Datasheet

SPI/MICROWIRE-Compatible UART and ±15kV ESD-
Protected RS-232 Transceivers with Internal Capacitors
ELECTRICAL CHARACTERISTICS—MAX3111E (continued)
(V
CC
= +3.0V to +3.6V, V
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values are measured for baud rate set to 9600baud at
V
CC
= +3.3V, T
A
= +25°C.) (Note 2)
Output Fall Time t
f
10 ns
TX, RTS, DOUT, IRQ; C
LOAD
= 100pF
CS Rising Edge to SCLK Rising
Edge
t
CS1
200 ns
CS High Pulse Width
t
CSW
200 ns
Output Rise Time t
r
10 ns
TX, RTS, DOUT; C
LOAD
= 100pF
SCLK Rising Edge to CS Falling
t
CS0
100 ns
SCLK High Time t
CH
100 ns
SCLK Low Time t
CL
100 ns
SCLK Period t
CP
238 ns
SCLK Fall to DOUT Valid t
DO
100 ns
DIN to SCLK Setup Time t
DS
100 ns
DIN to SCLK Hold Time t
DH
0 ns
C
LOAD
= 100pF
CS to SCLK Hold Time
t
CSH
0 ns
CS Low to DOUT Valid
t
DV
100 ns
CS High to DOUT Tri-State
t
TR
100 ns
CS to SCLK Setup Time
t
CSS
100 ns
C
LOAD
= 100pF
C
LOAD
= 100pF, R
CS
= 10kΩ
0.9I
SINK
= 25mA, TX only
Output Low Voltage V
OL2
0.4
V
±25
V
CC
- 0.5
I
SINK
= 4mA; DOUT, RTS
Output Low Voltage V
OL1
0.4 V
Output High Voltage V
OH1
V
CC
- 0.6 V
Output Voltage Swing ±5 ±5.4 V
Output Resistance R
O
300 10M Ω
Output Short-Circuit Current ±60 mA
Output Leakage Current I
LKG2
µA
I
SOURCE
= 10mA, TX only
PARAMETER SYMBOL MIN TYP MAX UNITS
Output Leakage Current I
LKG3
±1 µA
Output High Voltage V
OH2
V
CC
- 0.5
V
Output Capacitance C
OUT1
5 pF
Output Leakage Current I
LKG4
±1 µA
Output Low Voltage V
OL3
0.4 V
Output Capacitance C
OUT2
5 pF
DOUT only; CS = V
CC
I
SINK
= 1.6mA
I
SOURCE
= 1mA
3kΩ load on all transmitter outputs
V
CC
= V+ = V- = 0, V
OUT
= ±2V
I
SOURCE
= 5mA; DOUT, RTS
V
CC
= 0 or 3.6V, V
OUT
= ±12V,
transmitters disabled
V
IRQ
= 3.6V
I
SINK
= 4mA
CONDITION
RS-232 RECEIVER OUTPUTS (R_OUT)
RS-232 TRANSMITTER OUTPUTS (T_OUT)
UART OUTPUTS (DOUT, TX, RTS)
UART IRQ OUTPUT (IRQ = open drain)
UART AC TIMING
6
Maxim Integrated
MAX3110E/MAX3111E