No. 5815-5/23
LC72121, 72121M, 72121V
Parameter
Symbol
Conditions
Ratings
Unit
min
typ
max
VOL1
PD: IO = 1 mA
1.0
V
VOL2
BO1 to BO4, IO1, IO2: IO = 1 mA
0.2
V
Output low-level voltage
BO1 to BO4, IO1, IO2: IO = 8 mA
1.6
V
VOL3
DO: IO = 1 mA
0.2
V
DO: IO = 5 mA
1.0
V
VOL4
AOUT: IO = 1 mA, AIN = 1.3 V
0.5
V
IIH1
CE, DI, CL: VI = 6.5 V
5.0
A
IIH2
IO1, IO2: VI = 13 V
5.0
A
Input high-level current
IIH3
XIN: VI = VDD
1.3
8
A
IIH4
FMIN, AMIN: VI = VDD
2.5
15
A
IIH5
IFIN: VI = VDD
5.0
30
A
IIH6
AIN: VI = 6.5 V
200
nA
IIL1
CE, DI, CL: VI = 0 V
5.0
A
IIL2
IO1, IO2: VI = 0 V
5.0
A
Input low-level current
IIL3
XIN: VI = 0 V
1.3
8
A
IIL4
FMIN, AMIN: VI = 0 V
2.5
15
A
IIL5
IFIN: VI = 0 V
5.0
30
A
IIL6
AIN: VI = 0 V
200
nA
Output off leakage current
IOFF1
BO1 to BO4, IO1, IO2, AOUT: VO = 13 V
5.0
A
IOFF2
DO: VO = 6.5 V
5.0
A
High-level 3-state off leakage current
IOFFH
PD: VO = VDD
0.01
200
nA
Low-level 3-state off leakage current
IOFFL
PD: VO = 0 V
0.01
200
nA
Input capacitance
CIN
FMIN
6
pF
IDD1
VDD: Xtal = 7.2 MHz, fIN2 = 130 MHz,
2.5
6
mA
VIN2 = 20 mVrms
Supply current
VDD: PLL block stopped (PLL inhibit mode)
IDD2
Crystal oscillator operating
0.3
mA
(crystal frequency: 7.2 MHz)
IDD3
VDD: PLL block stopped, crystal oscillator
10
A
stopped
Continued from preceding page.
Pin Descriptions
Pin
Pin No.
Type
Function
Equivalent circuit
name
LC72121
Xtal
Crystal oscillator element connections (4.5 or 7.2 MHz)
XIN
XOUT
1
22
1
24
LC72121M
LC72121V
Local
oscillator
signal input
FMIN is selected when DVS in the serial data is set to 1.
Input frequency: 10 to 160 MHz
The signal is passed through an internal divide-by-two prescaler and
then input to the swallow counter.
The divisor can be set to a value in the range 272 to 65535. Since
the internal divide-by-two prescaler is used, the actual divisor will be
twice the set value.
FMIN
16
17
Local
oscillator
signal input
AMIN is selected when DVS in the serial data is set to 0.
When SNS in the serial data is set to 1:
Input frequency: 2 to 40 MHz
The signal is input to the swallow counter directly.
The divisor can be set to a value in the range 272 to 65535. The
set value becomes the actual divisor.
When SNS in the serial data is set to 0:
Input frequency: 0.5 to 10 MHz
The signal is input to a 12-bit programmable divider directly.
The divisor can be set to a value in the range 4 to 4095. The set
value becomes the actual divisor.
AMIN
15
16
Continued on next page.