Datasheet

9Maxim Integrated
Quad Serial UART with 128-Word FIFOs
MAX14830
DC ELECTRICAL CHARACTERISTICS (continued)
(V
A
= +2.35V to +3.6V, V
L
= +1.71V to +3.6V, V
EXT
= +1.71V to +3.6V, T
A
= -40NC to +85NC, unless otherwise noted. Typical values
are at V
A
= +2.5V, V
L
= +1.8V, V
EXT
= +2.8V, T
A
= +25NC.) (Notes 2, 3)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
V
18
Input Power-Supply Current
in Shutdown Mode
I
18SHDN
Shutdown mode, V
LDOEN
= 0V, V
RST
= 0V,
all inputs and outputs are idle
200
FA
V
18
Input Power-Supply Current I
18
Baud rate = 1Mbps, 20MHz external clock,
PLL disabled, all UARTs in loopback mode,
V
LDOEN
= 0V (Note 4)
5 mA
SCLK/SCL, MISO/SDA
MISO/SDA Output Low Voltage
in I
2
C Mode
V
OL,I2C
I
LOAD
= -3mA, V
L
> 2V 0.4
V
I
LOAD
= -3mA, V
L
< 2V 0.2 x V
L
MISO/SDA Output Low Voltage
in SPI Mode
V
OL,SPI
I
LOAD
= -2mA 0.4 V
MISO/SDA Output High Voltage
in SPI Mode
V
OH,SPI
I
LOAD
= 2mA
V
L
-
0.4
V
Input Low Voltage V
IL
SPI and I
2
C mode 0.3 x V
L
V
Input High Voltage V
IH
SPI and I
2
C mode 0.7 x V
L
V
Input Hysteresis V
HYST
SPI and I
2
C mode 0.05 x V
L
V
Input Leakage Current I
IL
V
IN
= 0 to V
L
, SPI and I
2
C mode -1 +1
FA
Input Capacitance C
IN
SPI and I
2
C mode 5 pF
SPI/I2C, CS/A0, MOSI/A1 INPUTS
Input Low Voltage V
IL
SPI and I
2
C mode 0.3 x V
L
V
Input High Voltage V
IH
SPI and I
2
C mode 0.7 x V
L
V
Input Hysteresis V
HYST
SPI and I
2
C mode 50 mV
Input Leakage Current I
IL
V
IN
= 0 to V
L
, SPI and I
2
C mode -1 +1
FA
Input Capacitance C
IN
SPI and I
2
C mode 5 pF
IRQ OUTPUT (OPEN DRAIN)
Output Low Voltage V
OL
I
LOAD
= -2mA 0.4 V
Output Leakage Current I
LK
V
IRQ
= 0 to V
L
, IRQ is not asserted
-1 +1
FA
LDOEN AND RST INPUTS
Input Low Voltage V
IL
0.3 x V
L
V
Input High Voltage V
IH
0.7 x V
L
V
Input Hysteresis V
HYST
50 mV
Input Leakage Current I
IN
V
IN
= 0 to V
L
-1 +1
FA
UART INTERFACE
RTS0, RTS1, RTS2, RTS3, TX0, TX1, TX2, TX3 OUTPUTS
Output Low Voltage V
OL
I
LOAD
= -2mA 0.4 V
Output High Voltage V
OH
I
LOAD
= 2mA V
EXT
- 0.4 V
Input Leakage Current I
IN
Output is three-stated, V
RTS_
= 0 to V
EXT
-1 +1
FA
Input Capacitance C
IN
High-Z mode 5 pF