PCA9517ATP,147 NXP Semiconductors, PCA9517ATP,147 Datasheet

no-image

PCA9517ATP,147

Manufacturer Part Number
PCA9517ATP,147
Description
Interface - Signal Buffers, Repeaters LVL XLATE 5.5V 2CHAN
Manufacturer
NXP Semiconductors
Datasheet

Specifications of PCA9517ATP,147

Rohs
yes
Package / Case
HWSON-8
Power Dissipation
100 mW
Factory Pack Quantity
4000
1. General description
The PCA9517A is a CMOS integrated circuit that provides level shifting between low
voltage (down to 0.9 V) and higher voltage (2.7 V to 5.5 V) I
applications. While retaining all the operating modes and features of the I
during the level shifts, it also permits extension of the I
buffering for both the data (SDA) and the clock (SCL) lines, thus enabling two buses of
400 pF. Using the PCA9517A enables the system designer to isolate two halves of a bus
for both voltage and capacitance. The SDA and SCL pins are overvoltage tolerant and are
high-impedance when the PCA9517A is unpowered.
The 2.7 V to 5.5 V bus port B drivers behave much like the drivers on the PCA9515A
device, while the adjustable voltage bus port A drivers drive more current and eliminate
the static offset voltage. This results in a LOW on the port B translating into a nearly 0 V
LOW on the port A which accommodates smaller voltage swings of lower voltage logic.
The static offset design of the port B PCA9517A I/O drivers prevent them from being
connected to another device that has rise time accelerator including the PCA9510,
PCA9511, PCA9512, PCA9513, PCA9514, PCA9515A, PCA9516A, PCA9517A (port B),
or PCA9518. Port A of two or more PCA9517As can be connected together, however, to
allow a star topography with port A on the common bus, and port A can be connected
directly to any other buffer with static or dynamic offset voltage. Multiple PCA9517As can
be connected in series, port A to port B, with no build-up in offset voltage with only time of
flight delays to consider.
The PCA9517A drivers are not enabled unless V
2.5 V. The EN pin can also be used to turn the drivers on and off under system control.
Caution should be observed to only change the state of the enable pin when the bus is
idle.
The output pull-down on the port B internal buffer LOW is set for approximately 0.5 V,
while the input threshold of the internal buffer is set about 70 mV lower (0.43 V). When the
port B I/O is driven LOW internally, the LOW is not recognized as a LOW by the input.
This prevents a lock-up condition from occurring. The output pull-down on port A drives a
hard LOW and the input level is set at 0.3V
LOW level in systems where the low voltage side supply voltage is as low as 0.9 V.
Table 1.
[1]
[2]
Parameter
electrostatic discharge, HBM
PCA9517A
Level translating I
Rev. 4 — 9 May 2012
PCA9517 will be discontinued in several years, so move to the PCA9517A for all new designs and system
updates.
The PCA9517A is an improved hot swap and ESD version of the PCA9517, but otherwise operates
identically and should be used for all new designs and system updates.
PCA9517 and PCA9517A comparison
2
C-bus repeater
CC(A)
PCA9517
> 2 kV
to accommodate the need for a lower
CC(A)
[1]
is above 0.8 V and V
2
C-bus by providing bidirectional
2
C-bus or SMBus
Product data sheet
PCA9517A
> 5.5 kV
2
C-bus system
CC(B)
[2]
is above

Related parts for PCA9517ATP,147

PCA9517ATP,147 Summary of contents

Page 1

PCA9517A Level translating I Rev. 4 — 9 May 2012 1. General description The PCA9517A is a CMOS integrated circuit that provides level shifting between low voltage (down to 0.9 V) and higher voltage (2 5 ...

Page 2

... NXP Semiconductors 2. Features and benefits  2 channel, bidirectional buffer isolates capacitance and allows 400 pF on either side of the device  Voltage level translation from 0 5.5 V and from 2 5.5 V  Footprint and functional replacement for PCA9515/15A  C-bus and SMBus compatible  ...

Page 3

... NXP Semiconductors 4. Functional diagram Fig 1. 5. Pinning information 5.1 Pinning Fig 2. Fig 4. PCA9517A Product data sheet V CC(A) PCA9517A SDAA SCLA V CC(B) pull-up resistor EN Functional diagram of PCA9517A CC(A) CC(B) SCLA 2 7 SCLB PCA9517AD 3 6 SDAA SDAB GND 002aad466 Pin configuration for SO8 terminal 1 index area ...

Page 4

... NXP Semiconductors 5.2 Pin description Table 3. Symbol V CC(A) SCLA SDAA GND EN SDAB SCLB V CC(B) [1] HWSON8 package die supply ground is connected to both GND pin and exposed center pad. GND pin must be connected to supply ground for proper device operation. For enhanced thermal, electrical, and board level performance, the exposed pad needs to be soldered to the board using a corresponding thermal pad on the board and for proper head conduction through the board, thermal vias need to be incorporated in the printed-circuit board in the thermal pad region ...

Page 5

... NXP Semiconductors 6.1 Enable The EN pin is active HIGH with an internal pull- when the repeater is active. This can be used to isolate a badly behaved slave on power-up until after the system power-up reset. It should never change state during C-bus operation because disabling during a bus operation will hang the bus and ...

Page 6

... NXP Semiconductors When port A of the PCA9517A is pulled LOW by a driver on the I detects the falling edge when it goes below 0.3V port B to turn on, causing port B to pull down to about 0.5 V. When port B of the PCA9517A falls, first a CMOS hysteresis type input detects the falling edge and causes the internal driver on port A to turn on and pull the port A pin down to ground ...

Page 7

... NXP Semiconductors Fig 6. 10 kΩ 10 kΩ SDAA SDA SCLA SCL BUS PCA9517A MASTER EN Fig 7. Typical series application PCA9517A Product data sheet V CC(A) 10 kΩ 10 kΩ SDA SCL BUS MASTER Typical star application kΩ 10 kΩ 10 kΩ SDAB ...

Page 8

... NXP Semiconductors Fig 8. SCL SDA Fig 9. SCL SDA Fig 10. Bus B (2 5.5 V) waveform PCA9517A Product data sheet CARD 1 CARD Ω 75 Ω Remark: Figure 9 and Figure 10 reference on Bus A side. Typical application of PCA9517A driving a short cable 9th clock pulse acknowledge Bus A (0 ...

Page 9

... NXP Semiconductors 8. Limiting values Table 4. Limiting values In accordance with the Absolute Maximum Rating System (IEC 60134). Symbol Parameter V supply voltage port B CC(B) V supply voltage port A CC(A) V voltage on an input/output pin I/O I input/output current I/O I input current I P total power dissipation tot T storage temperature ...

Page 10

... NXP Semiconductors 9. Static characteristics Table 5. Static characteristics 5.5 V; GND = Symbol Parameter Supplies V supply voltage port B CC(B) V supply voltage port A CC(A) I supply current on pin V CC(VCC(A)) I HIGH-level supply current CCH I LOW-level supply current CCL I contention port A supply current CC(A)c Input and output SDAB and SCLB ...

Page 11

... NXP Semiconductors Table 5. Static characteristics 5.5 V; GND = Symbol Parameter Enable V LOW-level input voltage IL V HIGH-level input voltage IH I LOW-level input current on IL(EN) pin EN I input leakage current LI C input capacitance i [1] LOW-level supply voltage. [2] V specification is for the first LOW level seen by the SDAB/SCLB lines SDAB/SCLB lines ...

Page 12

... NXP Semiconductors 10.1 AC waveforms input 1 PHL 80 % output 0 THL Fig 11. Propagation delay and transition times; port B to port A Fig 13. Propagation delay 11. Test information Fig 14. Test circuit for open-drain outputs PCA9517A Product data sheet 3.0 V 1 PLH 1 0 TLH 002aad642 Fig 12. Propagation delay and transition times ...

Page 13

... NXP Semiconductors 12. Package outline SO8: plastic small outline package; 8 leads; body width 3 pin 1 index 1 DIMENSIONS (inch dimensions are derived from the original mm dimensions) A UNIT max. 0.25 1.45 mm 1.75 0.25 0.10 1.25 0.010 0.057 inches 0.069 0.01 0.004 0.049 Notes 1. Plastic or metal protrusions of 0.15 mm (0.006 inch) maximum per side are not included. ...

Page 14

... NXP Semiconductors TSSOP8: plastic thin shrink small outline package; 8 leads; body width pin 1 index 1 e DIMENSIONS (mm are the original dimensions UNIT max. 0.15 0.95 mm 1.1 0.25 0.05 0.80 Notes 1. Plastic or metal protrusions of 0.15 mm maximum per side are not included. 2. Plastic or metal protrusions of 0.25 mm maximum per side are not included. ...

Page 15

... NXP Semiconductors HWSON8: plastic thermal enhanced very very thin small outline package; no leads; 8 terminals; body 0. terminal 1 index area terminal 1 index area Dimensions (1) Unit max 0.80 0.05 0.65 mm nom 0.75 0.02 0.55 0.2 min 0.70 0.00 0.45 Note 1. Plastic or metal protrusions of 0.075 mm maximum per side are not included. ...

Page 16

... NXP Semiconductors 13. Soldering of SMD packages This text provides a very brief insight into a complex technology. A more in-depth account of soldering ICs can be found in Application Note AN10365 “Surface mount reflow soldering description”. 13.1 Introduction to soldering Soldering is one of the most common methods through which packages are attached to Printed Circuit Boards (PCBs), to form electrical circuits ...

Page 17

... NXP Semiconductors 13.4 Reflow soldering Key characteristics in reflow soldering are: • Lead-free versus SnPb soldering; note that a lead-free reflow process usually leads to higher minimum peak temperatures (see reducing the process window • Solder paste printing issues including smearing, release, and adjusting the process window for a mix of large and small components on one board • ...

Page 18

... NXP Semiconductors Fig 18. Temperature profiles for large and small components For further information on temperature profiles, refer to Application Note AN10365 “Surface mount reflow soldering description”. 14. Abbreviations Table 9. Acronym BOM CDM CMOS EOL ESD HBM 2 I C-bus I/O RC SMBus PCA9517A Product data sheet ...

Page 19

... NXP Semiconductors 15. Revision history Table 10. Revision history Document ID Release date PCA9517A v.4 20120509 • Modifications: Table 1 “PCA9517 and PCA9517A – Table note [1] – Table note [2] • Table 2 “Ordering information” – Added type number PCA9517ADP/DG – Added • Figure 3 “Pin configuration for TSSOP8 PCA9517A v ...

Page 20

... Terms and conditions of commercial sale of NXP Semiconductors. Right to make changes — NXP Semiconductors reserves the right to make changes to information published in this document, including without limitation specifications and product descriptions, at any time and without notice ...

Page 21

... For sales office addresses, please send an email to: PCA9517A Product data sheet own risk, and (c) customer fully indemnifies NXP Semiconductors for any liability, damages or failed product claims resulting from customer design and use of the product for automotive applications beyond NXP Semiconductors’ ...

Page 22

... NXP Semiconductors 18. Contents 1 General description . . . . . . . . . . . . . . . . . . . . . . 1 2 Features and benefits . . . . . . . . . . . . . . . . . . . . 2 3 Ordering information . . . . . . . . . . . . . . . . . . . . . 2 4 Functional diagram . . . . . . . . . . . . . . . . . . . . . . 3 5 Pinning information . . . . . . . . . . . . . . . . . . . . . . 3 5.1 Pinning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 5.2 Pin description . . . . . . . . . . . . . . . . . . . . . . . . . 4 6 Functional description . . . . . . . . . . . . . . . . . . . 4 6.1 Enable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 2 6.2 I C-bus systems . . . . . . . . . . . . . . . . . . . . . . . . 5 7 Application design-in information . . . . . . . . . . 5 8 Limiting values Static characteristics Dynamic characteristics . . . . . . . . . . . . . . . . . 11 10 ...

Related keywords