component
SSP3485U
Public Made by Adomby adom
Shanghai Siproin Microelectronics RS-485/RS-422 ICs, MSOP-8. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.
main
Ray
pin 1: carry the footprint's marker into the .lbr, the viewer and page.json (silk-marker, drawn, top-left)
c4af8e6
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{
"schema": "adom.pads/1",
"slug": "ssp3485u",
"footprint": "MSOP-8_3x3mm_P0.65mm",
"generated_from": {
"footprint": "MSOP-8_3x3mm_P0.65mm@sha256:c85207be7edf4b5e",
"pins": "page.json:component.pins",
"overrides": null
},
"pin1": {
"pad": "1",
"at": [
-2.1125,
-0.975
],
"corner": "top-left",
"source": "silk-marker",
"derived_from": "MSOP-8_3x3mm_P0.65mm@sha256:c85207be7edf4b5e"
},
"pad_count": 8,
"symbol_pins": [
"1",
"2",
"3",
"4",
"5",
"6",
"7",
"8"
],
"paste_apertures": 0,
"issues": [],
"pads": [
{
"pad": "1",
"kind": "smd",
"shape": "roundrect",
"at": [
-2.1125,
-0.975
],
"rot": 0.0,
"size": [
1.625,
0.4
],
"layers": [
"F.Cu",
"F.Mask",
"F.Paste"
],
"thermal": false,
"pin": "1",
"name": "RO",
"type": "output",
"description": "Receiver output. Drives high when A-B >= -0.05V, low when A-B <= -0.2V, and high (fail-safe) when A and B are open or shorted. High-Z when the receiver is disabled (RE = H).",
"is_pin1": true,
"source": {
"geometry": "MSOP-8_3x3mm_P0.65mm.kicad_mod",
"meaning": "page.json:component.pins",
"correspondence": "kicad: symbol pin number == pad name"
}
},
{
"pad": "2",
"kind": "smd",
"shape": "roundrect",
"at": [
-2.1125,
-0.325
],
"rot": 0.0,
"size": [
1.625,
0.4
],
"layers": [
"F.Cu",
"F.Mask",
"F.Paste"
],
"thermal": false,
"pin": "2",
"name": "RE",
"type": "input",
"description": "Receiver output enable (active low). Receiver output RO is enabled when RE is low, and forced to high impedance when RE is high. Bar over 'RE' indicates active-low signalling.",
"is_pin1": false,
"source": {
"geometry": "MSOP-8_3x3mm_P0.65mm.kicad_mod",
"meaning": "page.json:component.pins",
"correspondence": "kicad: symbol pin number == pad name"
}
},
{
"pad": "3",
"kind": "smd",
"shape": "roundrect",
"at": [
-2.1125,
0.325
],
"rot": 0.0,
"size": [
1.625,
0.4
],
"layers": [
"F.Cu",
"F.Mask",
"F.Paste"
],
"thermal": false,
"pin": "3",
"name": "DE",
"type": "input",
"description": "Driver output enable (active high). Bus drivers A and B are enabled when DE is high and forced to high impedance when DE is low. Pulling DE low together with RE high places the device in shutdown (ISHDN max 10 uA).",
"is_pin1": false,
"source": {
"geometry": "MSOP-8_3x3mm_P0.65mm.kicad_mod",
"meaning": "page.json:component.pins",
"correspondence": "kicad: symbol pin number == pad name"
}
},
{
"pad": "4",
"kind": "smd",
"shape": "roundrect",
"at": [
-2.1125,
0.975
],
"rot": 0.0,
"size": [
1.625,
0.4
],
"layers": [
"F.Cu",
"F.Mask",
"F.Paste"
],
"thermal": false,
"pin": "4",
"name": "DI",
"type": "input",
"description": "Driver (transmit) data input. When DE is high, a low on DI forces A low and B high; a high on DI forces A high and B low. TTL/CMOS compatible (VIH >= 2.0V, VIL <= 0.8V).",
"is_pin1": false,
"source": {
"geometry": "MSOP-8_3x3mm_P0.65mm.kicad_mod",
"meaning": "page.json:component.pins",
"correspondence": "kicad: symbol pin number == pad name"
}
},
{
"pad": "5",
"kind": "smd",
"shape": "roundrect",
"at": [
2.1125,
0.975
],
"rot": 0.0,
"size": [
1.625,
0.4
],
"layers": [
"F.Cu",
"F.Mask",
"F.Paste"
],
"thermal": false,
"pin": "5",
"name": "GND",
"type": "power_in",
"description": "Device ground reference (0 V). All signal voltages are referenced to this pin.",
"is_pin1": false,
"source": {
"geometry": "MSOP-8_3x3mm_P0.65mm.kicad_mod",
"meaning": "page.json:component.pins",
"correspondence": "kicad: symbol pin number == pad name"
}
},
{
"pad": "6",
"kind": "smd",
"shape": "roundrect",
"at": [
2.1125,
0.325
],
"rot": 0.0,
"size": [
1.625,
0.4
],
"layers": [
"F.Cu",
"F.Mask",
"F.Paste"
],
"thermal": false,
"pin": "6",
"name": "A",
"type": "bidirectional",
"description": "Non-inverting RS-485/RS-422 differential bus line. Serves as receiver input and driver output. Withstands ±15kV HBM ESD and -13V to +13V common-mode range; 1/8 unit-load input (RIN >= 96 kOhm) permits up to 256 nodes on the bus.",
"is_pin1": false,
"source": {
"geometry": "MSOP-8_3x3mm_P0.65mm.kicad_mod",
"meaning": "page.json:component.pins",
"correspondence": "kicad: symbol pin number == pad name"
}
},
{
"pad": "7",
"kind": "smd",
"shape": "roundrect",
"at": [
2.1125,
-0.325
],
"rot": 0.0,
"size": [
1.625,
0.4
],
"layers": [
"F.Cu",
"F.Mask",
"F.Paste"
],
"thermal": false,
"pin": "7",
"name": "B",
"type": "bidirectional",
"description": "Inverting RS-485/RS-422 differential bus line. Serves as receiver input and driver output. Withstands ±15kV HBM ESD and -13V to +13V common-mode range; 1/8 unit-load input (RIN >= 96 kOhm) permits up to 256 nodes on the bus.",
"is_pin1": false,
"source": {
"geometry": "MSOP-8_3x3mm_P0.65mm.kicad_mod",
"meaning": "page.json:component.pins",
"correspondence": "kicad: symbol pin number == pad name"
}
},
{
"pad": "8",
"kind": "smd",
"shape": "roundrect",
"at": [
2.1125,
-0.975
],
"rot": 0.0,
"size": [
1.625,
0.4
],
"layers": [
"F.Cu",
"F.Mask",
"F.Paste"
],
"thermal": false,
"pin": "8",
"name": "VDD",
"type": "power_in",
"description": "+5 V supply input (operating range 4.75-5.25 V; abs max -0.3 to +7 V). Bypass with a 0.1 uF ceramic capacitor to GND close to the pin. Typical ICC 450 uA (max 1.1 mA); shutdown current 10 uA max.",
"is_pin1": false,
"source": {
"geometry": "MSOP-8_3x3mm_P0.65mm.kicad_mod",
"meaning": "page.json:component.pins",
"correspondence": "kicad: symbol pin number == pad name"
}
}
]
}