SN74LVC541APWR

@@ -0,0 +1,77 @@+# SN74LVC541APWR++**Texas Instruments** · Buffer/Driver/Transceiver · TSSOP-20++SN74LVC541APWR from Texas Instruments, in a TSSOP-20. Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.++## Pinout++| Pin | Name | Type | Function |+|---|---|---|---|+| 1 | OE1 | input | Output enable 1, active low. Must be low (together with OE2) to enable the eight Y outputs; when high, all Y outputs are placed in the high-impedance (3-state) mode. |+| 2 | A1 | input | Input for channel 1 buffer. CMOS logic input, accepts up to 5.5V regardless of VCC (mixed-voltage translation supported down to VCC = 1.65V). |+| 3 | A2 | input | Input for channel 2 buffer. CMOS logic input, accepts up to 5.5V regardless of VCC. |+| 4 | A3 | input | Input for channel 3 buffer. CMOS logic input, accepts up to 5.5V regardless of VCC. |+| 5 | A4 | input | Input for channel 4 buffer. CMOS logic input, accepts up to 5.5V regardless of VCC. |+| 6 | A5 | input | Input for channel 5 buffer. CMOS logic input, accepts up to 5.5V regardless of VCC. |+| 7 | A6 | input | Input for channel 6 buffer. CMOS logic input, accepts up to 5.5V regardless of VCC. |+| 8 | A7 | input | Input for channel 7 buffer. CMOS logic input, accepts up to 5.5V regardless of VCC. |+| 9 | A8 | input | Input for channel 8 buffer. CMOS logic input, accepts up to 5.5V regardless of VCC. |+| 10 | GND | power_in | Ground reference (0 V) for the device. |+| 11 | Y8 | tri_state | 3-state output for channel 8. Drives IOH up to -24 mA / IOL up to 24 mA at VCC = 3 V; enters high-Z when either OE1 or OE2 is high. |+| 12 | Y7 | tri_state | 3-state output for channel 7. Drives IOH up to -24 mA / IOL up to 24 mA at VCC = 3 V; enters high-Z when either OE1 or OE2 is high. |+| 13 | Y6 | tri_state | 3-state output for channel 6. Drives IOH up to -24 mA / IOL up to 24 mA at VCC = 3 V; enters high-Z when either OE1 or OE2 is high. |+| 14 | Y5 | tri_state | 3-state output for channel 5. Drives IOH up to -24 mA / IOL up to 24 mA at VCC = 3 V; enters high-Z when either OE1 or OE2 is high. |+| 15 | Y4 | tri_state | 3-state output for channel 4. Drives IOH up to -24 mA / IOL up to 24 mA at VCC = 3 V; enters high-Z when either OE1 or OE2 is high. |+| 16 | Y3 | tri_state | 3-state output for channel 3. Drives IOH up to -24 mA / IOL up to 24 mA at VCC = 3 V; enters high-Z when either OE1 or OE2 is high. |+| 17 | Y2 | tri_state | 3-state output for channel 2. Drives IOH up to -24 mA / IOL up to 24 mA at VCC = 3 V; enters high-Z when either OE1 or OE2 is high. |+| 18 | Y1 | tri_state | 3-state output for channel 1. Drives IOH up to -24 mA / IOL up to 24 mA at VCC = 3 V; enters high-Z when either OE1 or OE2 is high. |+| 19 | OE2 | input | Output enable 2, active low. Must be low (together with OE1) to enable the eight Y outputs; when high, all Y outputs are placed in the high-impedance (3-state) mode. |+| 20 | VCC | power_in | Positive supply. Operating range 1.65 V to 3.6 V (SN74LVC541A); absolute maximum 6.5 V. Bypass with a local decoupling capacitor to GND. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | Texas Instruments |+| Package | TSSOP-20 |+| Category | Logic |+| Pins | 20 |++## Ordering variants++- `SN74LVC541APWRPW`+- `SN74LVC541APWRPWR`+- `SN74LVC541APWRDW`+- `SN74LVC541APWRDWR`+- `SN74LVC541APWRDB`+- `SN74LVC541APWRDBR`+- `SN74LVC541APWRNS`+- `SN74LVC541APWRNSR`+- `SN74LVC541APWRDGS`+- `SN74LVC541APWRDGSR`+- `SN74LVC541APWRDGV`+- `SN74LVC541APWRDGVR`+- `SN74LVC541APWRRKS`+- `SN74LVC541APWRRKSR`+- `SN74LVC541APWRRGY`+- `SN74LVC541APWRRGYR`+- `SN74LVC541APWRJ`+- `SN74LVC541APWRW`+- `SN74LVC541APWRFK`++## CAD (KiCad official)++- Symbol: `SN74LVC541APWR`+- Footprint: `Package_SO:TSSOP-20_4.4x6.5mm_P0.65mm`+- 3D model: TSSOP-20 (KiCad packages3D, STEP)++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [Texas Instruments datasheet](https://www.ti.com/lit/ds/symlink/sn74lvc541a.pdf) (46 pp, sha256 `044fc874741c11f1`, retrieved 2026-08-17, tier: manufacturer)+- **Extractor:** `ds2sf` (Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate.+- **CAD:** KiCad official libraries (CC-BY-SA 4.0).++[Datasheet PDF](docs/sn74lvc541apwr-datasheet.pdf)

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