MAX14830 Datasheet, PDF (8/68 Pages) Maxim Integrated Products – Quad Serial UART with 128-Word FIFOs

MAX14830
Quad Serial UART with 128-Word FIFOs
ABSOLUTE MAXIMUM RATINGS
(Voltages referenced to AGND.)
VL, VA, VEXT, XIN................................................. -0.3V to +4.0V
V18, XOUT............ -0.3V to the lesser of (VA + 0.3V) and +2.0V
RST, IRQ, MOSI/A1, CS/A0, SCLK/SCL,
MISO/SDA, LDOEN, SPI/I2C................... -0.3V to (VL + 0.3V)
TX0, RX0, CTS0, GPIO0, GPIO1,
GPIO2, GPIO3...................................... -0.3V to (VEXT + 0.3V)
TX1, RX1, CTS1, GPIO4, GPIO5,
GPIO6, GPIO7...................................... -0.3V to (VEXT + 0.3V)
TX2, RX2, CTS2, GPIO8, GPIO9,
GPIO10, GPIO11.................................. -0.3V to (VEXT + 0.3V)
TX3, RX3, CTS3, GPIO12, GPIO13,
GPIO14, GPIO15.................................. -0.3V to (VEXT + 0.3V)
DGND................................................................... -0.3V to +0.3V
Continuous Power Dissipation (TA = +70NC)
TQFN (derate 38.5mW/NC above +70NC).....3076.9mW
Operating Temperature Range ......................... -40NC to +85NC
Maximum Junction Temperature .................................. +150NC
Storage Temperature Range .......................... -65NC to +150NC
Lead Temperature (soldering, 10s)................................... 300NC
Soldering Temperature (reflow) ......................................+260NC
PACKAGE THERMAL CHARACTERISTICS (Note 1)
TQFN
Junction-to-Ambient Thermal Resistance (BJA)............26NC/W
Junction-to-Case Thermal Resistance (BJC)...................1NC/W
Note 1: Package thermal resistances were obtained using the method described in JEDEC specification JESD51-7, using a four-layer
board. For detailed information on package thermal considerations, refer to www.maximintegrated.com/thermal-tutorial.
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute
maximum rating conditions for extended periods may affect device reliability.
DC ELECTRICAL CHARACTERISTICS
(VA = +2.35V to +3.6V, VL = +1.71V to +3.6V, VEXT = +1.71V to +3.6V, TA = -40NC to +85NC, unless otherwise noted. Typical values
are at VA = +2.5V, VL = +1.8V, VEXT = +2.8V, TA = +25NC.) (Notes 2, 3)
PARAMETER
Digital Interface Supply Voltage
Analog Supply Voltage
UART Interface Logic Supply
Voltage
SYMBOL
VL
VA
VEXT
CONDITIONS
MIN TYP MAX UNITS
1.71
3.6
V
2.35
3.6
V
1.71
3.6
V
Logic Supply Voltage
V18
CURRENT CONSUMPTION
1.65
1.95
V
VA Supply Current
1.8MHz crystal oscillator active, PLL
disabled, SPI/I²C interface idle, UART
interfaces idle, VLDOEN = VL
I­A
Baud rate = 1Mbps, 20MHz external clock,
SPI/I²C interface idle, PLL disabled, all
UARTs in loopback mode, VLDOEN = 0V
400
FA
0.5
mA
VA Shutdown Supply Current
IASHDN
Shutdown mode, VLDOEN = 0V, VRST = 0V,
all inputs and outputs are idle
35
FA
VL Shutdown or Sleep Supply
Current
IL
Shutdown mode, VLDOEN = 0V, VRST = 0V,
all inputs and outputs are idle
12
FA
VEXT Shutdown Supply Current
IEXT
Shutdown mode, VLDOEN = 0V, VRST = 0V,
all inputs and outputs are idle
8
FA
8  
Maxim Integrated