
LC74950BG
No.A1647-3/37
DC Characteristics at Ta = -30 to +70
°C, DVDD33 = 3.3V±0.3V (other than low-voltage support models),
DVDD15= 1.5±10%
Ratings
Parameter
Symbol
Conditions
min
typ
max
unit
CMOS level inputs
(5V withstand voltage pin)
0.8DVDD33
5.5
V
CMOS level inputs (2.4V to 3.6V or
non-5V withstand voltage pin)
0.8DVDD33
DVDD33
V
CMOS level Schmitt inputs
(5V withstand voltage pin)
2.0
5.5
V
Input high-level voltage
VIH
CMOS level Schmitt inputs (2.4V to 3.6V or
non-5V withstand voltage pin)
0.8DVDD33
DVDD33
V
CMOS level inputs
0
0.2VDD33
V
Input low-level voltage
VIL
CMOS level Schmitt inputs
0
0.2VDD33
V
VI=DVDD
10
μA
Input high-level current
IIH
VI=DVDD, with pull-down resistance
100
μA
Input low-level current
IIL
VI=VSS
-10
μA
Output high-level voltage
VOH
CMOS (Pin G/I: IOH=-4mA, Pin F: when
set to -6mA)
DVDD-0.6
V
Output low-level voltage
VOL
CMOS
0.4
V
Output leak current
IOZ
At output of high-impedance
-10
10
μA
3.0V to 3.6V
58
k
Ω
Pull-down resistor
RDN
2.4V to 3.6V
70
k
Ω
Dynamic supply current
(DVDD33)
Outputs open, tck=27MHz
natural image, Ta=25
°C
13
mA
Dynamic supply current
(DVDD15)
tck=27MHz: natural image, Ta=25
°C
7
mA
Dynamic supply current
(AVDD33)
tck=27MHz: natural image, Ta=25
°C
52
mA
Dynamic supply current
(AVDD15)
IDDOP
tck=27MHz: natural image, Ta=25
°C
0.1
mA
Static supply current: *1
IDDST
Outputs open, VI=VSS, Ta=25°C
10
μA
*1: There is an input terminal which builds in pull down resistance. Please note that there is no guarantee about static
consumption current depending on circuit composition.
A/D Convertor Characteristics at Ta = 25
°C, DVSS = 0V, AVSS = 0V
Parameter
Symbol/pin
min
typ
max
Unit
ADC resolution
9bit
Clock frequency
Fclk
5
40
MHz
SNR
48
dB
DNL
±0.5
LSB
INL
±1.0
LSB
External capacitance
Analog input coupling capacitance
Analog video pin
0.1
μF
Top level reference fixed capacitance
VRTx pin
0.01
μF
Bottom level reference capacitance
VRBx pin
0.01
μF
Analog input frequency
FAIN
10
MHz
Analog input amplitude
1.0
V
ADC stabilization time (time required to restore from
standby mode)
500
ms
PLL lock time
3
ms