74LCXH162244 ,Low Voltage 16-Bit Buffer/Line Driver with Bushold and 26-Ohm Series Resistors in OutputsAbsolute Maximum Ratings are those values beyond which damage to the device may occur. Functional o ..
74LCXH162244MEX ,Low Voltage 16-Bit Buffer/Line Driver with Bushold and 26 Ohm Series Resistors in Outputsapplications with capability of interfacing to a 5VCC
74LCXH162244
Low Voltage 16-Bit Buffer/Line Driver with Bushold and 26-Ohm Series Resistors in Outputs
1/10February 2003 5V TOLERANT INPUTS AND OUTPUTS HIGH SPEED:
tPD= 4.4ns (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 26Ω SERIE RESISTORSIN OUTPUTS BUS HOLD PROVIDED ON DATA INPUT OPERATING VOLTAGE RANGE:
VCC(OPR)= 2.0Vto 3.6V (1.5V Data
Retention) PIN AND FUNCTION COMPATIBLE WITH SERIES H162244 LATCH-UP PERFORMANCE EXCEEDS
500mA (JESD 17) ESD PERFORMANCE:
HBM> 2000V (MIL STD 883 method 3015);> 200V
DESCRIPTIONThe 74LCX162244isa low voltage CMOS16 BIT
BUS BUFFER (NON-INVERTED) 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 can be
interfacedto5V signal environmentfor both inputs
and outputs.
Any nG output control governs four BUS BUFF-
ERS. Output Enable input (nG) tied together gives
full 16-bit operation.
When nGis LOW, the outputs are on. When nGis
HIGH, the output arein high impedance state.
Active bus-hold circuitryis providedto hold un-
usedor floating data inputsata valid logic level.
This deviceis designedto be used with3 state
memory address drivers, etc.
The device circuitsis including 26Ω series resis-
tancein the outputs. These resistors permitto re-
duce line noisein high speed applications.
All inputs and outputs are equipped with protec-
tion circuits against static discharge, giving them
2KV ESD immunity and transient excess voltage.
74LCXH162244LOW VOLTAGE CMOS 16-BIT BUS BUFFER (3-STATE)
WITH 5V TOLERANT INPUTS AND OUTPUTS
ORDER CODES
PIN CONNECTION
74LCXH1622442/10
INPUT AND OUTPUT EQUIVALENT CIRCUIT
PIN DESCRIPTION
TRUTH TABLE: Don‘t Care: High Impedance
IEC LOGIC SYMBOLS
74LCXH1622443/10
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
74LCXH162244
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.
74LCXH162244
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)
74LCXH162244
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)
