pca9549bs NXP Semiconductors, pca9549bs Datasheet

pca9549bs

Manufacturer Part Number

pca9549bs

Description

Octal Bus Switch With Individually I2c-bus Controlled Enables

Manufacturer

NXP Semiconductors

Datasheet

1.PCA9549BS.pdf (24 pages)

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1. General description

2. Features

The PCA9549 provides eight bits of high speed TTL-compatible bus switching controlled

by the I

with minimal propagation delay. Any individual A to B channel or combination of channels

can be selected via the I

Port A to Port B, or vice versa. When the I

creating a high-impedance state between the two ports, which stops the data ﬂow.

An active LOW reset input (RESET) allows the PCA9549 to recover from a situation

where the I

state machine and causes all the bits to be open, as does the internal power-on reset

function.

Three address pins allow up to eight devices on the same bus.

PCA9549

Octal bus switch with individually I

Rev. 01 — 11 July 2006

8-bit bus switch (CBT)

Active LOW RESET input

3 address pins allowing up to 8 devices on the I

Bit selection via I

Power-up with all bits deselected

Low R

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, 200 V MM per

JESD22-A115 and 1000 V CDM per JESD22-C101

Latch-up testing is done to JEDEC Standard JESD78 which exceeds 100 mA

Packages offered: SO24, TSSOP24, HVQFN24

C-bus interface logic; compatible with SMBus standards

switch connection between two ports

C-bus. The low ON-state resistance of the switch allows connections to be made

C-bus is stuck in a LOW state. Pulling the RESET pin LOW resets the I

switches

C-bus bit is HIGH (logic 1), the switch is on and data can ﬂow from

C-bus, in any combination

C-bus, determined by the contents of the programmable Control

C-bus bit is LOW (logic 0), the switch is open,

C-bus

C-bus controlled enables

Product data sheet

C-bus

Related parts for pca9549bs

pca9549bs Summary of contents

Page 1

PCA9549 Octal bus switch with individually I Rev. 01 — 11 July 2006 1. General description The PCA9549 provides eight bits of high speed TTL-compatible bus switching controlled by the I with minimal propagation delay. Any individual ...

Page 2

... Philips Semiconductors 3. Ordering information Table 1. Type number PCA9549D PCA9549PW PCA9549BS 3.1 Ordering options Table 2. Type number PCA9549D PCA9549PW PCA9549BS 4. Block diagram RESET SCL SDA Fig 1. Block diagram PCA9549_1 Product data sheet Octal bus switch with individually I ...

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Philips Semiconductors 5.2 Pin description Table 3. Symbol A0 A1 RESET SCL SDA V DD [1] HVQFN package die supply ground ...

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Philips Semiconductors 6. Functional description 6.1 Device addressing Following a START condition, the bus master must output the address of the slave it is accessing. The address of the PCA9549 is shown in internal pull-up resistors are incorporated on the ...

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Philips Semiconductors Table 4. Write = channel selection; read = channel status [1] Several bits can be enabled at the same time. For example ...

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Philips Semiconductors (1) maximum (2) typical (3) minimum Fig 7. V Figure 7 PCA9549 is only tested at the points speciﬁed in order for the PCA9549 to act as a voltage translator, the V or lower than the lowest bus ...

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Philips Semiconductors 7. Characteristics of the I 2 The I C-bus is for 2-way, 2-line communication between different ICs or modules. The two lines are a serial data line (SDA) and a serial clock line (SCL). Both lines must be ...

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Philips Semiconductors SDA SCL MASTER TRANSMITTER/ RECEIVER Fig 10. System conﬁguration 7.3 Acknowledge The number of data bytes transferred between the START and the STOP conditions from transmitter to receiver is not limited. Each byte of eight bits is followed ...

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Philips Semiconductors 7.4 Bus transactions Data is transmitted to the PCA9549 control register using the Write mode as shown in Figure 12. SDA Fig 12. Write control register Data is read from the PCA9549 using the Read mode as shown ...

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Philips Semiconductors 9. Static characteristics Table 6. Static characteristics See Table 7 on page 12 for Symbol Parameter ...

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Philips Semiconductors Table 7. Static characteristics See Table 6 on page 11 for Symbol Parameter Supply V supply ...

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Philips Semiconductors 10. Dynamic characteristics Table 8. Dynamic characteristics Symbol Parameter t propagation delay PD f SCL clock frequency SCL t bus free time between a STOP and BUF START condition t hold time (repeated) START condition HD;STA t LOW ...

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Philips Semiconductors SDA t BUF t LOW SCL t HD;STA P S Fig 14. Deﬁnition of timing on the I SCL SDA RESET 50 % Fig 15. Deﬁnition of RESET timing PCA9549_1 Product data sheet Octal bus switch with individually ...

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Philips Semiconductors 11. Application information C-bus/SMBus MASTER Remark: B can also be input and A can also be output as shown in bit 8. Fig 16. Typical application Fig 17. Custom multiplexer or ...

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Philips Semiconductors Fig 18. 2 channel 4-to-1 multiplexer or demultiplexer 12. Test information Fig 19. Test circuit PCA9549_1 Product data sheet Octal bus switch with individually PULSE GENERATOR C = load capacitance includes jig ...

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Philips Semiconductors 13. Package outline SO24: plastic small outline package; 24 leads; body width 7 pin 1 index 1 e DIMENSIONS (inch dimensions are derived from the original mm dimensions) A UNIT ...

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Philips Semiconductors TSSOP24: plastic thin shrink small outline package; 24 leads; body width 4 pin 1 index 1 DIMENSIONS (mm are the original dimensions) A UNIT max. 0.15 0.95 mm ...

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Philips Semiconductors HVQFN24: plastic thermal enhanced very thin quad flat package; no leads; 24 terminals; body 0.85 mm terminal 1 index area terminal 1 24 index area DIMENSIONS (mm are ...

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Philips Semiconductors 14. Soldering 14.1 Introduction to soldering surface mount packages There is no soldering method that is ideal for all surface mount IC packages. Wave soldering can still be used for certain surface mount ICs, but it is not ...

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Philips Semiconductors – larger than or equal to 1.27 mm, the footprint longitudinal axis is preferred to be parallel to the transport direction of the printed-circuit board; – smaller than 1.27 mm, the footprint longitudinal axis must be parallel to ...

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Philips Semiconductors [3] These transparent plastic packages are extremely sensitive to reﬂow soldering conditions and must on no account be processed through more than one soldering cycle or subjected to infrared reﬂow soldering with peak temperature exceeding 217 C body ...

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Philips Semiconductors 17. Legal information 17.1 Data sheet status [1][2] Document status Product status Objective [short] data sheet Development Preliminary [short] data sheet Qualiﬁcation Product [short] data sheet Production [1] Please consult the most recently issued document before initiating or ...

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Philips Semiconductors 19. Contents 1 General description . . . . . . . . . . . . . . . . . . . . . . 1 2 Features . . . . . . . . ...

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