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PCA9545AD112中文資料恩智浦數(shù)據(jù)手冊PDF規(guī)格書

PCA9545AD112
廠商型號

PCA9545AD112

功能描述

4-channel I2C-bus switch with interrupt logic and reset

文件大小

455.33 Kbytes

頁面數(shù)量

33

生產廠商 NXP Semiconductors
企業(yè)簡稱

nxp恩智浦

中文名稱

恩智浦半導體公司官網(wǎng)

原廠標識
數(shù)據(jù)手冊

下載地址一下載地址二到原廠下載

更新時間

2025-5-28 9:59:00

人工找貨

PCA9545AD112價格和庫存,歡迎聯(lián)系客服免費人工找貨

PCA9545AD112規(guī)格書詳情

General description

The PCA9545A is a quad bidirectional translating switch controlled via the I2C-bus. The

SCL/SDA upstream pair fans out to four downstream pairs, or channels. Any individual

SCx/SDx channel or combination of channels can be selected, determined by the

contents of the programmable control register. Four interrupt inputs, INT0 to INT3, one

for each of the downstream pairs, are provided. One interrupt output, INT, acts as an

AND of the four interrupt inputs.

An active LOW reset input allows the PCA9545A to recover from a situation where one

of the downstream I2C-buses is stuck in a LOW state. Pulling the RESET pin LOW resets

the I2C-bus state machine and causes all the channels to be deselected as does the

internal power-on reset function.

The pass gates of the switches are constructed such that the VDD pin can be used to limit

the maximum high voltage which is passed by the PCA9545A. This allows the use of

different bus voltages on each pair, so that 1.8 V or 2.5 V or 3.3 V parts can communicate

with 5 V parts without any additional protection. External pull-up resistors pull the bus up

to the desired voltage level for each channel. All I/O pins are 5 V tolerant.

Features and benefits

? 1-of-4 bidirectional translating switches

? I2C-bus interface logic; compatible with SMBus standards

? Four active LOW interrupt inputs

? Active LOW interrupt output

? Active LOW reset input

? Two address pins allowing up to four devices on the I2C-bus

? Channel selection via I2C-bus, in any combination

? Power-up with all switch channels deselected

? Low Ron switches

? Allows voltage level translation between 1.8 V, 2.5 V, 3.3 V and 5 V buses

? No glitch on power-up

? Supports hot insertion

? Low standby current

? Operating power supply voltage range of 2.3 V to 5.5 V

? 5 V tolerant Inputs

? 0 Hz to 400 kHz clock frequency

? ESD protection exceeds 2000 V HBM per JESD22-A114 and 1000 V CDM per

JESD22-C101

? Latch-up protection exceeds 100 mA per JESD78

? Three packages offered: SO20, TSSOP20, and HVQFN20

供應商 型號 品牌 批號 封裝 庫存 備注 價格
TI
23+
NA
20000
詢價
TI/德州儀器
23+
SSOP
50000
全新原裝正品現(xiàn)貨,支持訂貨
詢價
TI
23+
TVSOP20
8650
受權代理!全新原裝現(xiàn)貨特價熱賣!
詢價
TI
22+
20TVSOP
9000
原廠渠道,現(xiàn)貨配單
詢價
TI/德州儀器
23+
TVSOP20
87845
原廠授權一級代理,專業(yè)海外優(yōu)勢訂貨,價格優(yōu)勢、品種
詢價
TI
24+
20-TVSOP
4906
進口原裝現(xiàn)貨
詢價
恩XP
24+
SO20
4820
只做原裝正品
詢價
TI
1936+
TVSOP20
6852
只做原裝正品現(xiàn)貨或訂貨假一賠十!
詢價
TI
23+
20-TVSOP
65480
詢價
TI
23+
TVSOP20
4500
全新原裝、誠信經(jīng)營、公司現(xiàn)貨銷售!
詢價