74LCXHR162245 ,LOW VOLTAGE CMOS 16-BIT BUS TRANSCEIVER (3-STATE) WITH 5V TOLERANT INPUTS AND OUTPUTSAbsolute Maximum Ratings are those values beyond which damage to the device may occur. Functional o ..
74LCXP16245 ,Low Voltage 16-Bit Bidirectional Transceiver with 5V Tolerant Inputs/Outputs and Pull-Down ResistorsFunctional DescriptionsThe LCXP16245 contains sixteen non-inverting bidirec- The OE inputs disable ..
74LCXP16245 ,Low Voltage 16-Bit Bidirectional Transceiver with 5V Tolerant Inputs/Outputs and Pull-Down Resistorsapplications where additional space
74LCXHR162245
LOW VOLTAGE CMOS 16-BIT BUS TRANSCEIVER (3-STATE) WITH 5V TOLERANT INPUTS AND OUTPUTS
1/10July 2003 5V TOLERANT INPUTS AND OUTPUTS HIGH SPEED:
tPD= 4.7ns (MAX.)at VCC =3V POWER DOWN PROTECTION ON INPUTS
AND OUTPUTS SYMMETRICAL OUTPUT IMPEDANCE:
|IOH|= IOL= 12mA (MIN)at VCC =3V PCI BUS LEVELS GUARANTEED AT12 mA BALANCED PROPAGATION DELAYS:
tPLH≅ tPHL OPERATING VOLTAGE RANGE:
VCC(OPR)= 2.0Vto 3.6V (1.5V Data
Retention) BUS HOLDPROVIDEDONBOTH SIDES PIN AND FUNCTION COMPATIBLE WITH SERIES 16245 LATCH-UP PERFORMANCE EXCEEDS
500mA (JESD 17) ESD PERFORMANCE:
HBM> 2000V (MIL STD 883 method 3015);> 200V
DESCRIPTIONThe 74LCXHR162245isa low voltage CMOS16
BIT BUS TRANSCEIVER (3-STATE) fabricated
with sub-micron silicon gate and double-layer
metal wiringC2 MOS technology.Itis ideal for low
power and high speed 3.3V applications;it canbe
interfacedto5V signal environmentfor both inputs
and outputs.
This ICis intended for two-way asynchronous
communication between data buses; the direction data transmissionis determinedby DIR input.
The two enable inputs nG can beusedtodisable
the deviceso that the buses are effectively isolat-
ed.
Bus hold on data inputsis providedin orderto
eliminate the need for external pull-up or
pull-down resistor.
All outputs, which are designedto sink upto
12mA, include 26Ω resistorsto reduce overshoot
and undershoot.
All inputs and outputs are equipped with protec-
tion circuits against static discharge, giving them
2KV ESD immunity and transient excess voltage.
74LCXHR162245LOW VOLTAGE CMOS 16-BIT BUS TRANSCEIVER
WITH 5V TOLERANT INPUTS AND OUTPUT (3-STATE)
ORDER CODES
PIN CONNECTION
74LCXHR1622452/10
INPUT AND OUTPUT EQUIVALENT CIRCUIT
PIN DESCRIPTION
TRUTH TABLE: Don‘t Care: High Impedance
IEC LOGIC SYMBOLS
74LCXHR1622453/10
ABSOLUTE MAXIMUM RATINGSAbsoluteMaximum Ratingsare those values beyond which damagetothe device mayoccur.Functional operation under these conditionsis
not impliedIO absolute maximum rating mustbe observedVO
RECOMMENDED OPERATING CONDITIONS Truth Table guaranteed: 1.5Vto 3.6VVIN from 0.8Vto2Vat VCC =3.0V
74LCXHR162245
4/10 SPECIFICATIONS
DYNAMIC SWITCHING CHARACTERISTICS Numberof outputs definedas"n". Measured with "n-1" outputs switching from HIGHto LOWor LOWto HIGH. The remaining outputis
measuredinthe LOW state.
74LCXHR162245
5/10 ELECTRICAL CHARACTERISTICS Skewis defined astheabsolute value ofthedifference betweenthe actual propagation delayfor anytwo outputsofthe samedevice switch-
inginthe same direction, either HIGHor LOW (tOSLH =|tPLHm -tPLHn|, tOSHL =|tPHLm -tPHLn|) Parameter guaranteedby design
CAPACITIVE CHARACTERISTICS CPD isdefinedasthe valueofthe IC’s internal equivalent capacitance whichis calculatedfrom theoperating current consumption without
load. (Referto Test Circuit). Average operating currentcanbe obtainedbythe following equation. ICC(opr) =CPD xVCC xfIN +ICC/16 (per
circuit)
74LCXHR162245
6/10
TEST CIRCUIT=50pFor equivalent (includesjig and probe capacitance) =R1= 500Ω or equivalent =ZOUTof pulse generator (typically 50Ω)
WAVEFORM1: PROPAGATION DELAYS (f=1MHz; 50% duty cycle)
