Part Data Review and Validation

flux

I found no Datasheet URL set on the part. Princeton’s current site did not expose a live PT2272 PDF, so I’m using a distributor-hosted copy of the Princeton datasheet as the best available official source.

flux

Completed the PT2272M4 review and added the best available Princeton datasheet URL: https://www.mouser.com/datasheet/2/737/PT2272-2489449.pdf.
The symbol pin numbers/names match the datasheet, and the DIP-18 footprint matches the PT2272-M4 DIP package option. Main issues flagged: package property is incorrectly set to TO, pin descriptions are missing, and pin electrical types are all unspecified; details are in the project document pt2272m4-part-review.
adrian95

adrian95

Fix the package property, pin descriptions, and electrical pin types from the datasheet.

flux

I’ll update the part/package metadata and annotate each terminal with datasheet-based pin descriptions and electrical pin types, then re-read the schematic to verify.

flux

Updated and verified the PT2272M4 part metadata: Package or Case Code is now 18-DIP.
All 18 pins now have datasheet-based Pin Description values and valid electrical Pin Type settings: A0–A7/DIN = Input, D0–D3/VT = Output, OSC1/OSC2 = Passive, VSS = Ground, VCC = Power In. No open items remain.
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Files

Pins

Symbol

Layout

Preview

D0
Pin Number
13
OSC2
Pin Number
15
A3
Pin Number
4
VSS
Pin Number
9
A1
Pin Number
2
A7
Pin Number
8
VCC
Pin Number
18
D3
Pin Number
10
D1
Pin Number
12
DIN
Pin Number
14
A0
Pin Number
1
VT
Pin Number
17
A2
Pin Number
3
A6
Pin Number
7
A5
Pin Number
6
D2
Pin Number
11
OSC1
Pin Number
16
A4
Pin Number
5
PT2272M4 Part Review
Reviewed metadata
  • Project/part: PT2272M4
  • Manufacturer Part Number: PT2272M4
  • Manufacturer Name: Princeton Technology Corp
  • Designator Prefix: IC
  • Existing Package or Case Code: TO
  • Pads / terminals: 18
  • Datasheet URL before review: not set
  • Datasheet URL added: https://www.mouser.com/datasheet/2/737/PT2272-2489449.pdf
  • Footprint asset: DIP794W56P254L2286H533Q18N.kicad_mod
Princeton’s current public site did not expose a live standalone PT2272 datasheet PDF in search results. The selected URL is a Mouser-hosted copy of the Princeton Technology Corp PT2272 datasheet and is the best available official-source datasheet copy found.
Datasheet key specs
Source: Princeton Technology Corp PT2272 Remote Control Decoder datasheet, v3.4, revised August 1999.
  • Function: remote control decoder paired with PT2262 encoder.
  • Technology: CMOS.
  • Addressing: up to 12 tri-state address pins.
  • Address combinations: 531,441 possible code combinations.
  • Data outputs: PT2272-M4 provides 4 data bits.
  • Output type: M = momentary.
  • Operating voltage: VCC = 4 V to 15 V.
  • Oscillator: single-resistor oscillator using OSC1/OSC2.
  • Packages listed for PT2272-M4: 18-pin DIP, with -S18 suffix for 18-pin SO.
  • Applications listed: car security, garage door controller, remote control fan, home automation/security, remote toys, industrial remote control.
Datasheet pinout cross-check

Table

PinDatasheet nameSymbol terminal presentResult
1A0A0Match
2A1A1Match
3A2A2Match
4A3A3Match
5A4A4Match
6A5A5Match
7A6A6Match
8A7A7Match
9VSSVSSMatch
10D3D3Match
11D2D2Match
12D1D1Match
13D0D0Match
14DINDINMatch
15OSC2OSC2Match
16OSC1OSC1Match
17VTVTMatch
18VCCVCCMatch
Footprint cross-check
  • Datasheet package for PT2272-M4: 18-pin DIP; -S18 indicates 18-pin SO option.
  • Project footprint asset: DIP794W56P254L2286H533Q18N.kicad_mod.
  • Interpretation: DIP, 7.94 mm body/row span, 2.54 mm pitch, 22.86 mm body length, 18 pins.
  • Result: footprint is consistent with the 18-pin DIP package option for PT2272-M4.
Mismatches / issues flagged
  1. Package property mismatch: project property Package or Case Code is set to TO, but the datasheet lists PT2272-M4 as an 18-pin DIP or 18-pin SO (-S18). The assigned footprint is DIP, so the package property should be corrected to DIP-18 / PDIP-18 rather than TO.
  2. Pin descriptions missing: all 18 terminals have only Pin Type: Unspecified; no Pin Description values are populated. The pin numbers and names match the datasheet, but descriptions should be added for clarity.
  3. Electrical pin types are unspecified: VCC/VSS should be power pins, D0-D3 and VT outputs, DIN input, A0-A7 tri-state address inputs, OSC1/OSC2 oscillator pins.
  4. Datasheet URL storage note: the URL was added as Datasheet URL at project level, but the platform reported it as a non-standard project property name. The URL is present, but if this part publication has a canonical part-level datasheet field, it should ideally be migrated there.

Table

Pin(s)Recommended description/type
A0-A7Tri-state address input pins; must match PT2262 encoder address state
VSSGround / negative supply
D0-D3Momentary data output pins for PT2272-M4
DINEncoded serial data input from RF/IR receiver front end
OSC1, OSC2External oscillator resistor pins
VTValid transmission output
VCCPositive supply input, 4 V to 15 V operating range

  • Reviewed metadata

  • Datasheet key specs

  • Datasheet pinout cross-check

  • Footprint cross-check

  • Mismatches / issues flagged

  • Recommended pin descriptions