IES5502T Hendon Semiconductors, IES5502T Datasheet

IES5502T

Manufacturer Part Number

IES5502T

Description

Buffers & Line Drivers 2.7-5.5V 6.1mA 45ns 400kHz

Manufacturer

Hendon Semiconductors

Datasheet

1.IES5502D.pdf (11 pages)

Specifications of IES5502T

Logic Family

IE5502

Number Of Channels Per Chip

Dual

Supply Voltage (max)

5.5 V

Supply Voltage (min)

2.7 V

Maximum Operating Temperature

85 C

Mounting Style

SMD/SMT

Minimum Operating Temperature

- 40 C

Supply Current

6.1 mA

Logic Type

Bidirectional Bus Buffer

Package / Case

SO-8

Lead Free Status / RoHS Status

Lead free / RoHS Compliant

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• Dual, bi-directional unity gain isolating buffer

• Hot insertion logic prevents data and clock bus

• Pre-charge minimises data corruption on live insertion

• Supports I

• Open-collector Ready output.

• Fast switching times allow operation in excess of 1MHz

• Enable allows bus segments to be disconnected

• Low current stand-by mode when not enabled

• High impedance ports when IC unpowered

• 4 mA (static) pull-down capability

• Low noise susceptibility

• Supports the connection of several buffers in series.

• Level shift bus voltages from 1.8 V to 15 V

• Backplane Management / Interconnect

• Telecommunications Systems including ATCA

• Desktop and Portable Computers including RAID

(1) I

2011 Jan 14, Revision 1.5

corruption for live backplane applications

(standard and high power modes) and PMbus

APPLICATIONS

BLOCK DIAGRAM

FEATURES

C is a trademark of NXP B.V.

(up to 15V)

Enable

SCL

SDA

(1)

1.8 - 15.0V

bus (standard and fast modes), SMBus

Backplane

Side

SDA-B

SCL-B

Under-Voltage

Ref.V

Hot - Insert

Logic

Fig.1 Block diagram

2.7 - 5.5V

Precharge

VCC

GND

Fast Dual Bi-Directional Bus Buffer

The IES5502 is a monolithic bipolar integrated circuit for

bus buffering in applications including I

PMbus, and other systems based on similar principles.It

extends the functionality of the IES5501 to include

hot-insertion logic for detecting stop and idle conditions,

making it ideal for live insertion into backplanes. The buffer

extends the bus load limit by buffering both the SCL and

SDA lines.

Hot insertion logic allows the IC to be plugged into live

backplanes without causing data corruption on the bus.

The open-collector READY signal indicates when the

connection has been made. Precharging of the backplane

ports minimises disruptions to the bus during hot insertion.

The enable function allows sections of the bus to be

isolated. Individual parts of the system can be brought

on-line sucessively. Bus level translation between a very

wide range of bus voltages, from 1.8 V to 15 V, is

supported. These features provide enormous flexibility in

interfacing systems of different technologies, operating

speeds and loads.

The unique operation of the IES5502 provides one of the

fastest response times of such bi-directional buffers. It

does this without the need for “rise-time accelerators”

which, combined with low noise margins, may cause

glitches outside of the I

GENERAL DESCRIPTION

IES5502

with Hot Insertion Logic

RDY

SCL-C

SDA-C

1.8 - 15.0V

Card

Side

C specification.

Contents are subject to the Disclaimer

1.8 - 15.0V

Product Specification

IES5502

Ready

SCL

SDA

C, SMBus,

Related parts for IES5502T

IES5502T Summary of contents

Page 1

... SCL-B 3 Backplane Side SDA SDA-B 6 © 2011 Hendon Semiconductors Pty. Ltd. , all rights reserved. 2011 Jan 14, Revision 1.5 Fast Dual Bi-Directional Bus Buffer 3 GENERAL DESCRIPTION The IES5502 is a monolithic bipolar integrated circuit for bus buffering in applications including I PMbus, and other systems based on similar principles.It ...

Page 2

PINNING INFORMATION 5.1 Pinning layout CL-C IES5502 3 S CL-B 4 GND Fig.2 Pinning diagram (SO8) 6 FUNCTIONAL DESCRIPTION 6 GND - DC supply pins CC The IES5502 can be driven from voltage ...

Page 3

Ready (RDY) - Buffer Connected Indicator The ready output (RDY) indicates that the buffer has met it’s enable conditions, and that communication will now occur. This is an open-collector transistor which is switched off when ready, allowing the voltage ...

Page 4

SYMBOL PARAMETER Buffer Ports V Bus voltage Sxx-x V Input low threshold voltage TL I Input low current IL I Output low sink current OL V Input-output offset voltage OFFSET (V = 3.3V Leakage current LEAK Enable V ...

Page 5

V Sxx(in) 120 3. (kΩ) PULLUP Fig.4 Offset Voltage, Vout - Vin 2011 Jan 14, Revision 1.5 Fast Dual Bi-Directional Bus Buffer V Sxx ...

Page 6

APPLICATION INFORMATION 9.1 Design Considerations Figure 6 shows a typical application for the IES5502. The IC can level shift between various bus voltages, without the need for additional external components. Higher bus voltages and currents outside the range of ...

Page 7

Application circuits 1. 600 600 V CC SCL SDA Bus Master 400kHz U1 R3 1.1k R5 600 2011 Jan 14, Revision 1.5 Fast Dual Bi-Directional Bus Buffer 3.3V 15V 15V C1 0.01µ 18k 3.9k 3.9k ...

Page 8

Fully-Bused Compliant Plug-in (Hot-Insert) ShMC Module (eg. AMC RRA* µP IES5502 Vin Vol=Vin+0.08 * RRA = Rise Rate Accelerator ALTERNATE IMPLEMENTATIONS µP I2C Bus NOTES: 1) The system shown here uses FET switches, however a valid alternative is ...

Page 9

... TYPE NUMBER NAME IES5502T SO8 plastic small outline package; 8 leads; body width 3.9 mm supplied in tube IES5502TR SO8 plastic small outline package; 8 leads; body width 3.9 mm supplied in tape and reel IES5502D MSOP-8L micro small outline package; 8 leads; body width 3.0 mm supplied in tube IES5502DR MSOP-8L micro small outline package ...

Page 10

... Exposure to limiting values for extended periods may affect device reliability. Application information Where application information is given advisory and does not form part of the specification. 14 COMPANY INFORMATION HENDON SEMICONDUCTORS PTY. LTD. ABN 17 080 879 616 Postal address: Hendon Semiconductors PO Box 2226 ...

Page 11

... DISCLAIMER Hendon Semiconductors Pty. Ltd. ABN 17 080 879 616 (“Hendon”) reserves the right to make changes to both its products and product data without notice. Hendon makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does Hendon assume any liability arising out of the use or application of any Hendon product. Hendon specifically disclaims any and all liability, including without limitation incidental or consequential damages ...

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