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NCMOS
: Low Supply Current
GCrystal Oscillator Modules GCommunication Equipment GMicrocomputers GClock Units in Motor Control GSystem Clocks on Boards GTimers GPalmtops
NOscillator Frequency : 4MHz ~ 70MHz NBuilt-In Oscillator Capacitors NDivider Ratio N3-State Output NSupply Voltage : 5.0V NMini Mold SOT-26 Package : fo/1, fo/2, fo/4, fo/8
The XC2151 series are a group of high frequency, CMOS low power crystal oscillators with oscillator & divider circuitry, oscillator capacitors and amplifier feedback resistors built-in. An oscillator circuit can be created from just an external crystal. Output frequency can be selected from four frequencies : Fundamental f0/1, Divided f0/2, f0/4, f0/8. The output buffer is 3-State and has a fanout of 10 - TTL.
High Precision
: Built-in oscillator capacitors 16pF TYP (or selectable from 10 ~ 20pF) : On-chip amplifier feedback resistor 5MΩ TYP (or selectable from 1.6kΩ ~ 8.4kΩ) Oscillator Frequency : 4MHz ~ 70MHz Divider Ratio : Selectable from f0/1, f0/2, f0/4, f0/8 Output : 3-State, 10 - TTL fanout Operating Voltage Range : 4.0V ~ 6.0V Small Quiescent Current Stand-By Function Low Cost : Oscillator circuit can be created from just an external crystal Ultra Small Package : SOT-26 (150mW) mini mold
PIN NUMBER 1 2 3 4 5 6
PIN NAME /INH XT VSS Q0 V DD /XT
FUNCTION Control * Oscillator Connection (Input) GND Output Power Supply Oscillator Connection (Output)
* Control pin has pull-up resistor built-in.
XC2151x51
/INH "H" "L" open Q0 Output High Impedance (oscillator stopped) Output
14
XC2151x55
/INH "H" "L" open Q0 Output High Impedance (oscillator stopped) Output
"H" = High Level "L" = Low Level
1023
GOrdering Information
DESIGNATOR
a b
DESCRIPTION Supply Voltage : 5 = 5.0V Product Series : 1 = Large output capability, fundamental & overtone Duty Level : A = CMOS (V DD/2) & TTL C = CMOS (VDD/2) T = TTL Output Capability : 5 = 10TTL
DESIGNATOR
e f
DESCRIPTION Stand-by Mode and Divider Ratio : 1=f0/1 (CE), 2=f0/2 (CE), 4=f0/4 (CE), 8=f0/8 (CE), 5=f0/1 (OE) Fundamental / Overtone Rf, Cg, Cd : (please refer to electrical characteristics tables) Package : M = SOT-26
c
g
d
h
Device Orientation : R= Embossed Tape (Standerd Feed) L= Embossed Tape (Reverse Feed)
q MARK A B RATIO f0/1 f0/2 MARK C D RATIO f0/4 f0/8
q
w
e
r
w MARK 5 6 7 8 STAND-BY MODE CE CE CE OE DUTY LEVEL CMOS (VDD/2), TTL CMOS (VDD/2) TTL XC2151T=TTL , XC2151C=CMOS OUTPUT CAPABILITY 10TTL 10TTL 10TTL 10TTL
e
r
14
1024
PARAMETER Supply Voltage Input Voltage Power Dissipation Operating Ambient Temp. Storage Temp.
SYMBOL VDD VIN Pd Topr Tstg
CONDITIONS VSS - 0.3 ~ VSS + 7.0 VSS - 0.3 ~ VDD + 0.3 150 -30 ~ +75 -55 ~ +125
UNITS V V mW O C O C
14
1025
XC2151T51A / 55A (overtone)
VDD=5.0V, Fosc=20MHz, No Load, Ta = 25°C PARAMETER Operating Supply Voltage Input Voltage 'High' Input Voltage 'Low' Output Current 'High' Output Current 'Low' Supply Current 1 Supply Current 2 (51A) Supply Current 2 (55A) Input Pull-Up Resista.
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