Datasheet
LTM2882
3
2882fd
elecTrical characTerisTics
The l denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C. LTM2882-3 V
CC
= 3.3V, LTM2882-5 V
CC
= 5.0V, V
L
= V
CC
, and GND =
GND2 = 0V, ON = V
L
unless otherwise noted.
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
Supplies
V
CC
Input Supply Range LTM2882-3
l
3.0 3.3 3.6 V
LTM2882-5
l
4.5 5.0 5.5 V
V
L
Logic Supply Range
l
1.62 5.5 V
I
CC
Input Supply Current ON = 0V
l
0 10 µA
LTM2882-3, No Load
l
24 30 mA
LTM2882-5, No Load
l
17 21 mA
V
CC2
Regulated Output Voltage, Loaded LTM2882-3 DE = 0V, I
LOAD
= 100mA
l
4.7 5.0 V
LTM2882-3, H/MP-Grade, I
LOAD
= 90mA
l
4.75 V
LTM2882-5 DE = 0V, I
LOAD
= 150mA
l
4.7 5.0 V
V
CC2(NOLOAD)
Regulated Output Voltage, No Load DE = 0, No Load 4.8 5.0 5.35 V
Efficiency I
CC2
= 100mA, LTM2882-5 (Note 2) 65 %
I
CC2
Output Supply Short-Circuit Current
l
250 mA
Driver
V
OLD
Driver Output Voltage Low R
L
= 3kΩ
l
–5 –5.7 V
V
OHD
Driver Output Voltage High R
L
= 3kΩ
l
5 6.2 V
I
OSD
Driver Short-Circuit Current V
T1OUT
, V
T2OUT
= 0V, V
CC2
= 5.5V
l
±35 ±70 mA
I
OZD
Driver Three-State (High Impedance)
Output Current
DE = 0V, V
T1OUT
, V
T2OUT
= ±15V
l
±0.1 ±10 µA
Receiver
V
IR
Receiver Input Threshold Input Low
l
0.8 1.3 V
Input High
Input High, H/MP-Grade
l
l
1.7 2.5
2.7
V
V
V
HYSR
Receiver Input Hysteresis
l
0.1 0.4 1.0 V
R
IN
Receiver Input Resistance –15V ≤ (V
R1IN
, V
R2IN
) ≤ 15V
l
3 5 7 kΩ
Logic
V
ITH
Logic Input Threshold Voltage ON, T1IN, T2IN, DIN = 1.62V ≤ V
L
< 2.35V
l
0.25•V
L
0.75•V
L
V
ON, T1IN, T2IN, DIN = 2.35V ≤ V
L
≤ 5.5V
l
0.4 0.67•V
L
V
DE
l
0.4 0.67•V
CC2
V
I
INL
Logic Input Current
l
±1 µA
V
HYS
Logic Input Hysteresis T1IN, T2IN, DIN (Note 2) 150 mV
V
OH
Logic Output High Voltage R1OUT, R2OUT
I
LOAD
= –1mA (Sourcing), 1.62V ≤ V
L
< 3.0V
I
LOAD
= –4mA (Sourcing), 3.0V ≤ V
L
≤ 5.5V
l
l
V
L
– 0.4
V
L
– 0.4
V
V
DOUT, I
LOAD
= –4mA (Sourcing)
l
V
CC2
– 0.4 V
V
OL
Logic Output Low Voltage R1OUT, R2OUT
I
LOAD
= 1mA (Sinking), 1.62V ≤ V
L
< 3.0V
I
LOAD
= 4mA (Sinking), 3.0V ≤ V
L
≤ 5.5V
l
l
0.4
0.4
V
V
DOUT, I
LOAD
= 4mA (Sinking)
l
0.4 V
ESD (HBM) (Note 2)
RS232 Driver and Receiver Protection (T1OUT, T2OUT, R1IN, R2IN) to (V
CC2
, GND2) ±10 kV
(T1OUT, T2OUT, R1IN, R2IN) to (V
CC
, V
L
, GND) ±10 kV
Isolation Boundary (V
CC2
, GND2) to (V
CC
, V
L
, GND) ±10 kV