SN74HCT138DR

@@ -53,97 +53,97 @@         "number": "1",         "name": "A",         "type": "input",-        "description": "Binary address select input A (LSB); TTL-compatible with VIH \u2265 2 V and VIL \u2264 0.8 V at VCC = 4.5 V to 5.5 V; selects one of eight outputs in combination with B and C."+        "description": "Binary address select input A (LSB); TTL-compatible with VIH ≥ 2 V and VIL ≤ 0.8 V at VCC = 4.5 V to 5.5 V; selects one of eight outputs in combination with B and C."       },       {         "number": "2",         "name": "B",         "type": "input",-        "description": "Binary address select input B (middle bit); TTL-compatible with VIH \u2265 2 V and VIL \u2264 0.8 V at VCC = 4.5 V to 5.5 V."+        "description": "Binary address select input B (middle bit); TTL-compatible with VIH ≥ 2 V and VIL ≤ 0.8 V at VCC = 4.5 V to 5.5 V."       },       {         "number": "3",         "name": "C",         "type": "input",-        "description": "Binary address select input C (MSB); TTL-compatible with VIH \u2265 2 V and VIL \u2264 0.8 V at VCC = 4.5 V to 5.5 V."+        "description": "Binary address select input C (MSB); TTL-compatible with VIH ≥ 2 V and VIL ≤ 0.8 V at VCC = 4.5 V to 5.5 V."       },       {         "number": "4",         "name": "~{G2A}",         "type": "input",-        "description": "Active-low enable input G2A; all outputs forced high when this pin is high; must be low together with ~G2B and G1 high to enable the decoder; VIH \u2265 2 V, VIL \u2264 0.8 V, IImax = 1 \u00b5A."+        "description": "Active-low enable input G2A; all outputs forced high when this pin is high; must be low together with ~G2B and G1 high to enable the decoder; VIH ≥ 2 V, VIL ≤ 0.8 V, IImax = 1 µA."       },       {         "number": "5",         "name": "~{G2B}",         "type": "input",-        "description": "Active-low enable input G2B; all outputs forced high when this pin is high; must be low together with ~G2A and G1 high to enable the decoder; VIH \u2265 2 V, VIL \u2264 0.8 V, IImax = 1 \u00b5A."+        "description": "Active-low enable input G2B; all outputs forced high when this pin is high; must be low together with ~G2A and G1 high to enable the decoder; VIH ≥ 2 V, VIL ≤ 0.8 V, IImax = 1 µA."       },       {         "number": "6",         "name": "G1",         "type": "input",-        "description": "Active-high enable input; all outputs forced high when G1 is low; must be high together with ~G2A and ~G2B both low to enable the decoder; VIH \u2265 2 V, VIL \u2264 0.8 V, IImax = 1 \u00b5A."+        "description": "Active-high enable input; all outputs forced high when G1 is low; must be high together with ~G2A and ~G2B both low to enable the decoder; VIH ≥ 2 V, VIL ≤ 0.8 V, IImax = 1 µA."       },       {         "number": "7",         "name": "Y7",         "type": "output",-        "description": "Active-low decoded output 7; asserted low when G1=H, ~G2A=L, ~G2B=L and CBA=111; VOH \u2265 3.84 V at IOH = -4 mA, VOL \u2264 0.33 V at IOL = 4 mA, tpd \u2264 45 ns at VCC = 4.5 V."+        "description": "Active-low decoded output 7; asserted low when G1=H, ~G2A=L, ~G2B=L and CBA=111; VOH ≥ 3.84 V at IOH = -4 mA, VOL ≤ 0.33 V at IOL = 4 mA, tpd ≤ 45 ns at VCC = 4.5 V."       },       {         "number": "8",         "name": "GND",         "type": "power_in",-        "description": "Ground reference (0 V); continuous current through GND pin must not exceed \u00b150 mA."+        "description": "Ground reference (0 V); continuous current through GND pin must not exceed ±50 mA."       },       {         "number": "9",         "name": "Y6",         "type": "output",-        "description": "Active-low decoded output 6; asserted low when G1=H, ~G2A=L, ~G2B=L and CBA=110; VOH \u2265 3.84 V at IOH = -4 mA, VOL \u2264 0.33 V at IOL = 4 mA, tpd \u2264 45 ns at VCC = 4.5 V."+        "description": "Active-low decoded output 6; asserted low when G1=H, ~G2A=L, ~G2B=L and CBA=110; VOH ≥ 3.84 V at IOH = -4 mA, VOL ≤ 0.33 V at IOL = 4 mA, tpd ≤ 45 ns at VCC = 4.5 V."       },       {         "number": "10",         "name": "Y5",         "type": "output",-        "description": "Active-low decoded output 5; asserted low when G1=H, ~G2A=L, ~G2B=L and CBA=101; VOH \u2265 3.84 V at IOH = -4 mA, VOL \u2264 0.33 V at IOL = 4 mA, tpd \u2264 45 ns at VCC = 4.5 V."+        "description": "Active-low decoded output 5; asserted low when G1=H, ~G2A=L, ~G2B=L and CBA=101; VOH ≥ 3.84 V at IOH = -4 mA, VOL ≤ 0.33 V at IOL = 4 mA, tpd ≤ 45 ns at VCC = 4.5 V."       },       {         "number": "11",         "name": "Y4",         "type": "output",-        "description": "Active-low decoded output 4; asserted low when G1=H, ~G2A=L, ~G2B=L and CBA=100; VOH \u2265 3.84 V at IOH = -4 mA, VOL \u2264 0.33 V at IOL = 4 mA, tpd \u2264 45 ns at VCC = 4.5 V."+        "description": "Active-low decoded output 4; asserted low when G1=H, ~G2A=L, ~G2B=L and CBA=100; VOH ≥ 3.84 V at IOH = -4 mA, VOL ≤ 0.33 V at IOL = 4 mA, tpd ≤ 45 ns at VCC = 4.5 V."       },       {         "number": "12",         "name": "Y3",         "type": "output",-        "description": "Active-low decoded output 3; asserted low when G1=H, ~G2A=L, ~G2B=L and CBA=011; VOH \u2265 3.84 V at IOH = -4 mA, VOL \u2264 0.33 V at IOL = 4 mA, tpd \u2264 45 ns at VCC = 4.5 V."+        "description": "Active-low decoded output 3; asserted low when G1=H, ~G2A=L, ~G2B=L and CBA=011; VOH ≥ 3.84 V at IOH = -4 mA, VOL ≤ 0.33 V at IOL = 4 mA, tpd ≤ 45 ns at VCC = 4.5 V."       },       {         "number": "13",         "name": "Y2",         "type": "output",-        "description": "Active-low decoded output 2; asserted low when G1=H, ~G2A=L, ~G2B=L and CBA=010; VOH \u2265 3.84 V at IOH = -4 mA, VOL \u2264 0.33 V at IOL = 4 mA, tpd \u2264 45 ns at VCC = 4.5 V."+        "description": "Active-low decoded output 2; asserted low when G1=H, ~G2A=L, ~G2B=L and CBA=010; VOH ≥ 3.84 V at IOH = -4 mA, VOL ≤ 0.33 V at IOL = 4 mA, tpd ≤ 45 ns at VCC = 4.5 V."       },       {         "number": "14",         "name": "Y1",         "type": "output",-        "description": "Active-low decoded output 1; asserted low when G1=H, ~G2A=L, ~G2B=L and CBA=001; VOH \u2265 3.84 V at IOH = -4 mA, VOL \u2264 0.33 V at IOL = 4 mA, tpd \u2264 45 ns at VCC = 4.5 V."+        "description": "Active-low decoded output 1; asserted low when G1=H, ~G2A=L, ~G2B=L and CBA=001; VOH ≥ 3.84 V at IOH = -4 mA, VOL ≤ 0.33 V at IOL = 4 mA, tpd ≤ 45 ns at VCC = 4.5 V."       },       {         "number": "15",         "name": "Y0",         "type": "output",-        "description": "Active-low decoded output 0; asserted low when G1=H, ~G2A=L, ~G2B=L and CBA=000; VOH \u2265 3.84 V at IOH = -4 mA, VOL \u2264 0.33 V at IOL = 4 mA, tpd \u2264 45 ns at VCC = 4.5 V."+        "description": "Active-low decoded output 0; asserted low when G1=H, ~G2A=L, ~G2B=L and CBA=000; VOH ≥ 3.84 V at IOH = -4 mA, VOL ≤ 0.33 V at IOL = 4 mA, tpd ≤ 45 ns at VCC = 4.5 V."       },       {         "number": "16",         "name": "VCC",         "type": "power_in",-        "description": "Positive supply voltage; recommended operating range 4.5 V to 5.5 V; absolute maximum 7 V; each VCC pin should be bypassed with a 0.1 \u00b5F capacitor; continuous current \u00b150 mA max."+        "description": "Positive supply voltage; recommended operating range 4.5 V to 5.5 V; absolute maximum 7 V; each VCC pin should be bypassed with a 0.1 µF capacitor; continuous current ±50 mA max."       }     ],     "provenance": {@@ -180,6 +180,46 @@     "viewers": {       "symbol": "viewers/symbol.html",       "footprint": "viewers/footprint.html"-    }+    },+    "models_3d": [+      {+        "file": "sn74hct138dr.step",+        "role": "plain",+        "up": "Z",+        "units": "mm",+        "origin": "footprint origin = pad-pattern centre",+        "seat": "z = 0",+        "extents_mm": [+          6.0,+          9.9,+          1.75+        ],+        "zmin_mm": -0.0,+        "centre_offset_mm": 0.0,+        "footprint_binding": "identity",+        "sha256": "d5eeddb4c0b304dc61950919b126fc61d7586abd5f16ab71a2a79759ec6498bf",+        "checked": "2026-10-07",+        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"+      },+      {+        "file": "sn74hct138dr-etched.step",+        "role": "eda",+        "up": "Z",+        "units": "mm",+        "origin": "footprint origin = pad-pattern centre",+        "seat": "z = 0",+        "extents_mm": [+          6.0,+          9.9,+          1.75+        ],+        "zmin_mm": -0.0,+        "centre_offset_mm": 0.0,+        "footprint_binding": "identity",+        "sha256": "b3454a8b41e5ac00d695d047ded0ab0daca9ac2080adbe8dd316c4ec2ccdbaf8",+        "checked": "2026-10-07",+        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"+      }+    ]   }-}\ No newline at end of file+}