component
SN74HC21DR
Public Made by Adomby adom
Texas Instruments Gates, SOIC-14. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.
← Commit history
orderable attributes: rebuild .lbr with adom-lbr 2.18.0 so MPN, MANUFACTURER and the distributor part numbers reach <technology> (DIGIKEY_PN 296-14842-2-ND, LCSC_PN C75398, MOUSER_PN 595-SN74HC21DR). The published library carried no attributes at all, so a BOM had nothing to buy from. Distributor PNs matched on exact MPN AND corroborating manufacturer.
2 files changed
+31−7
page.json+9−5@@ -26,13 +26,17 @@ "model_3d_step": "sn74hc21dr.step", "lbr": "sn74hc21dr.lbr" },- "distributor_links": {},+ "distributor_links": {+ "digikey": "296-14842-2-ND",+ "mouser": "595-SN74HC21DR",+ "lcsc": "C75398"+ }, "pins": [ { "number": "1", "name": "1A", "type": "input",- "description": "Channel 1, Input A. CMOS logic input to gate 1 (VIH ≥ 3.15 V @ VCC = 4.5 V; VIL ≤ 1.35 V @ VCC = 4.5 V)."+ "description": "Channel 1, Input A. CMOS logic input to gate 1 (VIH \u2265 3.15 V @ VCC = 4.5 V; VIL \u2264 1.35 V @ VCC = 4.5 V)." }, { "number": "2",@@ -62,7 +66,7 @@ "number": "6", "name": "1Y", "type": "output",- "description": "Channel 1, Output Y. 1Y = 1A · 1B · 1C · 1D. CMOS push-pull output; IOL/IOH up to ±5.2 mA at VCC = 6 V."+ "description": "Channel 1, Output Y. 1Y = 1A \u00b7 1B \u00b7 1C \u00b7 1D. CMOS push-pull output; IOL/IOH up to \u00b15.2 mA at VCC = 6 V." }, { "number": "7",@@ -74,7 +78,7 @@ "number": "8", "name": "2Y", "type": "output",- "description": "Channel 2, Output Y. 2Y = 2A · 2B · 2C · 2D. CMOS push-pull output; IOL/IOH up to ±5.2 mA at VCC = 6 V."+ "description": "Channel 2, Output Y. 2Y = 2A \u00b7 2B \u00b7 2C \u00b7 2D. CMOS push-pull output; IOL/IOH up to \u00b15.2 mA at VCC = 6 V." }, { "number": "9",@@ -110,7 +114,7 @@ "number": "14", "name": "VCC", "type": "power_in",- "description": "Positive supply, 2 V to 6 V (absolute maximum 7 V). Bypass with a 0.1 µF ceramic capacitor to GND close to the pin."+ "description": "Positive supply, 2 V to 6 V (absolute maximum 7 V). Bypass with a 0.1 \u00b5F ceramic capacitor to GND close to the pin." } ], "provenance": {
sn74hc21dr.lbr+22−2@@ -68,6 +68,18 @@ <smd name="12" x="2.4750" y="1.2700" dx="1.9500" dy="0.6000" layer="1"/> <smd name="13" x="2.4750" y="2.5400" dx="1.9500" dy="0.6000" layer="1"/> <smd name="14" x="2.4750" y="3.8100" dx="1.9500" dy="0.6000" layer="1"/>+ <polygon width="0.1200" layer="21">+ <vertex x="-2.6000" y="4.3700"/>+ <vertex x="-2.8400" y="4.7000"/>+ <vertex x="-2.3600" y="4.7000"/>+ </polygon>+ <polygon width="0.1000" layer="51">+ <vertex x="-0.9750" y="4.3250"/>+ <vertex x="1.9500" y="4.3250"/>+ <vertex x="1.9500" y="-4.3250"/>+ <vertex x="-1.9500" y="-4.3250"/>+ <vertex x="-1.9500" y="3.3500"/>+ </polygon> <wire x1="-2.0600" y1="4.4350" x2="2.0600" y2="4.4350" width="0.1200" layer="21"/> <wire x1="-2.0600" y1="4.3700" x2="-2.0600" y2="4.4350" width="0.1200" layer="21"/> <wire x1="-2.0600" y1="-4.4350" x2="-2.0600" y2="-4.3700" width="0.1200" layer="21"/>@@ -76,7 +88,7 @@ <wire x1="2.0600" y1="-4.4350" x2="-2.0600" y2="-4.4350" width="0.1200" layer="21"/> <text x="0" y="5.385" size="1.27" layer="25" align="bottom-center">>NAME</text> <text x="0" y="-5.385" size="1.27" layer="27" align="top-center">>VALUE</text>-<!--adom-pin1--><polygon width="0.0500" layer="21"><vertex x="-2.6000" y="4.3700"/><vertex x="-2.8400" y="4.7000"/><vertex x="-2.3600" y="4.7000"/></polygon></package>+</package> </packages> <symbols> <symbol name="SN74HC21DR">@@ -126,7 +138,15 @@ <connect gate="G$1" pin="2A" pad="9"/> <connect gate="G$1" pin="2Y" pad="8"/> </connects>- <technologies><technology name=""/></technologies>+ <technologies>+ <technology name="">+ <attribute name="MPN" value="SN74HC21DR" constant="no"/>+ <attribute name="MANUFACTURER" value="Texas Instruments" constant="no"/>+ <attribute name="MOUSER_PN" value="595-SN74HC21DR" constant="no"/>+ <attribute name="DIGIKEY_PN" value="296-14842-2-ND" constant="no"/>+ <attribute name="LCSC_PN" value="C75398" constant="no"/>+ </technology>+ </technologies> </device> </devices> </deviceset>