74vcx245 Fairchild Semiconductor, 74vcx245 Datasheet

74vcx245

Manufacturer Part Number

74vcx245

Description

74vcx245 Low Voltage Bidirectional Transceiver With 3.6v Tolerant Inputs And Outputs

Manufacturer

Fairchild Semiconductor

Datasheet

1.74VCX245.pdf (11 pages)

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74VCX245WM

(Note 2)

74VCX245BQX

(Note 3)

74VCX245MTC

(Note 2)

74VCX245

Low Voltage Bidirectional Transceiver

with 3.6V Tolerant Inputs and Outputs

General Description

The VCX245 contains eight non-inverting bidirectional buff-

ers with 3-STATE outputs and is intended for bus oriented

applications. The T/R input determines the direction of data

flow. The OE input disables both the A and B ports by plac-

ing them in a high impedance state.

The 74VCX245 is designed for low voltage (1.4V to 3.6V)

The 74VCX245 is fabricated with an advanced CMOS

technology to achieve high-speed operation while main-

taining low CMOS power dissipation.

Ordering Code:

Pb-Free package per JEDEC J-STD-020B.

Note 2: Devices also available in Tape and Reel. Specify by appending the suffix letter “X” to the ordering code.

Note 3: DQFN package available in Tape and Reel only,

Logic Symbol

Order Number

applications with I/O compatibility up to 3.6V.

MLP020B

Package

Number

MTC20

M20B

20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300" Wide

Pb-Free 20-Terminal Depopulated Quad Very-Thin Flat Pack No Leads (DQFN), JEDEC

MO-241, 2.5 x 4.5mm

20-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide

DS500167

Features

Note 1: To ensure the high impedance state during power up and power

down, OE

value of the resistor is determined by the current sourcing capability of the

driver.

Pin Descriptions

T/R

1.4V to 3.6V V

3.6V tolerant inputs and outputs

Power-off high impedance inputs and outputs

Supports Live Insertion and Withdrawal (Note 1)

3.5 ns max for 3.0V to 3.6V V

Static Drive (I

Uses patented noise/EMI reduction

circuitry

Latchup performance exceeds 300 mA

ESD performance:

Human body model

Machine model

Leadless DQFN Pb-Free package

Pin Names

–A

–B

Package Description

24 mA @ 3.0V V

should be tied to V

Output Enable Input (Active LOW)

Transmit/Receive Input

Side A Inputs or 3-STATE Outputs

Side B Inputs or 3-STATE Outputs

supply operation

200V

)

2000V

through a pull up resistor. The minimum

June 1999

Revised April 2005

Description

www.fairchildsemi.com

Related parts for 74vcx245

74vcx245 Summary of contents

Page 1

... The T/R input determines the direction of data flow. The OE input disables both the A and B ports by plac- ing them in a high impedance state. The 74VCX245 is designed for low voltage (1.4V to 3.6V) V applications with I/O compatibility up to 3.6V. CC ...

Page 2

Connection Diagrams Pin Assignments for SOIC and TSSOP Pin Assignment for DQFN (Top Through View) www.fairchildsemi.com Truth Table Inputs Outputs OE T Bus B –B Data to Bus Bus A –A Data to ...

Page 3

Absolute Maximum Ratings Supply Voltage ( Input Voltage ( Output Voltage ( Outputs 3-STATE Outputs Active (Note 6) 0. Input Diode Current ( ...

Page 4

DC Electrical Characteristics Symbol Parameter V LOW Level Output Voltage OL I Input Leakage Current I I 3-STATE Output Leakage Power-OFF Leakage Current OFF I Quiescent Supply Current Increase in I per Input CC ...

Page 5

Dynamic Switching Characteristics Symbol Parameter V Quiet Output Dynamic Peak V OLP OL V Quiet Output Dynamic Valley V OLV OL V Quiet Output Dynamic Valley V OHV OH Capacitance Symbol Parameter C Input Capacitance IN C Input/Output Capacitance I/O ...

Page 6

AC Loading and Waveforms (V TEST PLH PHL PZL PLZ PZH PHZ FIGURE 2. Waveform for Inverting and Non-Inverting Functions FIGURE 3. 3-STATE Output High Enable and Disable Times for Low ...

Page 7

AC Loading and Waveforms (V TEST PLH PHL PZL PLZ PZH PHZ FIGURE 6. Waveform for Inverting and Non-Inverting Functions FIGURE 7. 3-STATE Output High Enable and Disable Times for Low ...

Page 8

Tape and Reel Specification Tape Format for DQFN Package Tape Designator Section Leader (Start End) BQX Carrier Trailer (Hub End) TAPE DIMENSIONS inches (millimeters) REEL DIMENSIONS inches (millimeters) Tape Size A B 13.0 0.059 12 mm (330.0) (1.50) www.fairchildsemi.com Number ...

Page 9

Physical Dimensions inches (millimeters) unless otherwise noted 20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300" Wide Package Number M20B 9 www.fairchildsemi.com ...

Page 10

Physical Dimensions inches (millimeters) unless otherwise noted (Continued) Pb-Free 20-Terminal Depopulated Quad Very-Thin Flat Pack No Leads (DQFN), JEDEC MO-241, 2.5 x 4.5mm www.fairchildsemi.com Package Number MLP020B 10 ...

Page 11

Physical Dimensions inches (millimeters) unless otherwise noted (Continued) 20-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide Fairchild does not assume any responsibility for use of any circuitry described, no circuit patent licenses are implied and Fairchild reserves ...

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