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CMOS Low Supply Current Oscillator Frequency : 4MHz to 70MHz Built-In Oscillator Capacitors 3 State Output : fo/1, fo/2, fo/4, fo/8 Supply Voltage : 5.0V Mini Mold SOT-26 Package
Applications
Crystal Oscillator Modules Communication Equipment Microcomputers Clock Units in Motor Control System Clocks on Boards Timers Palmtops
General Description
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.
Features
High Precision : Built-in oscillator capacitors 16pF TYP (or selectable from 10 to 20pF) On-chip amplifier feedback resistor 5M TYP (or selectable from 1.6k to 8.4k) Oscillator Frequency : 4MHz to 70MHz Divider Ratio : Selectable from f0/1, f0/2, f0/4, f0/8 Output : 3 state, 10 - TTL fanout Operating Voltage Range : 4.0V to 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 Configuration
Pin Assignment
INH/
1
6
XT/
XT
2
5
VDD
VSS
3
4
Q0
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)
SOT-26 (TOP VIEW)
* Control pin has pull-up resistor built-in.
INH, Q 0 Pin Function
XC2151x51 INH/ H open L Q0 Output Output High Impedance (oscillator stopped)
!0
XC2151x55 INH/ H open L H = High Level L = Low Level
Q0 Output Output High Impedance (oscillator operating)
Absolute Maximum Ratings
PARAMETER Supply Voltage Input Voltage Power Dissipation Operating Ambient Temp. Storage Temp. SYMBOL VDD VIN Pd Topr Tstg CONDITIONS VSS - 0.3 to VSS + 7.0 VSS - 0.3 to VDD + 0.3 150 -30 to +75 -55 to +125 UNITS V V mW O C O C
Block Diagram
XC2151A Series
VDD Cg RUP Rf Cd
QO
XT XT INH
1/2
1/2
1/2 VSS
XC2151T / C Series
VDD Cg RUP Rf Cd
QO
XT VSS XT
!0
INH
Electrical Characteristics
XC2151T51A / 55A (overtone) V DD =5.0V, Fosc=20MHz, No Load, Ta = 25 OC 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 Resistance Internal Oscillator Capacitance Internal Oscillator Feedback Resistance Output Disable Leakage Current SYMBOL V DD V IH V IL IOH IOL IDD1 IDD2 IDD2 RUP Cg,Cd Rf IOZ CONDITIONS MIN 4.0 2.4 VOH = 4.6V VOL = 0.4V / INH = OPEN, Q0 = OPEN / INH = "L" / INH = "L" / INH = 4.5V see note below / INH = "L" - 10 16 18 2 16 50 18 5.0 20 5.5 25 5 23 200 22 6.1 10 TYP MAX 6.0 0.4 UNITS V V V mA mA mA A mA k pF k A
note : the values for Cg,Cd are the designed values.
XC2151T51D / 55D (overtone) V DD =5.0V, Fosc=70MHz, No Load, Ta = 25 OC PARAMETER Operating Supply Voltage Input Voltage 'High' Input Voltage 'Low' Output Current 'High' Output Current 'Low' Supply Current 1 Supply Current 2 (51D) Supply Current 2 (55D) Input Pull-Up Resistance Internal Oscillator Capacitance Internal Oscillator Feedback Resistance Output Disable Leakage Current SYMBOL V DD V IH V IL IOH IOL IDD1 IDD2 IDD2 RUP Cg,Cd Rf IOZ CONDITIONS MIN 4.0 2.4 V OH = 4.6V V OL = 0.4V / INH = OPEN, Q 0 = OPEN / INH = "L" / INH = "L" / INH = 4.5V see note below / INH = "L" - 10 16 25 2 23 50 9 2.7 10 3.0 35 5 32 200 11 3.3 10 TYP MAX 6.0 0.4 UNITS V V V mA mA mA A mA k pF k A
!0
note : the values for Cg,Cd are the designed values.
XC2151T (overtone) PART No. XC2151T51A XC2151T51B XC2151T51C XC2151T51D DUTY LEVEL TTL TTL TTL TTL OUTPUT 10TTL 10TTL 10TTL 10TTL DIVIDER RATIO f0 / 1 f0 / 1 f0 / 1 f0 / 1 Rf (k ) 5.5 4.0 3.0 3.0 Cg/Cd (pF) 20 20 13 10 RECOMMENDED FREQUENCY RANGE 20MHz 30MHz 43MHz 55MHz to 33MHz to 45MHz to 57MHz to 70MHz
Electrical Characteristics
XC2151C51F / 55F (overtone) V DD =5.0V, Fosc=20MHz, No Load, Ta = 25 OC PARAMETER Operating Supply Voltage Input Voltage 'High' Input Voltage 'Low' Output Current 'High' Output Current 'Low' Supply Current 1 Supply Current 2 (51F) Supply Current 2 (55F) Input Pull-Up Resistance Internal Oscillator Capacitance Internal Oscillator Feedback Resistance Output Disable Leakage Current SYMBOL V DD V IH V IL IOH IOL IDD1 IDD2 IDD2 RUP Cg,Cd Rf IOZ CONDITIONS MIN 4.0 2.4 V OH = 4.6V V OL = 0.4V / INH = OPEN, Q0 = OPEN / INH = "L" / INH = "L" / INH = 4.5V see note below / INH = "L" - 10 16 18 2 16 50 18 5.0 20 5.5 25 5 23 200 22 6.1 10 TYP MAX 6.0 0.4 UNITS V V V mA mA mA A mA k pF k A
note : the values for Cg,Cd are the designed values.
XC2151C51L / 55L (overtone) V DD =5.0V, Fosc=70MHz, No Load, Ta = 25 OC PARAMETER Operating Supply Voltage Input Voltage 'High' Input Voltage 'Low' Output Current 'High' Output Current 'Low' Supply Current 1 Supply Current 2 (51L) Supply Current 2 (55L) Input Pull-Up Resistance Internal Oscillator Capacitance Internal Oscillator Feedback Resistance Output Disable Leakage Current SYMBOL V DD V IH V IL IOH IOL IDD1 IDD2 IDD2 RUP Cg,Cd Rf IOZ CONDITIONS MIN 4.0 2.4 V OH = 4.6V V OL = 0.4V / INH = OPEN, Q0 = OPEN / INH = "L" / INH = "L" / INH = 4.5V see note below / INH = "L" - 10 16 25 2 23 50 9 2.7 10 3.0 35 5 32 200 11 3.3 10 TYP MAX 6.0 0.4 UNITS V V V mA mA mA A mA k pF k A
!0
note : the values for Cg,Cd are the designed values.
XC2151C (overtone) PART No. XC2151C51F XC2151C51H XC2151C51K XC2151C51L DUTY LEVEL CMOS (V DD /2) CMOS (VDD /2) CMOS (VDD /2) CMOS (VDD /2) OUTPUT 10TTL 10TTL 10TTL 10TTL DIVIDER RATIO f0 / 1 f0 / 1 f0 / 1 f0 / 1 Rf (k ) 5.5 4.0 3.0 3.0 Cg/Cd (pF) 20 20 13 10 RECOMMENDED 20MHz to 33MHz 30MHz to 45MHz 43MHz to 57MHz 55MHz to 70MHz
Electrical Characteristics
XC2151A510 / 519 ( fundamental ) V DD =5.0V, Fosc=20MHz, No Load, Ta = 25 OC PARAMETER Operating Supply Voltage Input Voltage 'High' Input Voltage 'Low' Output Current 'High' Output Current 'Low' Supply Current 1 Supply Current 2 Input Pull-Up Resistance Internal Oscillator Capacitance Internal Oscillator Feedback Resistance Output Disable Leakage Current SYMBOL V DD V IH V IL IOH IOL IDD1 IDD2 RUP Cg,Cd Rf IOZ CONDITIONS MIN 4.0 2.4 V OH = 4.6V V OL = 0.4V / INH = OPEN, Q0 = OPEN / INH = "L" / INH = 4.5V see note below - 10 16 2 50 16 5 10 12 5 200 TYP MAX 6.0 0.4 UNITS V V V mA mA mA A k pF A
note : the values for Cg,Cd are the designed values with XC2151A510. The XC2151A519 is an external type.
XC2151A580 / 589 ( fundamental, f0 / 8 ) V DD =5.0V, Fosc=20MHz, No Load, Ta = 25OC PARAMETER Operating Supply Voltage Input Voltage 'High' Input Voltage 'Low' Output Current 'High' Output Current 'Low' Supply Current 1 Supply Current 2 Input Pull-Up Resistance Internal Oscillator Capacitance Internal Oscillator Feedback Resistance Output Disable Leakage Current SYMBOL V DD V IH V IL IOH IOL IDD1 IDD2 RUP Cg,Cd Rf IOZ CONDITIONS MIN 4.0 2.4 V OH = 4.6V V OL = 0.4V / INH = OPEN, Q0 = OPEN / INH = "L" / INH = 4.5V see note below - 10 16 2 50 16 5 10 12 5 200 TYP MAX 6.0 0.4 UNITS V V V mA mA mA A k pF A
note : the values for Cg,Cd are the designed values with XC2151A580. The XC2151A589 is an external type.
!0
XC2151A ( fundamental ) PART No. XC2151A510 XC2151A520 XC2151A540 XC2151A580 XC2151A519 XC2151A529 XC2151A549 XC2151A589 DUTY LEVEL CMOS (VDD /2), TTL CMOS (VDD /2), TTL CMOS (VDD /2), TTL CMOS (VDD /2), TTL CMOS (VDD /2), TTL CMOS (VDD /2), TTL CMOS (VDD /2), TTL CMOS (VDD /2), TTL OUTPUT 10TTL 10TTL 10TTL 10TTL 10TTL 10TTL 10TTL 10TTL DIVIDER RATIO f0 / 1 f0 / 2 f0 / 4 f0 / 8 f0 / 1 f0 / 2 f0 / 4 f0 / 8 Rf (M ) 5.0 5.0 5.0 5.0 5.0 5.0 5.0 5.0 Cg/Cd (pF) 16 16 16 16 16 (ext.) 16 (ext.) 16 (ext.) 16 (ext.) RECOMMENDED FREQUENCY RANGE 4MHz 4MHz 4MHz 4MHz 4MHz 4MHz 4MHz 4MHz to 30MHz to 30MHz to 30MHz to 30MHz to 30MHz to 30MHz to 30MHz to 30MHz
Switching Characteristics
XC2151T (overtone, fundamental) TTL Duty, VDD=5.0V, Ta = 25 OC PARAMETER Output Rise Time Output Fall Time Duty Cycle SYMBOL TTLH TTHL DUTY CONDITIONS Load=10TTL, 0.4V 2.4V Load=10TTL, 2.4V 0.4V Load=10TTL @ 1.4V MIN TYP MAX 5 5 55 UNITS nsec nsec %
45
Switching Waveforms Switching Time
TTL Output
Q0 Output 2.4V
DUTY measure level
2.4V
1.4V
TW
0.4V 0.4V
TTLH
TTHL
Duty Cycle
!0
DUTY measure level 1.4V
TW T
DUTY=(TW/T) x 100%
Switching Characteristics
XC2151C (overtone, fundamental) TTL Duty, VDD =5.0V, Ta = 25 OC PARAMETER Output Rise Time Output Fall Time Duty Cycle SYMBOL TTLH TTHL DUTY CONDITIONS CL=15pF, 0.1VDD 0.9VDD CL=15pF, 0.9VDD 0.1VDD CL=15pF @ VDD / 2 MIN TYP MAX 5 5 55 UNITS nsec nsec %
45
Switching Waveforms Switching Time
CMOS Output
Q0 Output 0.9V DD
DUTY measure level
0.9VDD
0.5VDD
TW
0.1VDD 0.1VDD
TTLH
TTHL
Duty Cycle
DUTY measure level 0.5 V DD
!0
TW T
DUTY=(TW/T) x 100%
Ordering Information XC 2 1 5 1 x x x x x x
abcdefg h DESIGNATOR 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 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
a b
e f g
c
d
h
Device Orientation : R = Embossed Tape (orientation of device : right) L= Embossed Tape (orientation of device : left)
Marking
6 5 4
1
2
3
SOT-26 (TOP VIEW)
!0
Represents the Divider Ratio MARK A B RATIO f0/1 f0/2 MARK C D RATIO f0/4 f0/8
Represents Stand-by Mode, Duty Level & Output Capability 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
Represents Fundamental / Overtone and Rf, Cg, Cd
Represents the Assembly Lot No. (based on internal standards)

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