component
RS540TXTSS20-G
Public Made by Adomby adom
Jiangsu RUNIC Tech Buffers, Drivers, Receivers, Transceivers, TSSOP-20. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
main
RS540TXTSS20-G
Jiangsu RUNIC Tech · Buffers, Drivers, Receivers, Transceivers · TSSOP-20
RS540TXTSS20-G from Jiangsu RUNIC Tech, in a TSSOP-20. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.
Pinout
| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | OE1 | input | Active-low output enable; pull OE1 high to place all outputs in the 3-state (high-impedance) mode. |
| 2 | A0 | input | Data input for channel 0; recommended input voltage range is 0 V to 5.5 V and the output Y0 is its inverse. |
| 3 | A1 | input | Data input for channel 1; recommended input voltage range is 0 V to 5.5 V and the output Y1 is its inverse. |
| 4 | A2 | input | Data input for channel 2; recommended input voltage range is 0 V to 5.5 V and the output Y2 is its inverse. |
| 5 | A3 | input | Data input for channel 3; recommended input voltage range is 0 V to 5.5 V and the output Y3 is its inverse. |
| 6 | A4 | input | Data input for channel 4; recommended input voltage range is 0 V to 5.5 V and the output Y4 is its inverse. |
| 7 | A5 | input | Data input for channel 5; recommended input voltage range is 0 V to 5.5 V and the output Y5 is its inverse. |
| 8 | A6 | input | Data input for channel 6; recommended input voltage range is 0 V to 5.5 V and the output Y6 is its inverse. |
| 9 | A7 | input | Data input for channel 7; recommended input voltage range is 0 V to 5.5 V and the output Y7 is its inverse. |
| 10 | GND | power_in | Ground reference for the device. |
| 11 | Y7 | output | Inverting data output of channel 7 (complement of A7); goes high-impedance when either output enable is high. |
| 12 | Y6 | output | Inverting data output of channel 6 (complement of A6); goes high-impedance when either output enable is high. |
| 13 | Y5 | output | Inverting data output of channel 5 (complement of A5); goes high-impedance when either output enable is high. |
| 14 | Y4 | output | Inverting data output of channel 4 (complement of A4); goes high-impedance when either output enable is high. |
| 15 | Y3 | output | Inverting data output of channel 3 (complement of A3); goes high-impedance when either output enable is high. |
| 16 | Y2 | output | Inverting data output of channel 2 (complement of A2); goes high-impedance when either output enable is high. |
| 17 | Y1 | output | Inverting data output of channel 1 (complement of A1); goes high-impedance when either output enable is high. |
| 18 | Y0 | output | Inverting data output of channel 0 (complement of A0); goes high-impedance when either output enable is high. |
| 19 | OE2 | input | Active-low output enable; pull OE2 high to place all outputs in the 3-state (high-impedance) mode. |
| 20 | VCC | power_in | Supply voltage, specified from 2.0 V to 5.5 V. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Jiangsu RUNIC Tech |
| Package | TSSOP-20 |
| Category | Logic |
| Pins | 20 |
Electrical characteristics
Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).
| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| VCC Supply Voltage Range | VCC | -0.5 | 6.5 | V | 7 | ||
| Input Voltage Range, A port | VI | -0.5 | 6.5 | V | A port | 7 | |
| Input Voltage Range, control inputs | VI | -0.5 | 6.5 | V | Control inputs | 7 | |
| Voltage applied to any output in high-impedance or power-off state, Y port | VO | -0.5 | 6.5 | V | Y port; high-impedance or power-off state | 7 | |
| Voltage applied to any output in high or low state, Y port | VO | -0.5 | V | Y port; high or low state | 7 | ||
| Input clamp current | IIK | -50 | mA | VI<0 | 7 | ||
| Output clamp current | IOK | -50 | mA | VO<0 | 7 | ||
| Continuous output current | IO | -50 | 50 | mA | 7 | ||
| Continuous current through VCC or GND | -100 | 100 | mA | 7 | |||
| Package thermal impedance, TSSOP-20 | θJA | 40 | °C/W | JESD-51; packages soldered directly onto PCB | 7 | ||
| Junction Temperature | TJ | -40 | 150 | °C | 7 | ||
| Storage temperature | Tstg | -65 | 150 | °C | 7 | ||
| Supply Voltage | VCC | 2 | 5.5 | V | 8 | ||
| High-Level Input Voltage | VIH | 1 | V | VCC=2.0V | 8 | ||
| High-Level Input Voltage | VIH | 1.5 | V | VCC=3.0V | 8 | ||
| High-Level Input Voltage | VIH | 2 | V | VCC=4.5V to 5.5V | 8 | ||
| Low-Level Input Voltage | VIL | 0.3 | V | VCC=2.0V | 8 | ||
| Low-Level Input Voltage | VIL | 0.55 | V | VCC=3.0V | 8 | ||
| Low-Level Input Voltage | VIL | 0.8 | V | VCC=4.5V to 5.5V | 8 | ||
| Input Voltage | VI | 0 | 5.5 | V | 8 | ||
| Output Voltage | VO | 0 | V | 8 | |||
| High-Level Output Current | IOH | -8 | mA | VCC=3.0V to 3.6V | 8 | ||
| High-Level Output Current | IOH | -16 | mA | VCC=4.5V to 5.5V | 8 | ||
| Low-Level Output Current | IOL | 8 | mA | VCC=3.0V to 3.6V | 8 | ||
| Low-Level Output Current | IOL | 16 | mA | VCC=4.5V to 5.5V | 8 | ||
| Input transition rise or fall rate | Δt/Δv | 50 | ns/V | VCC=3.0V to 3.6V | 8 | ||
| Input transition rise or fall rate | Δt/Δv | 10 | ns/V | VCC=4.5V to 5.5V | 8 | ||
| Operating free-air temperature | TA | -40 | 125 | °C | 8 | ||
| High-Level Output Voltage | VOH | 2.8 | V | IOH = -8mA, VI = VIH; VCC 3.3V; Full temperature range | 9 | ||
| High-Level Output Voltage | VOH | 4.5 | V | IOH = -16mA, VI = VIH; VCC 5V; Full temperature range | 9 | ||
| Low-Level Output Voltage | VOL | 0.1 | V | IOL = 100µA, VI = VIL; VCC 2.0V to 5.5V; Full temperature range | 9 | ||
| Low-Level Output Voltage | VOL | 0.55 | V | IOL = 8mA, VI = VIL; VCC 3.3V; Full temperature range | 9 | ||
| Input leakage current | II | -1 | 1 | µA | VI = 5.5V or GND; VCC 5.5V; +25°C | 9 | |
| Input leakage current | II | -2 | 2 | µA | VI = 5.5V or GND; VCC 5.5V; Full temperature range | 9 | |
| Power-off leakage current | Ioff | -1 | 1 | µA | VI or VO = 0 to 5.5V; VCC 0V; +25°C | 9 | |
| Power-off leakage current | Ioff | -2 | 2 | µA | VI or VO = 0 to 5.5V; VCC 0V; Full temperature range | 9 | |
| Off-state (high-impedance) output current | IOZ | -1 | 1 | µA | VO = VCC or GND, VI = VIH or VIL; VCC 2.0V to 5.5V; +25°C | 9 | |
| Off-state (high-impedance) output current | IOZ | -2 | 2 | µA | VO = VCC or GND, VI = VIH or VIL; VCC 2.0V to 5.5V; Full temperature range | 9 | |
| Quiescent supply current | ICC | 1 | µA | VI = VCC or GND, IO = 0; VCC 2.0V to 5.5V; +25°C | 9 | ||
| Quiescent supply current | ICC | 5 | µA | VI = VCC or GND, IO = 0; VCC 2.0V to 5.5V; Full temperature range | 9 | ||
| Additional quiescent supply current per input | ICCT | 100 | µA | One input at 3.4 V, other inputs at GND or VCC; VCC 5.5V; Full temperature range | 9 | ||
| Propagation delay, An to Yn | tPLH/tPHL | 4.8 | 19.5 | ns | VCC = 2.0V | 9 | |
| Propagation delay, An to Yn | tPLH/tPHL | 1.8 | 7.8 | ns | VCC = 3.3V | 9 | |
| Propagation delay, An to Yn | tPLH/tPHL | 1.5 | 6.3 | ns | VCC = 5V | 9 | |
| Output disable time, OE to Yn | tPHZ/tPLZ | 4.8 | 22.2 | ns | VCC = 2.0V | 9 | |
| Output disable time, OE to Yn | tPHZ/tPLZ | 2.1 | 10 | ns | VCC = 3.3V | 9 | |
| Output disable time, OE to Yn | tPHZ/tPLZ | 1.3 | 7.7 | ns | VCC = 5V | 9 | |
| Output enable time, OE to Yn | tPZH/tPZL | 4.1 | 26.6 | ns | VCC = 2.0V | 9 | |
| Output enable time, OE to Yn | tPZH/tPZL | 1.7 | 11.6 | ns | VCC = 3.3V | 9 | |
| Output enable time, OE to Yn | tPZH/tPZL | 1.6 | 9.2 | ns | VCC = 5V | 9 |
CAD (KiCad official)
- Symbol:
RS540TXTSS20-G - Footprint:
Package_SO:TSSOP-20_4.4x6.5mm_P0.65mm - 3D model: TSSOP-20 (KiCad packages3D, STEP)
- 3D model files:
rs540txtss20-g-etched.step/rs540txtss20-g-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);rs540txtss20-g.step/rs540txtss20-g.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Jiangsu RUNIC Tech datasheet (16 pp, sha256
63fa0e32435d6e88, retrieved 2026-10-18, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-haiku-5-5(text), consensusclaude-sonnet-5-5(agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish. - CAD: KiCad official libraries (CC-BY-SA 4.0).
# RS540TXTSS20-G
**Jiangsu RUNIC Tech** · Buffers, Drivers, Receivers, Transceivers · TSSOP-20
RS540TXTSS20-G from Jiangsu RUNIC Tech, in a TSSOP-20. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.
## Pinout
| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | OE1 | input | Active-low output enable; pull OE1 high to place all outputs in the 3-state (high-impedance) mode. |
| 2 | A0 | input | Data input for channel 0; recommended input voltage range is 0 V to 5.5 V and the output Y0 is its inverse. |
| 3 | A1 | input | Data input for channel 1; recommended input voltage range is 0 V to 5.5 V and the output Y1 is its inverse. |
| 4 | A2 | input | Data input for channel 2; recommended input voltage range is 0 V to 5.5 V and the output Y2 is its inverse. |
| 5 | A3 | input | Data input for channel 3; recommended input voltage range is 0 V to 5.5 V and the output Y3 is its inverse. |
| 6 | A4 | input | Data input for channel 4; recommended input voltage range is 0 V to 5.5 V and the output Y4 is its inverse. |
| 7 | A5 | input | Data input for channel 5; recommended input voltage range is 0 V to 5.5 V and the output Y5 is its inverse. |
| 8 | A6 | input | Data input for channel 6; recommended input voltage range is 0 V to 5.5 V and the output Y6 is its inverse. |
| 9 | A7 | input | Data input for channel 7; recommended input voltage range is 0 V to 5.5 V and the output Y7 is its inverse. |
| 10 | GND | power_in | Ground reference for the device. |
| 11 | Y7 | output | Inverting data output of channel 7 (complement of A7); goes high-impedance when either output enable is high. |
| 12 | Y6 | output | Inverting data output of channel 6 (complement of A6); goes high-impedance when either output enable is high. |
| 13 | Y5 | output | Inverting data output of channel 5 (complement of A5); goes high-impedance when either output enable is high. |
| 14 | Y4 | output | Inverting data output of channel 4 (complement of A4); goes high-impedance when either output enable is high. |
| 15 | Y3 | output | Inverting data output of channel 3 (complement of A3); goes high-impedance when either output enable is high. |
| 16 | Y2 | output | Inverting data output of channel 2 (complement of A2); goes high-impedance when either output enable is high. |
| 17 | Y1 | output | Inverting data output of channel 1 (complement of A1); goes high-impedance when either output enable is high. |
| 18 | Y0 | output | Inverting data output of channel 0 (complement of A0); goes high-impedance when either output enable is high. |
| 19 | OE2 | input | Active-low output enable; pull OE2 high to place all outputs in the 3-state (high-impedance) mode. |
| 20 | VCC | power_in | Supply voltage, specified from 2.0 V to 5.5 V. |
## Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Jiangsu RUNIC Tech |
| Package | TSSOP-20 |
| Category | Logic |
| Pins | 20 |
## Electrical characteristics
Limits as printed in the datasheet (page.json `metadata.characteristics` carries them as data).
| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| VCC Supply Voltage Range | VCC | -0.5 | | 6.5 | V | | 7 |
| Input Voltage Range, A port | VI | -0.5 | | 6.5 | V | A port | 7 |
| Input Voltage Range, control inputs | VI | -0.5 | | 6.5 | V | Control inputs | 7 |
| Voltage applied to any output in high-impedance or power-off state, Y port | VO | -0.5 | | 6.5 | V | Y port; high-impedance or power-off state | 7 |
| Voltage applied to any output in high or low state, Y port | VO | -0.5 | | | V | Y port; high or low state | 7 |
| Input clamp current | IIK | -50 | | | mA | VI<0 | 7 |
| Output clamp current | IOK | -50 | | | mA | VO<0 | 7 |
| Continuous output current | IO | -50 | | 50 | mA | | 7 |
| Continuous current through VCC or GND | | -100 | | 100 | mA | | 7 |
| Package thermal impedance, TSSOP-20 | θJA | | | 40 | °C/W | JESD-51; packages soldered directly onto PCB | 7 |
| Junction Temperature | TJ | -40 | | 150 | °C | | 7 |
| Storage temperature | Tstg | -65 | | 150 | °C | | 7 |
| Supply Voltage | VCC | 2 | | 5.5 | V | | 8 |
| High-Level Input Voltage | VIH | 1 | | | V | VCC=2.0V | 8 |
| High-Level Input Voltage | VIH | 1.5 | | | V | VCC=3.0V | 8 |
| High-Level Input Voltage | VIH | 2 | | | V | VCC=4.5V to 5.5V | 8 |
| Low-Level Input Voltage | VIL | | | 0.3 | V | VCC=2.0V | 8 |
| Low-Level Input Voltage | VIL | | | 0.55 | V | VCC=3.0V | 8 |
| Low-Level Input Voltage | VIL | | | 0.8 | V | VCC=4.5V to 5.5V | 8 |
| Input Voltage | VI | 0 | | 5.5 | V | | 8 |
| Output Voltage | VO | 0 | | | V | | 8 |
| High-Level Output Current | IOH | -8 | | | mA | VCC=3.0V to 3.6V | 8 |
| High-Level Output Current | IOH | -16 | | | mA | VCC=4.5V to 5.5V | 8 |
| Low-Level Output Current | IOL | | | 8 | mA | VCC=3.0V to 3.6V | 8 |
| Low-Level Output Current | IOL | | | 16 | mA | VCC=4.5V to 5.5V | 8 |
| Input transition rise or fall rate | Δt/Δv | | | 50 | ns/V | VCC=3.0V to 3.6V | 8 |
| Input transition rise or fall rate | Δt/Δv | | | 10 | ns/V | VCC=4.5V to 5.5V | 8 |
| Operating free-air temperature | TA | -40 | | 125 | °C | | 8 |
| High-Level Output Voltage | VOH | 2.8 | | | V | IOH = -8mA, VI = VIH; VCC 3.3V; Full temperature range | 9 |
| High-Level Output Voltage | VOH | 4.5 | | | V | IOH = -16mA, VI = VIH; VCC 5V; Full temperature range | 9 |
| Low-Level Output Voltage | VOL | | | 0.1 | V | IOL = 100µA, VI = VIL; VCC 2.0V to 5.5V; Full temperature range | 9 |
| Low-Level Output Voltage | VOL | | | 0.55 | V | IOL = 8mA, VI = VIL; VCC 3.3V; Full temperature range | 9 |
| Input leakage current | II | -1 | | 1 | µA | VI = 5.5V or GND; VCC 5.5V; +25°C | 9 |
| Input leakage current | II | -2 | | 2 | µA | VI = 5.5V or GND; VCC 5.5V; Full temperature range | 9 |
| Power-off leakage current | Ioff | -1 | | 1 | µA | VI or VO = 0 to 5.5V; VCC 0V; +25°C | 9 |
| Power-off leakage current | Ioff | -2 | | 2 | µA | VI or VO = 0 to 5.5V; VCC 0V; Full temperature range | 9 |
| Off-state (high-impedance) output current | IOZ | -1 | | 1 | µA | VO = VCC or GND, VI = VIH or VIL; VCC 2.0V to 5.5V; +25°C | 9 |
| Off-state (high-impedance) output current | IOZ | -2 | | 2 | µA | VO = VCC or GND, VI = VIH or VIL; VCC 2.0V to 5.5V; Full temperature range | 9 |
| Quiescent supply current | ICC | | | 1 | µA | VI = VCC or GND, IO = 0; VCC 2.0V to 5.5V; +25°C | 9 |
| Quiescent supply current | ICC | | | 5 | µA | VI = VCC or GND, IO = 0; VCC 2.0V to 5.5V; Full temperature range | 9 |
| Additional quiescent supply current per input | ICCT | | | 100 | µA | One input at 3.4 V, other inputs at GND or VCC; VCC 5.5V; Full temperature range | 9 |
| Propagation delay, An to Yn | tPLH/tPHL | 4.8 | | 19.5 | ns | VCC = 2.0V | 9 |
| Propagation delay, An to Yn | tPLH/tPHL | 1.8 | | 7.8 | ns | VCC = 3.3V | 9 |
| Propagation delay, An to Yn | tPLH/tPHL | 1.5 | | 6.3 | ns | VCC = 5V | 9 |
| Output disable time, OE to Yn | tPHZ/tPLZ | 4.8 | | 22.2 | ns | VCC = 2.0V | 9 |
| Output disable time, OE to Yn | tPHZ/tPLZ | 2.1 | | 10 | ns | VCC = 3.3V | 9 |
| Output disable time, OE to Yn | tPHZ/tPLZ | 1.3 | | 7.7 | ns | VCC = 5V | 9 |
| Output enable time, OE to Yn | tPZH/tPZL | 4.1 | | 26.6 | ns | VCC = 2.0V | 9 |
| Output enable time, OE to Yn | tPZH/tPZL | 1.7 | | 11.6 | ns | VCC = 3.3V | 9 |
| Output enable time, OE to Yn | tPZH/tPZL | 1.6 | | 9.2 | ns | VCC = 5V | 9 |
## CAD (KiCad official)
- Symbol: `RS540TXTSS20-G`
- Footprint: `Package_SO:TSSOP-20_4.4x6.5mm_P0.65mm`
- 3D model: TSSOP-20 (KiCad packages3D, STEP)
- 3D model files: `rs540txtss20-g-etched.step` / `rs540txtss20-g-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `rs540txtss20-g.step` / `rs540txtss20-g.glb` are the bare package body.
## Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- **Datasheet:** [Jiangsu RUNIC Tech datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590931308141101056) (16 pp, sha256 `63fa0e32435d6e88`, retrieved 2026-10-18, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-haiku-5-5` (text), consensus `claude-sonnet-5-5` (agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish.
- **CAD:** KiCad official libraries (CC-BY-SA 4.0).
[Datasheet PDF](docs/rs540txtss20-g-datasheet.pdf)