7.98 |
| 25+ | $6.6860 | $167.15 |
| 50+ | $4.8222 | $241.11 |
| 150+ | $4.6170 | $692.55 |
| 250+ | $4.4118 | $1102.95 |
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