M54HC161 ,SYNCHRONOUS PRESETTABLE 4-BIT COUNTERM54HC161RAD-HARD SYNCHRONOUSPRESETTABLE 4-BIT COUNTER
M54HC161
RAD-HARD SYNCHRONOUS PRESETTABLE 4-BIT COUNTER
1/12March 2004 HIGH SPEED:
fMAX =62MHz (TYP.)at VCC =6V LOW POWER DISSIPATION:CC =4μA(MAX.)atTA =25°C HIGH NOISE IMMUNITY:NIH =VNIL= 28%VCC (MIN.) SYMMETRICAL OUTPUT IMPEDANCE:
|IOH|= IOL =4mA (MIN) BALANCED PROPAGATION DELAYS:
tPLH≅ tPHL WIDE OPERATING VOLTAGE RANGE:CC (OPR)= 2Vto 6V PIN AND FUNCTION COMPATIBLE WITH SERIES 161 SPACE GRADE-1: ESA SCC QUALIFIED 50 krad QUALIFIED, 100 krad AVAILABLE ON
REQUEST NO SEL UNDER HIGH LET HEAVY IONS
IRRADIATION DEVICE FULLY COMPLIANT WITH
SCC-9204-059
DESCRIPTIONThe M54HC161 is an high speed CMOS
SYNCHRONOUS 4-BIT BINARY PRESETTABLE
COUNTER fabricated with silicon gateC2 MOS
technology.
The CLOCK inputis active on the rising edge.
Both LOAD and CLEAR inputs are active LOW.
Presettingis synchronous on the rising edgeof
the clock, the functionis cleared asynchronously.
Two enable inputs (TE and PE) and CARRY
output are providedto enable easy cascadingof
counters, which facilities easy implementationof
N-bit counters without using external gates.
All inputs are equipped with protection circuits
against static discharge and transient excess
voltage.
M54HC161RAD-HARD SYNCHRONOUS
PRESETTABLE 4-BIT COUNTER
PIN CONNECTION
ORDER CODES
M54HC1612/12
IEC LOGIC SYMBOLS
INPUT AND OUTPUT EQUIVALENT CIRCUIT PIN DESCRIPTION
TRUTH TABLE: Don’t CareB,C,D: Logic levelof data inputs
Carry: CARRY= TE·QA·QB·QC·QD
M54HC1613/12
LOGIC DIAGRAMThis logic diagramhasnotbe usedto estimate propagation delays
TIMING CHART
M54HC1614/12
ABSOLUTE MAXIMUM RATINGSAbsoluteMaximum Ratingsare those values beyond which damagetothe device mayoccur.Functional operation under these conditionsis
not implied
RECOMMENDED OPERATING CONDITIONS
M54HC1615/12
SPECIFICATIONS
M54HC161
6/12 ELECTRICAL CHARACTERISTICS(CL=50 pF, Inputtr=tf =6ns)
