TCAL9539R
- Operating power-supply voltage range of 1.08V to 3.6V
- Low standby current consumption of 1µA typical at 1.8mV
- 1MHz fast mode plus I2C bus
- Hardware address pin allows two devices on the same I2C, SMBus bus
- Active-low reset input
(RESET )
- Sticky registers retain values when device is reset with RESET
- I2C functional state machine is reset
- Open-drain active-low interrupt output (INT )
- Input or output configuration register
- Polarity inversion register
- Configurable I/O drive strength register
- Pull-up and pull-down resistor configuration register
- Internal power-on reset
- Noise filter on SCL or SDA inputs
- Latched outputs with high-current drive maximum capability for directly driving LEDs
- Latch-up performance exceeds 100mA per JESD 78, class II
- ESD protection exceeds JESD 22
- 2000V Human-body model (A114-A)
- 1000V Charged-device model (C101)
The TCAL9539R device provides general purpose parallel input/output (I/O) expansion for the two-line bidirectional I2C bus (or SMBus) protocol and is designed for 1.08V to 3.6V VCC operation.
The device supports 100kHz (Standard-mode), 400kHz (Fast-mode), and 1MHz (fast-mode-plus) I2C clock frequencies. I/O expanders such as the TCAL9539R provide a simple solution when additional I/Os are needed for switches, sensors, push-buttons, LEDs, fans, and so on.
The TCAL9539R has Agile I/O ports which include additional features designed to enhance the I/O performance in terms of speed, power consumption and EMI. The additional features are: programmable output drive strength, programmable pull-up and pull-down resistors, latchable inputs, maskable interrupt, interrupt status register, and programmable open-drain or push-pull outputs.
The RESET pin only resets the I2C state machine when stuck to regain access to the I2C. I/O pins and sticky registers retain the last configured state while the I2C is being re-initialized.
기술 자료
| 상위 문서 | 유형 | 직함 | 형식 옵션 | 최신 영어 버전 다운로드 | 날짜 |
|---|---|---|---|---|---|
| * | 데이터 시트 | TCAL9539R Low-Voltage 16-Bit I2C-Bus, SMBus I/O Expander with Interrupt Output, Reset, and Configuration Registers datasheet | PDF | HTML | 2025. 4. 1 |
설계 및 개발
추가 조건 또는 필수 리소스는 사용 가능한 경우 아래 제목을 클릭하여 세부 정보 페이지를 확인하세요.
IO-EXPANDER-EVM — IO-확장기-EVM: I2C 및 SMBus IO 확장기 평가 모듈
IO 확장기 평가 모듈(EVM)을 사용하면 TI의 SMBus 및 I2C IO 확장기 라인 디바이스 포트폴리오를 평가할 수 있습니다. TCA6424A 및 TCA9539는 보드에 설치됩니다. 24핀 TSSOP 풋프린트는TCA6408A, TCA6416A, TCA9534, TCA9534A, TCA9535, TCA9538, TCA9554, TCA9554A 및 TCA9555를 지원합니다.
| 패키지 | 핀 | CAD 기호, 풋프린트 및 3D 모델 |
|---|---|---|
| TSSOP (PW) | 24 | Ultra Librarian |