LTC1688IS Datasheet, PDF (2/12 Pages) Linear Dimensions Semiconductor – 100Mbps RS485 Hot Swapable Quad Drivers

LTC1688/LTC1689
ABSOLUTE AXI U RATI GS
(Note 1)
Supply Voltage (V_DD) ................................................ 7V
Enable Input Voltages ................. – 0.5V to (V_DD + 0.5V)
Enable Input Currents ..................... – 100mA to 100mA
Driver Input Voltages .................. – 0.5V to (V_DD + 0.5V)
Driver Output Voltages ................. (– 12V + V_DD) to 12V
Driver Input Currents ...................... – 100mA to 100mA
Short-Circuit Duration (V_OUT: – 7V to 10V) ...... Indefinite
Operating Temperature Range
LTC1688C/LTC1689C ............................. 0°C to 70°C
LTC1688I/LTC1689I .......................... – 40°C to 85°C
Storage Temperature Range ................ – 65°C to 150°C
Lead Temperature (Soldering, 10 sec)................. 300°C
PACKAGE/ORDER I FOR ATIO
DI1 1
DO1A 2
DO1B 3
EN (EN12*) 4
DO2B 5
DO2A 6
DI2 7
GND 8
TOP VIEW
16 V_DD
15 DI4
14 DO4A
13 DO4B
12 ENB (EN34*)
11 DO3B
10 DO3A
9 DI3
ORDER PART
NUMBER
LTC1688CS
LTC1689CS
LTC1688IS
LTC1689IS
S PACKAGE
16-LEAD PLASTIC SO
*LTC1689 ONLY
T_JMAX = 150°C, θ_JA = 90°C/ W
Consult factory for parts specified with wider operating temperature ranges.
DC ELECTRICAL CHARACTERISTICS The q denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T_A = 25°C.
SYMBOL PARAMETER
CONDITIONS
MIN TYP MAX
UNITS
V_DD = 5V, Per Driver, T_A = 25°C, Unless Otherwise Noted (Note 2)
V_OD1
Differential Driver Output (Unloaded)
I_OUT = 0
V_OD2
Differential Driver Output (With Load)
R = 50Ω (RS422)
R = 25Ω (RS485), Figure 1
q
q
2
q
1.5
V_DD
V
V
3.0
V
∆V_OD
Change in Magnitude of Driver Differential R = 25Ω or 50Ω, Figure 1
q
Output Voltage for Complementary
Output States
0.2
V
V_OC
∆V_OC
Driver Common Mode Output Voltage
Change in Magnitude of Driver Common
Mode Output Voltage for Complementary
Output States
R = 25Ω or 50Ω, Figure 1
R = 25Ω or 50Ω, Figure 1
q
2
q
3
V
0.2
V
V_IH
Input High Voltage
V_IL
Input Low Voltage
I_IN1
Input Current
I_OZ
Three-State (High Impedance)
Output Current
EN, ENB, EN12, EN34, DI
EN, ENB, EN12, EN34, DI
EN, ENB, EN12, EN34, DI
V_OUT = – 7V to 12V
q
2
V
q
0.8
V
q
±1
µA
q
±2 ±200
µA
I_DD
Supply Current of Entire Device
No Load, Digital Input Pins = 0V or V_DD
q
9
18
mA
I_OSD1
Driver Short-Circuit Current, V_OUT = HIGH V_OUT = – 7V to 10V
q
±20
mA
I_OSD2
Driver Short-Circuit Current, V_OUT = LOW V_OUT = – 7V to 10V
q
±20
mA
V_DD = 3V, Per Driver, T_A = 25°C, Unless Otherwise Noted (Note 2)
V_OD1
Differential Driver Output (Unloaded)
I_OUT = 0
q
V_DD
V
V_OD2
Differential Driver Output (With Load)
R = 50Ω (RS422)
R = 25Ω (RS485), Figure 1
1.5
V
q
0.65
2.0
V
∆V_OD
Change in Magnitude of Driver Differential
Output Voltage for Complementary
Output States
R = 25Ω or 50Ω, Figure 1
0.1
V
V_OC
Driver Common Mode Output Voltage
R = 25Ω or 50Ω, Figure 1
1.3
V
16889fa
2