August 1998 Revised September 1998 74LCXR162245 Low-Voltage 16-Bi
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74LCXR162245 Low-Voltage 16-Bit Bidirectional Transceiver with Tolerant Inputs/Outputs Series Resistors Outputs
August 1998 Revised September 1998
74LCXR162245 Low-Voltage 16-Bit Bidirectional Transceiver with Tolerant Inputs/Outputs Series Resistors Outputs
LCXR162245 contains sixteen non-inverting bidirectional buffers with 3-STATE outputs intended oriented applications. device designed voltage (3.3V) applications with capability interfacing signal environment. device byte controlled. Each byte separate control inputs which could shorted together full 16-bit operation. inputs determine direction data flow through device. inputs disable both ports placing them high impedance state. addition, outputs include equivalent (nominal) series resistors reduce overshoot undershoot designed sink/source LCXR162245 fabricated with advanced CMOS technology achieve high speed operation while maintaining CMOS power dissipation.
Features
max, ICCQ tolerant inputs outputs Power down high impedance inputs outputs Supports live insertion/withdrawal 2.0V-3.6V supply operation Flow through pinout Outputs have equivalent series resistors, eliminating need external pullup pulldown resistors Implements patented noise/EMI reduction circuitry Functionally compatible with series 16245 Latch-up performance exceeds performance: Human body model 2000V Machine model 200V
Ordering Code:
Order Number 74LCXR162245MEA 74LCXR162245MEX(Note 74LCXR162245MTD 74LCXR162245MTX(Note
Note Tape Reel devices.
Package Number MS48A MS48A MTD48 MTD48
Package Description 48-Lead Small Shrink Outline Package, JEDEC MO-118, 0.300" Wide 48-Lead Small Shrink Outline Package, JEDEC MO-118, 0.300" Wide 48-Lead Thin Shrink Small Outline Package, JEDEC MO-153, 6.1mm Wide 48-Lead Thin Shrink Small Outline Package, JEDEC MO-153, 6.1mm Wide
Logic Symbol
Descriptions
Names A0-A15 B0-B15 Description Output Enable Input Transmit/Receive Input Side Inputs 3-STATE Outputs Side Inputs 3-STATE Outputs
1998 Fairchild Semiconductor Corporation
DS500052.prf
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74LCXR162245
Connection Diagram
Truth Tables
Inputs Inputs T/R2 B8-B15 Data A8-A15 A8-A15 Data B8-B15 HIGH State A8-A15, B8-B15(Note T/R1 B0-B7 Data A0-A7 A0-A7 Data B0-B7 HIGH State A0-A7, B0-B7(Note Outputs Outputs
Note port inputs still active
Logic Diagram
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74LCXR162245
Absolute Maximum Ratings(Note 3)(Note
Symbol IGND TSTG Parameter Supply Voltage Input Voltage Output Voltage Input Diode Current Output Diode Current Output Source/Sink Current Supply Current Supply Ground Current Ground Storage Temperature Value -0.5 +7.0 -0.5 +7.0 -0.5 +7.0 ±100 ±100 +150 (Note Operating Data Retention IOH/IOL Input Voltage Output Voltage Output Current Free-Air Operating Temperature Input Edge Rate, 0.8V-2.0V, 3.0V HIGH State 3-STATE 3.0V 3.6V 2.7V ns/V Units Output 3-STATE -0.5 Output HIGH State (Note Conditions Units
Recommended Operating Conditions
Symbol Supply Voltage Parameter
Note Absolute Maximum Ratings those values beyond which safety device cannot guaranteed. device should operated these limits. parametric values defined Electrical Characteristics tables guaranteed Absolute Maximum Ratings. "Recommended Operating Conditions" table will define conditions actual device operation. Note Absolute Maximum Rating must observed. Note Unused pins (Inputs I/O's) must held HIGH LOW. They Float.
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74LCXR162245
Electrical Characteristics
Symbol Parameter Conditions 2.7-3.6 2.7-3.6 -100 Level Output Voltage IOFF Input Leakage Current 3-STATE Leakage Power-Off Leakage Current Quiescent Supply Current Increase Input 5.5V 5.5V 5.5V 3.6V 5.5V -0.6V 2.7-3.6 2.7-3.6 2.7-3.6 2.7-3.6 2.7-3.6 2.7-3.6 2.7-3.6 0.55 ±5.0 ±5.0 -40°C +85°C HIGH Level Input Voltage Level Input Voltage HIGH Level Output Voltage Units
Electrical Characteristics
Symbol Parameter -40°C +85°C, 50pF, 3.3V ±0.3V tPHL tPLH tPZL tPZH tPLZ tPHZ tOSHL tOSLH Output Output Skew (Note Output Disable Time Propagation Delay Output Enable Time 2.7V Units
Note Skew defined absolute value difference between actual propagation delay separate outputs same device. specification applies outputs switching same direction, either HIGH (tOSHL) HIGH (tOSLH). Parameter guaranteed design.
Dynamic Switching Characteristics
Symbol Parameter Conditions 3.3V, 3.3V, 25°C Typical -0.8 Units
VOLP VOLV
Quiet Output Dynamic Peak Quiet Output Dynamic Valley
Capacitance
Symbol CI/O Parameter Input Capacitance Input/Output Capacitance Power Dissipation Capacitance Conditions Open, 3.3V, 3.3V, VCC, Typical Units
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74LCXR162245
Physical Dimensions inches (millimeters) unless otherwise noted
48-Lead Small Shrink Outline Package, JEDEC MO-118, 0.300" Wide Package Number MS48A
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74LCXR162245 Low-Voltage 16-Bit Bidirectional Transceiver with Tolerant Inputs/Outputs Series Resistors Outputs
Physical Dimensions inches (millimeters) unless otherwise noted (Continued)
48-Lead Thin Shrink Small Outline Package, JEDEC MO-153, 6.1mm Wide Package Number MTD48
LIFE SUPPORT POLICY FAIRCHILD'S PRODUCTS AUTHORIZED CRITICAL COMPONENTS LIFE SUPPORT DEVICES SYSTEMS WITHOUT EXPRESS WRITTEN APPROVAL PRESIDENT FAIRCHILD SEMICONDUCTOR CORPORATION. used herein: Life support devices systems devices systems which, intended surgical implant into body, support sustain life, whose failure perform when properly used accordance with instructions provided labeling, reasonably expected result significant injury user. critical component component life support device system whose failure perform reasonably expected cause failure life support device system, affect safety effectiveness. www.fairchildsemi.com
Fairchild does assume responsibility circuitry described, circuit patent licenses implied Fairchild reserves right time without notice change said circuitry specifications.
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