74AC16541 ,16-BIT BUS BUFFER WITH 3-STATE OUTPUTS (NON INVERTED)74AC1654116-BIT BUS BUFFERWITH 3-STATE OUTPUTS (NON INVERTED)■ HIGH SPEED:t = 4.5 ns (TYP.) at V =5 ..
74AC169 ,4-Stage Synchronous Bidirectional Counterfeatures a
74AC16541
16-BIT BUS BUFFER WITH 3-STATE OUTPUTS (NON INVERTED)
1/9February 2003 HIGH SPEED:
tPD=4.5ns (TYP.)at VCC =5V LOW POWER DISSIPATION:CC=8μA (MAX.)atTA =25°C HIGH NOISE IMMUNITY:NIH=VNIL= 28%VCC (MIN.) POWER DOWN PROTECTIONON INPUTS SYMMETRICAL OUTPUT IMPEDANCE:OH|=IOL =24mA (MIN) BALANCED PROPAGATION DELAYS:PLH≅tPHL OPERATING VOLTAGE RANGE:
VCC(OPR)=2Vto6V PIN AND FUNCTION COMPATIBLE WITH SERIES 16541 IMPROVED LATCH-UP IMMUNITY
DESCRIPTIONThe 74AC16541is an advanced high-speed
CMOS 16-BIT BUS BUFFER (3-STATE) fabricat- with sub-micron silicon gate and double-layer
metal wiringC2 MOS tecnology.
Thisis composedof two 8-bit sections with
separate output-enable signals. For either 8-bit
buffers section, the3 STATE control gate
operatesasa two input AND such thatif either
nG1 and nG2are high,all outputsareinthe high
impedence state.
74AC1654116-BIT BUS BUFFER
WITH 3-STATE OUTPUTS (NON INVERTED)
ORDER CODES
PIN CONNECTION
74AC165412/9
INPUT AND OUTPUT EQUIVALENT CIRCUIT
PIN DESCRIPTION
TRUTH TABLE: Don’tCare:High Impedance
IEC LOGIC SYMBOLS
74AC165413/9
ABSOLUTE MAXIMUM RATINGSAbsoluteMaximum Ratingsare those values beyond which damagetothe device mayoccur.Functional operation under these conditionsis
not implied
RECOMMENDED OPERATING CONDITIONSVINfrom30%to70%ofVCC
74AC165414/9
SPECIFICATIONS ELECTRICAL CHARACTERISTICS(CL =50pF,RL= 500Ω, Inputtr=tf= 3ns)
(*) Voltage rangeis3.3V±0.3V
(**) Voltage rangeis5.0V±0.5V
74AC165415/9
CAPACITIVE CHARACTERISTICSCPD isdefinedasthe valueoftheIC’s internal equivalent capacitance whichis calculatedfrom theoperating current consumption without
load. (RefertoTest Circuit). Average operating currentcanbe obtainedbythe following equation. ICC(opr) =CPD xVCCxfIN +ICC/16
TEST CIRCUIT=50pFor equivalent (includesjigand probe capacitance)=R1=500Ω or equivalent =ZOUTof pulse generator (typically50Ω)
74AC165416/9
WAVEFORM1: PROPAGATION DELAYS (f=1MHz; 50% duty cycle)
WAVEFORM2: OUTPUT ENABLE AND DISABLE TIME (f=1MHz; 50% duty cycle)
