LMH2190 Datasheet, PDF (4/24 Pages) National Semiconductor (TI) – Quad Channel 27 MHz Clock Tree Driver with I2C Interface

Symbol
Parameter
Condition
Clock Request Output (SCLK_REQ)
tp_LH
Propagation Delay, Push-Pull 50% to 50%
and Open Source, Figure 2,
(Note 7)
tp_HL
Propagation Delay, Push-Pull 50% to 50%
and Open Drain, Figure 2,
(Note 7)
V_OH
SCLK_REQ Output Voltage High SCLK_REQ = -500 µA, Push-Pull
Level
Output
SCLK_REQ = -500 µA, Open Source
Output
V_OL
SCLK_REQ Output Voltage Low SCLK_REQ = 500 µA, Push-Pull Output
Level
SCLK_REQ = 500 µA, Open Drain
Output
Clock Request Inputs (CLK_REQ1/2/3/4)
t_SET
Setup Time from CLK_REQx to
SCLK_IN, to enable CLKx,
Figure 4, (Note 7)
V_IH
CLK_REQ1/2/3/4 Input Voltage
High Level
V_IL
CLK_REQ1/2/3/4 Input Voltage
Low Level
I_IH
CLK_REQ1/2/3/4 Input Current 200 kΩ internal pull down resistor.
High Level
CLK_REQ1/2/3/4 = 1.8V
Without internal / external pull down
resistor. CLK_REQ1/2/3/4 = 1.8V
I_IL
CLK_REQ1/2/3/4 Input Current V_IL = V_SS
Low Level
SCL and SDA Inputs, V_ENABLE = 1.8V (Note 10)
V_IH
SCL and SDA Input Voltage High
Level
V_IL
SCL and SDA Input Voltage Low
Level
I_IH
SCL and SDA Input Current High SCL/SDA = V_ENABLE
Level
I_IL
SCL and SDA Input Current Low 100 kΩ internal Pull-up resistor, SCL/
Level
SDA = V_SS
V_OL
SDA Output Voltage Low Level SDA = 3 mA
ENABLE Input
V_IH
ENABLE Input Voltage High
Level
V_IL
ENABLE Input Voltage Low Level
I_IH
ENABLE Input Current High
ENABLE = V_OUT
Level
I_IL
LDO
ENABLE Input Current Low Level ENABLE = V_SS
V_OUT
I_LOAD
V_DO
I_SC
Output Voltage
Load Current (Note 12)
Dropout Voltage (Note 14)
Short Circuit Current Limit
I_OUT = 1 mA
V_OUT > 1.74V
V_OUT = 1.7V, I_OUT = 10 mA
Min
(Note 6)
1.52
1.52
16
0.8 x
V_{DD_IO}
-0.1
0.8 x
V_ENABLE
-28
1.65
-0.1
1.78
0
Typ
(Note 5)
21
15
8.3
0
0
0
-18
1.805
100
300
Max
(Note 6)
32
21
0.2
0.2
0.2 x
V_{DD_IO}
12.7
0.1
0.2 x
V_ENABLE
0.1
0.2
2
0.5
0.1
1.82
10
150
Units
ns
V
V
ns
V
V
µA
µA
V
V
µA
µA
V
V
V
µA
µA
V
mA
mV
mA
www.national.com
4