August 1998 Revised April 1999 74LCXP16245 Voltage 16-Bit Bidirec

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August 1998 Revised April 1999 74LCXP16245 Voltage 16-Bit Bidirec

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74LCXP16245 Voltage 16-Bit Bidirectional Transceiver with Tolerant Inputs/Outputs Pull-Down Resistors
August 1998 Revised April 1999
74LCXP16245 Voltage 16-Bit Bidirectional Transceiver with Tolerant Inputs/Outputs Pull-Down Resistors
LCXP16245 contains sixteen non-inverting bidirectional buffers with 3-STATE outputs intended oriented applications. device designed voltage (2.5V 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, port datapath pins have built-in resistors allowing pins float without increase current. This feature intended address modular space constrained applications where additional space consumed external resistors available. LCXP16245 fabricated with advanced CMOS technology achieve high speed operation while maintaining CMOS power dissipation.
Features
tolerant inputs outputs 2.3V-3.6V specifications provided Pull-down resistors terminate inactive busses ensuring stable state (VCC 3.3V), Power down high impedance inputs outputs Supports live insertion/withdrawal (Note output drive (VCC 3.0V) Implements patented noise/EMI reduction circuitry Pinout compatible with series 16245 Latch-up performance exceeds performance: Human body model 2000V Machine model 200V
Note ensure high-impedance state during power down should tied through pull-up resistor: minimum value resistor determined current-sourcing capability driver.
Ordering Code:
Order Number 74LCXP16245MEA 74LCXP16245MTD Package Number MS48A MTD48 Package Description 48-Lead Small Shrink Outline Package (SSOP), JEDEC MO-118, 0.300" Wide 48-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 6.1mm Wide
Devices also available Tape Reel. Specify appending suffix letter ordering code.
Logic Symbol
Descriptions
Names T/Rn A0-A15 B0-B15 Output Enable Input Transmit/Receive Input Side Inputs 3-STATE Outputs Side Inputs 3-STATE Outputs Description
1999 Fairchild Semiconductor Corporation
DS500053.prf
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74LCXP16245
Connection Diagram
Truth Tables
Inputs T/R1 B0-B7 Data A0-A7 A0-A7 Data B0-B7 HIGH State A0-A7, B0-B7 (Note Outputs Outputs
Inputs T/R2
B8-B15 Data A8-A15 A8-A15 Data B8-B15 HIGH State A8-A15, B8-B15 (Note
HIGH Voltage Level Voltage Level Immaterial High Impedance Note port inputs still active.
Functional Descriptions
LCXP16245 contains sixteen non-inverting bidirectional buffers with 3-STATE outputs. device byte controlled. Each byte separate control inputs which shorted together full 16-bit operation. inputs determine direction data flow through device. inputs disable both ports placing them high impedance state. pulldown resistor (30K normal) active only when outputs 3-STATED HIGH). When outputs become active LOW) resistor removed from circuit.
Logic Diagram
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74LCXP16245
Absolute Maximum Ratings(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 -0.5 ±100 ±100 +150 Output 3-STATE Output HIGH State (Note Conditions Units
Recommended Operating Conditions
Symbol IOH/IOL Supply Voltage Input Voltage Output Voltage Output Current HIGH State 3-STATE 3.0V 3.6V 2.7V 3.0V 2.3V 2.7V Free-Air Operating Temperature Input Edge Rate, 0.8V-2.0V, 3.0V Parameter Operating Data Retention ns/V Units
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.
Electrical Characteristics
Symbol Parameter HIGH Level Input Voltage Level Input Voltage HIGH Level Output Voltage -100 Level Output Voltage IOZ(L) IOZ(H) IOFF Input Leakage Current 3-STATE Leakage 3-STATE Leakage Power-Off Leakage Current 5.5V 0.0V 5.5V 5.5V Conditions 0.55 ±5.0 ±5.0 -40°C +85°C Units
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74LCXP16245
Electrical Characteristics
Symbol Parameter Quiescent Supply Current Increase Input
(Continued)
-40°C +85°C
Conditions 3.6V 5.5V (Note -0.6V
Units
Note Outputs disabled 3-STATE only.
Electrical Characteristics
-40°C +85°C, Symbol Parameter 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 2.5V 0.2V Units
Note Skew defined absolute value difference between actual propagation delay separate outputs same device. specification applies outputs switching same direction, either HIGH-to-LOW (tOSHL) LOW-to-HIGH (tOSLH). Parameter guaranteed design.
Dynamic Switching Characteristics
Symbol VOLP VOLV Parameter Quiet Output Dynamic Peak Quiet Output Dynamic Valley Conditions 3.3V, 2.5V, 3.3V, 2.5V, 25°C Typical -0.8 -0.6 Units
Capacitance
Symbol CI/O Input Capacitance Input/Output Capacitance Power Dissipation Capacitance Parameter Conditions Open, 3.3V, 3.3V, VCC, Typical Units
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74LCXP16245
LOADING WAVEFORMS Generic Family
FIGURE Test Circuit includes probe capacitance) Test tPLH, tPHL tPZL, tPLZ tPZH,tPHZ Switch Open 0.3V 0.2V
Waveform Inverting Non-Inverting Functions
3-STATE Output High Enable Disable Times Logic
Propagation Delay. Pulse Width trec Waveforms
Setup Time, Hold Time Recovery Time Logic
3-STATE Output Enable Disable Times Logic FIGURE Waveforms (Input Characteristics; =1MHz, 3ns) Symbol 3.3V 0.3V 1.5V 1.5V 0.3V 0.3V 2.7V 1.5V 1.5V 0.3V 0.3V
trise tfall
2.5V 0.2V VCC/2 VCC/2 0.15V 0.15V
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74LCXP16245
Schematic Diagram Generic Family
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74LCXP16245
Physical Dimensions inches (millimeters) unless otherwise noted
48-Lead Small Shrink Outline Package (SSOP), JEDEC MO-118, 0.300" Wide Package Number MS48A
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74LCXP16245 Voltage 16-Bit Bidirectional Transceiver with Tolerant Inputs/Outputs Pull-Down Resistors
Physical Dimensions inches (millimeters) unless otherwise noted (Continued)
48-Lead Thin Shrink Small Outline Package (TSSOP), 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: critical component component life support Life support devices systems devices systems device system whose failure perform reawhich, intended surgical implant into sonably expected cause failure life support body, support sustain life, whose failure device system, affect safety effectiveness. perform when properly used accordance with instructions provided labeling, reasonably expected result significant injury www.fairchildsemi.com user.
Fairchild does assume responsibility circuitry described, circuit patent licenses implied Fairchild reserves right time without notice change said circuitry specifications.

August 1998 Revised April 1999 74LCXP16245 Voltage 16-Bit Bidirec

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