XC2151T55 (Torex Semiconductor)
ICS FOR USE WITH CRYSTAL OSCILLATORS

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NCMOS
: Low Supply Current
NOscillator Frequency : 4MHz ~ 70MHz
NBuilt-In Oscillator Capacitors
NDivider Ratio
: fo/1, fo/2, fo/4, fo/8
N3-State Output
NSupply Voltage
: 5.0V
NMini Mold SOT-26 Package
GCrystal Oscillator Modules
GCommunication Equipment
GMicrocomputers
GClock Units in Motor Control
GSystem Clocks on Boards
GTimers
GPalmtops
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
5MTYP (or selectable from 1.6k~
8.4k)
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 PIN NAME
1 /INH
2 XT
3 VSS
4 Q0
5 V DD
6 /XT
* Control pin has pull-up resistor built-in.
FUNCTION
Control *
Oscillator Connection (Input)
GND
Output
Power Supply
Oscillator Connection (Output)
XC2151x51
/INH
"H"
"L"
open
XC2151x55
/INH
"H"
"L"
open
Q0
Output
High Impedance (oscillator stopped)
Output
Q0
Output
High Impedance (oscillator stopped)
Output
"H" = High Level
"L" = Low Level
14
1023


XC2151T55 (Torex Semiconductor)
ICS FOR USE WITH CRYSTAL OSCILLATORS

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GOrdering Information
DESIGNATOR
DESCRIPTION
Supply Voltage :
a 5 = 5.0V
Product Series :
b 1 = Large output capability,
fundamental & overtone
Duty Level :
c
A = CMOS (V DD/2) & TTL
C = CMOS (VDD/2)
T = TTL
Output Capability :
d 5 = 10TTL
DESIGNATOR
DESCRIPTION
Stand-by Mode and Divider Ratio :
e 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 :
f (please refer to electrical characteristics tables)
Package :
M = SOT-26
g
Device Orientation :
h R= Embossed Tape (Standerd Feed)
L= Embossed Tape (Reverse Feed)
q wer
14
q
MARK
A
B
RATIO
f0/1
f0/2
MARK
C
D
RATIO
f0/4
f0/8
w
MARK
5
6
7
8
e
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
r
1024


XC2151T55 (Torex Semiconductor)
ICS FOR USE WITH CRYSTAL OSCILLATORS

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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
OC
OC
14
1025


XC2151T55 (Torex Semiconductor)
ICS FOR USE WITH CRYSTAL OSCILLATORS

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XC2151T51A / 55A (overtone)
VDD=5.0V, Fosc=20MHz, No Load, Ta = 25°C
PARAMETER
SYMBOL
CONDITIONS
MIN TYP MAX UNITS
Operating Supply Voltage
V DD
4.0 6.0
Input Voltage 'High'
V IH
2.4
Input Voltage 'Low'
V IL
0.4
Output Current 'High'
IOH VOH = 4.6V
- 10
Output Current 'Low'
I OL
VOL = 0.4V
16
Supply Current 1
IDD1 / INH = OPEN, Q0 = OPEN
18 25
Supply Current 2 (51A)
IDD2 / INH = "L"
25
Supply Current 2 (55A)
IDD2 / INH = "L"
16 23
Input Pull-Up Resistance RUP / INH = 4.5V
50
200
Internal Oscillator Capacitance
Cg,Cd
see note below
18 20 22
Internal Oscillator Feedback Resistance
Rf
5.0 5.5 6.1
Output Disable Leakage Current
I OZ
/ INH = "L"
10
V
V
V
mA
mA
mA
µA
mA
k
pF
k
µA
note : the values for Cg,Cd are the designed values.
XC2151T51D / 55D (overtone)
VDD=5.0V, Fosc=70MHz, 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 (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
I OH
I OL
I DD1
I DD2
I DD2
RUP
Cg,Cd
Rf
I OZ
note : the values for Cg,Cd are the designed values.
CONDITIONS
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"
MIN
4.0
2.4
16
50
9
2.7
TYP MAX
6.0
0.4
- 10
25 35
25
23 32
200
10 11
3.0 3.3
10
UNITS
V
V
V
mA
mA
mA
µA
mA
k
pF
k
µA
XC2151T (overtone)
PART No.
14 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 to 33MHz
30MHz to 45MHz
43MHz to 57MHz
55MHz to 70MHz
1026


XC2151T55 (Torex Semiconductor)
ICS FOR USE WITH CRYSTAL OSCILLATORS

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XC2151C51F / 55F (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 (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
I OH
I OL
I DD1
I DD2
I DD2
RUP
Cg,Cd
Rf
I OZ
note : the values for Cg,Cd are the designed values.
CONDITIONS
V OH = 4.6V
V OL = 0.4V
/ INH = OPEN, Q0 = OPEN
/ INH = "L"
/ INH = "L"
/ INH = 4.5V
see note below
/ INH = "L"
MIN
4.0
2.4
16
50
18
5.0
TYP MAX
6.0
0.4
- 10
18 25
25
16 23
200
20 22
5.5 6.1
10
UNITS
V
V
V
mA
mA
mA
µA
mA
k
pF
k
µA
XC2151C51L / 55L (overtone)
VDD=5.0V, Fosc=70MHz, 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 (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
I OH
I OL
I DD1
I DD2
I DD2
RUP
Cg,Cd
Rf
I OZ
note : the values for Cg,Cd are the designed values.
CONDITIONS
V OH = 4.6V
V OL = 0.4V
/ INH = OPEN, Q0 = OPEN
/ INH = "L"
/ INH = "L"
/ INH = 4.5V
see note below
/ INH = "L"
MIN
4.0
2.4
16
50
9
2.7
TYP MAX
6.0
0.4
- 10
25 35
25
23 32
200
10 11
3.0 3.3
10
UNITS
V
V
V
mA
mA
mA
µA
mA
k
pF
k
µA
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
14
1027


XC2151T55 (Torex Semiconductor)
ICS FOR USE WITH CRYSTAL OSCILLATORS

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XC2151A510 / 519 ( fundamental )
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
Input Pull-Up Resistance
Internal Oscillator Capacitance
Internal Oscillator Feedback Resistance
Output Disable Leakage Current
SYMBOL
V DD
V IH
V IL
I OH
I OL
I DD1
I DD2
RUP
Cg,Cd
Rf
I OZ
CONDITIONS
V OH = 4.6V
V OL = 0.4V
/ INH = OPEN, Q0 = OPEN
/ INH = "L"
/ INH = 4.5V
see note below
MIN
4.0
2.4
16
50
note : the values for Cg,Cd are the designed values with XC2151A510. The XC2151A519 is an external type.
TYP
- 10
2
16
5
MAX
6.0
0.4
12
5
200
10
UNITS
V
V
V
mA
mA
mA
µA
k
pF
ΜΩ
µA
XC2151A580 / 589 ( fundamental, f0 / 8 )
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
Input Pull-Up Resistance
Internal Oscillator Capacitance
Internal Oscillator Feedback Resistance
Output Disable Leakage Current
SYMBOL
V DD
V IH
V IL
I OH
I OL
I DD1
I DD2
RUP
Cg,Cd
Rf
I OZ
CONDITIONS
V OH = 4.6V
V OL = 0.4V
/ INH = OPEN, Q0 = OPEN
/ INH = "L"
/ INH = 4.5V
see note below
MIN
4.0
2.4
16
50
note : the values for Cg,Cd are the designed values with XC2151A580. The XC2151A589 is an external type.
TYP
- 10
2
16
5
MAX
6.0
0.4
12
5
200
10
UNITS
V
V
V
mA
mA
mA
µA
k
pF
ΜΩ
µA
XC2151A ( fundamental )
PART No.
XC2151A510
XC2151A520
XC2151A540
XC2151A580
DUTY LEVEL
CMOS (VDD /2), TTL
CMOS (VDD /2), TTL
CMOS (VDD /2), TTL
CMOS (VDD /2), TTL
XC2151A519 CMOS (VDD /2), TTL
XC2151A529 CMOS (VDD /2), TTL
14 XC2151A549 CMOS (VDD /2), TTL
XC2151A589 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 ) Cg/Cd (pF)
5.0 16
5.0 16
5.0 16
5.0 16
RECOMMENDED
FREQUENCY RANGE
4MHz to 30MHz
4MHz to 30MHz
4MHz to 30MHz
4MHz to 30MHz
5.0 16 (ext.)
5.0 16 (ext.)
5.0 16 (ext.)
5.0 16 (ext.)
4MHz to 30MHz
4MHz to 30MHz
4MHz to 30MHz
4MHz to 30MHz
1028


XC2151T55 (Torex Semiconductor)
ICS FOR USE WITH CRYSTAL OSCILLATORS

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XC2151T (overtone, fundamental)
TTL Duty, VDD=5.0V, Ta = 25°C
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
45
TYP
MAX
5
5
55
UNITS
nsec
nsec
%
14
1029


XC2151T55 (Torex Semiconductor)
ICS FOR USE WITH CRYSTAL OSCILLATORS

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XC2151C (overtone, fundamental)
TTL Duty, VDD=5.0V, Ta = 25°C
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 @ V DD / 2
MIN
45
TYP MAX
5
5
55
UNITS
nsec
nsec
%
14
1030




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