

Overview
The FDC37C78-HT is an interface Specialized made by Microchip Technology in a TQFP-48(7x7) package with 48 pins. 2Mbps 3.3V~5V Interrupt generation、Power-up/reset configuration TQFP-48(7x7) Interface - Specialized ROHS.
PCBKit's library has its KiCad symbol (EasyEDA_Cloud:FDC37C78-HT, from EasyEDA) and its footprint (Package_QFP:TQFP-48_7x7mm_P0.5mm, from KiCad's library), ready for a KiCad board. JLCPCB lists it (part C633674). 2 open-source boards in 1 repository on GitHub use it.
Symbol
Footprint
Parameters
3- Data Rate
- 2Mbps
- Features
- Interrupt generation, Power-up/reset configuration
- Voltage - Supply
- 3.3V~5V
Order codes
1- FDC37C78-HTLCSC C633674
Pinout
48| Pin | Name | Type |
|---|---|---|
| 1 | nDACK | Unspecified |
| 2 | D0 | Unspecified |
| 3 | D1 | Unspecified |
| 4 | D2 | Unspecified |
| 5 | D3 | Unspecified |
| 6 | VSS | Unspecified |
| 7 | VCC | Unspecified |
| 8 | D4 | Unspecified |
| 9 | D5 | Unspecified |
| 10 | D6 | Unspecified |
| 11 | D7 | Unspecified |
| 12 | VCC | Unspecified |
| 13 | IRQ | Unspecified |
| 14 | TC | Unspecified |
| 15 | nTRK0 | Unspecified |
| 16 | nINDEX | Unspecified |
| 17 | nWETPRT | Unspecified |
| 18 | VSS | Unspecified |
| 19 | VCC | Unspecified |
| 20 | nDSKCHG | Unspecified |
| 21 | nRDATA | Unspecified |
| 22 | DRVDEN0 | Unspecified |
| 23 | DRVDEN1 | Unspecified |
| 24 | DENSEL | Unspecified |
| 25 | MEDIA_ID0 | Unspecified |
| 26 | MEDIA_ID1 | Unspecified |
| 27 | nWDATA | Unspecified |
| 28 | nWGATE | Unspecified |
| 29 | nHDSEL | Unspecified |
| 30 | VSS | Unspecified |
| 31 | nSTEP | Unspecified |
| 32 | VCC | Unspecified |
| 33 | nDIR | Unspecified |
| 34 | nMTR1/IDLE | Unspecified |
| 35 | nDS1/PD | Unspecified |
| 36 | nMTR0 | Unspecified |
| 37 | nDS0 | Unspecified |
| 38 | RESET | Unspecified |
| 39 | X2 | Unspecified |
| 40 | X1 | Unspecified |
| 41 | VSS | Unspecified |
| 42 | A2 | Unspecified |
| 43 | A1 | Unspecified |
| 44 | A0 | Unspecified |
| 45 | nCS | Unspecified |
| 46 | nIOR | Unspecified |
| 47 | nIOW | Unspecified |
| 48 | DRQ | Unspecified |
Open-source boards using it
All 2- 4 layers165.7 × 100 mm

- 4 layers55.2 × 49.5 mm

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Is there a KiCad symbol and footprint for the FDC37C78-HT?
Yes. The symbol is EasyEDA_Cloud:FDC37C78-HT and the footprint Package_QFP:TQFP-48_7x7mm_P0.5mm, both drawn on this page. PCBKit places them on a board for you when you design with it.
What package is the FDC37C78-HT?
TQFP-48(7x7), with 48 pins. Its footprint is drawn on this page.
Where is the FDC37C78-HT datasheet?
Microchip Technology publishes it: the Datasheet link on this page opens it.
Where can I order the FDC37C78-HT?
JLCPCB lists it as part C633674, with 0 in stock; the sellers' links on this page open their listings.
What can replace the FDC37C78-HT?
Parts like it in the library: the KSZ8863RLLI by Microchip Technology, the PI3HDMI521FBE by Diodes Incorporated, the DS8007-ENG+ by Maxim Integrated (Analog Devices) and the BD3375KV-CE2 by ROHM Semiconductor. Check their datasheets: a part that fits the footprint may still differ in its ratings.
Which open-source boards use the FDC37C78-HT?
2 boards in 1 repository on GitHub; the most starred are listed on this page, with their KiCad files.
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