component
DAC8740HRGER
Public Made by Adomby adom
Texas Instruments Interface - Specialized, VQFN-24-EP(4x4). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
main
123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212213214215216217218219220221222223224225226227228229230231232233234235236237238239240241242243244245246247248249250251252253254255256257258259260261262263264265266267268269270271272273274275276277278279280281282283284285286287288289290291292293294295296297298299300301302303304305306307308309310311312313314315316317318319320321322323324325326327
{
"schema_version": 1,
"type": "component",
"slug": "dac8740hrger",
"title": "DAC8740HRGER",
"brief": "Texas Instruments Interface - Specialized, VQFN-24-EP(4x4). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
"version": "0.1.0",
"license": "CC-BY-SA-4.0",
"tags": [
"component",
"communication interface chip-uart-485-232",
"dac8740hrger",
"factory-2.0.0",
"extractor-text"
],
"component": {
"mpn": "DAC8740HRGER",
"manufacturer": "Texas Instruments",
"package": "VQFN-24-EP(4x4)",
"pin_count": 25,
"category": "Communication Interface Chip/UART/485/232",
"subcategory": "Interface - Specialized",
"datasheet": "https://www.ti.com/cn/lit/gpn/dac8740h",
"parts": {
"symbol": "dac8740hrger.kicad_sym",
"footprint": "dac8740hrger.kicad_mod",
"model_3d": "dac8740hrger-hero.glb",
"model_3d_plain": "dac8740hrger.glb",
"model_3d_step": "dac8740hrger-etched.step",
"model_3d_step_plain": "dac8740hrger.step",
"lbr": "dac8740hrger.lbr"
},
"distributor_links": {
"lcsc": "C2674248",
"digikey": "DAC8740HRGER-ND",
"mouser": "595-DAC8740HRGER"
},
"distributor_check": {
"checked_at": "2026-10-07T01:25:01Z",
"source": "Component Ocean /api/assign-pns",
"digikey": {
"pn": "DAC8740HRGER-ND",
"status": "found",
"lifecycle": "Active"
},
"mouser": {
"pn": "595-DAC8740HRGER",
"status": "found"
}
},
"pins": [
{
"number": "1",
"name": "XEN",
"type": "input",
"description": "Crystal oscillator enable; logic low enables external crystal oscillator circuit, logic high disables it requiring external CMOS clock or internal oscillator. No digital input pin should be left floating."
},
{
"number": "2",
"name": "CLKO",
"type": "output",
"description": "Clock output; can be configured as clock output when using internal oscillator or external crystal oscillator."
},
{
"number": "3",
"name": "CLK_CFG0",
"type": "input",
"description": "Clock configuration input; used to configure input/output clocking scheme. No digital input pin should be left floating."
},
{
"number": "4",
"name": "CLK_CFG1",
"type": "input",
"description": "Clock configuration input; used to configure input/output clocking scheme. No digital input pin should be left floating."
},
{
"number": "5",
"name": "RST",
"type": "input",
"description": "Reset input; logic low places device into power-down mode and resets the device, logic high returns device to normal operation. No digital input pin should be left floating."
},
{
"number": "6",
"name": "CD",
"type": "output",
"description": "Carrier detect output; logic high indicates valid carrier is present in HART mode, or indicates jabber inhibitor has triggered in FF/PA mode."
},
{
"number": "7",
"name": "UART_IN",
"type": "input",
"description": "UART data input; serial data input for UART interface. No digital input pin should be left floating."
},
{
"number": "8",
"name": "UART_RTS",
"type": "bidirectional",
"description": "UART request to send; in HART mode, logic high enables demodulator and disables modulator, logic low enables modulator and disables demodulator; in FF/PA mode, reports transmit FIFO threshold information. No digital input pin should be left floating."
},
{
"number": "9",
"name": "DUPLEX",
"type": "input",
"description": "Full-duplex mode enable input; logic high enables full-duplex or internal loop-back test mode. No digital input pin should be left floating."
},
{
"number": "10",
"name": "UART_OUT",
"type": "output",
"description": "UART data output; serial data output from UART interface."
},
{
"number": "11",
"name": "IOVDD",
"type": "power_in",
"description": "Interface supply voltage; 1.71V to 5.5V supply for digital input and output circuitry, sets logical thresholds for digital interface."
},
{
"number": "12",
"name": "GND",
"type": "power_in",
"description": "Digital ground; ground reference voltage for all digital circuitry of the device."
},
{
"number": "13",
"name": "REG_CAP",
"type": "passive",
"description": "Internal regulator capacitor pad; connect capacitor for internal regulator."
},
{
"number": "14",
"name": "MOD_OUT",
"type": "output",
"description": "Modem output; FSK output sinusoid in HART mode or Manchester coded data stream in FOUNDATION Fieldbus and PROFIBUS PA modes; requires parallel capacitance of 5-22nF in HART mode or 0-100pF in FF/PA mode for stability."
},
{
"number": "15",
"name": "REF",
"type": "bidirectional",
"description": "Voltage reference; when internal reference enabled, outputs internal 1.5V reference voltage; when internal reference disabled, accepts external 2.5V reference input."
},
{
"number": "16",
"name": "MOD_IN",
"type": "input",
"description": "Modem input; HART FSK input or FOUNDATION Fieldbus and PROFIBUS PA Manchester coded data stream input. Do not connect if external filter is used."
},
{
"number": "17",
"name": "MOD_INF",
"type": "input",
"description": "Filtered modem input; when using internal band-pass filter, connect 680pF to pin in HART mode or 120pF in FF/PA modes; when using external filter, connect output of external filter to this pin."
},
{
"number": "18",
"name": "AVDD",
"type": "power_in",
"description": "Analog power supply; 2.7V to 5.5V supply voltage for analog circuitry of the device."
},
{
"number": "19",
"name": "GND",
"type": "power_in",
"description": "Analog ground; ground reference voltage for power supply input."
},
{
"number": "20",
"name": "X2",
"type": "input",
"description": "Crystal oscillator stimulus input; second terminal of external crystal oscillator."
},
{
"number": "21",
"name": "X1",
"type": "input",
"description": "Crystal or clock input; first terminal of external crystal oscillator or external CMOS clock input."
},
{
"number": "22",
"name": "GND",
"type": "power_in",
"description": "Digital ground; ground reference voltage for all digital circuitry of the device."
},
{
"number": "23",
"name": "REF_EN",
"type": "input",
"description": "Reference enable input; logic high enables internal 1.5V reference. No digital input pin should be left floating."
},
{
"number": "24",
"name": "BPF_EN",
"type": "input",
"description": "Band-pass filter enable input; logic high enables internal band-pass filter. No digital input pin should be left floating."
},
{
"number": "25",
"name": "EP",
"type": "passive",
"description": "Exposed pad (from the footprint; not named in the datasheet pin table)."
}
],
"provenance": {
"extractor": "extract_pins 0.3",
"factory_chain": {
"factory": "2.0.0",
"extractor": "extract_pins 0.3",
"primary_model": "claude-haiku-4-5-20251001",
"primary_mode": "text",
"consensus_model": "claude-sonnet-5-5",
"consensus": "agreed",
"guards": "pin_guards 0.1: passed",
"guard_notes": [
"exposed pad 25 added from the footprint",
"dropped thermal pad ['EP'] absent from footprint"
],
"pages_sent": 17,
"cost_usd": 0.1605,
"at": "2026-10-07T01:24:46"
},
"datasheet": {
"url": "https://www.ti.com/cn/lit/gpn/dac8740h",
"pages": 48,
"sha256": "4cde27aab0a7c3d9",
"source_tier": "lcsc"
},
"cad": "KiCad official (CC-BY-SA 4.0)",
"pins": {
"total": 25,
"described": 25,
"cites_pages": true,
"refuses_to_fabricate": true
}
},
"viewers": {
"symbol": "viewers/symbol.html",
"footprint": "viewers/footprint.html"
},
"models_3d": [
{
"file": "dac8740hrger.step",
"role": "plain",
"up": "Z",
"units": "mm",
"origin": "footprint origin = pad-pattern centre",
"seat": "z = 0",
"extents_mm": [
4,
4,
0.77
],
"zmin_mm": 0,
"centre_offset_mm": 0,
"footprint_binding": "identity",
"sha256": "096fc110543e6d324c5120c2d38e3dca87a389da9b6fac234f1fe40856295ef4",
"checked": "2026-10-07",
"checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
},
{
"file": "dac8740hrger-etched.step",
"role": "eda",
"up": "Z",
"units": "mm",
"origin": "footprint origin = pad-pattern centre",
"seat": "z = 0",
"extents_mm": [
4,
4,
0.77
],
"zmin_mm": 0,
"centre_offset_mm": 0,
"footprint_binding": "identity",
"sha256": "001a78ce452cd79a1c68a932186de85d6bff10eff75e943db6f9022c6ece916b",
"checked": "2026-10-07",
"checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
}
]
},
"metadata": {
"specs": {
"Manufacturer": "Texas Instruments",
"Package": "VQFN-24-EP(4x4)",
"Category": "Communication Interface Chip/UART/485/232",
"Pins": "25"
}
},
"variants": [],
"sections": [
"hero",
"viewers",
"readme",
"breadcrumbs",
"info"
],
"discovery_triggers": [
"dac8740hrger"
],
"discovery_pitch": "DAC8740HRGER (Texas Instruments) component page: datasheet pinout, KiCad symbol, footprint and 3D.",
"author": {
"name": "Ray",
"email": "[email protected]"
},
"dependencies": {},
"hero": {
"type": "image",
"path": "docs/hero.png"
},
"files": [
"page.json",
"README.md",
"dac8740hrger.kicad_sym",
"dac8740hrger.kicad_mod",
"dac8740hrger.glb",
"dac8740hrger.step",
"dac8740hrger.lbr",
"docs/hero.png",
"docs/dac8740hrger-datasheet.pdf",
"viewers/symbol.html",
"viewers/footprint.html",
"dac8740hrger-hero.glb",
"dac8740hrger-hero.overlay.json"
],
"visibility": {
"public": true
}
}