DS78LS120QML Datasheet, PDF (2/12 Pages) Texas Instruments – Dual Differential Line Receiver (Noise Filtering and Fail-Safe)

DS78LS120QML, DS78LS120
DS78LS120 is OBSOLETE
SNLS370C – SEPTEMBER 1999 – REVISED APRIL 2013
www.ti.com
These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam
during storage or handling to prevent electrostatic damage to the MOS gates.
Absolute Maximum Ratings⁽¹⁾⁽²⁾
Supply Voltage
Input Voltage
Strobe Voltage
Output Sink Current
Storage Temperature Range
Maximum Power Dissipation at 25°C⁽³⁾
Lead Temperature (Soldering, 4 sec)
7V
±25V
7V
50 mA
−65°C to +150°C
1433 mV
260°C
(1) “Absolute Maximum Ratings” are those values beyond which the safety of the device cannot be ensured. Except for “Operating
Temperature Range” they are not meant to imply that the devices should be operated at these limits. The table of “Electrical
Characteristics” provides conditions for actual device operation.
(2) If Military/Aerospace specified devices are required, please contact the TI Sales Office/Distributors for availability and specifications.
(3) Derate CDIP package 9.6 mW/°C above 25°C.
Operating Conditions
Supply Voltage (V_CC)
Temperature (T_A)
Common-Mode Voltage (V_CM)
Min
Max
4.5
5.5
−55
+125
−15
+15
Units
V
°C
V
Electrical Characteristics⁽¹⁾⁽²⁾
Symbol
Parameter
V_TH
Differential Threshold Voltage
V_TL
Differential Threshold Voltage
V_TH
Differential Threshold Voltage
V_TL
with Fail-Safe Offset = 5V
R_IN
Input Resistance
R_T
Line Termination Resistance
R_O
Offset Control Resistance
I_IND
Data Input Current (Unterminated)
V_THB
Input Balance⁽³⁾
V_OH
Logical “1” Output Voltage
V_OL
Logical “0” Output Voltage
I_CC
Power Supply Current
Conditions
I_OUT = −400 μA, V_OUT ≥ 2.5V
−7V ≤ V_CM ≤ 7V
−15 ≤ V_CM ≤15V
I_OUT = 4 mA, V_OUT ≤ 0.5V
−7V ≤ V_CM ≤7V
−15V ≤ V_CM ≤ 15V
I_OUT = −400 μA, V_OUT ≥ 2.5V
−7V ≤ V_CM ≤ 7V
I_OUT = 4 mA, V_OUT ≤ 0.5V
−7V ≤ V_CM ≤ 7V
−15V ≤ V_CM ≤ 15V, 0V ≤ V_CC ≤ 7V
T_A = 25°C
T_A = 25°C
V_CM = 10V
V_CM = 0V
0V ≤ V_CC ≤ 7V
V_CM = −10V
I_OUT = −400 μA, V_OUT ≥ 2.5V,
R_S = 500Ω
−7V ≤ V_CM 7V
I_OUT = 4 mA, V_OUT ≤ 0.5V,
R_S = 500Ω
−7V ≤ V_CM ≤ 7V
I_OUT = −400 μA, V_DIFF = 1V, V_CC = 4.5V
I_OUT = 4 mA, V_DIFF = −1V, V_CC = 4.5V
V_CC = 5.5V
V_CM = 15V
V_DIFF = −0.5V, (Both Receivers)
V_CM = −15V
Min Typ Max Units
0.06 0.2 V
0.06 0.3 V
−0.08 −0.2 V
−0.08 −0.3 V
0.47 0.7 V
−0.2 −0.42
V
4
5
kΩ
100 180 300 Ω
42 56 70 kΩ
2 3.1 mA
0 −0.5 mA
−2 −3.1 mA
0.1 0.4 V
−0.1 −0.4 V
2.5 3
V
0.35 0.5 V
10 16 mA
10 16 mA
(1) Unless otherwise specified min/max limits apply across the −55°C to +125°C temperature range for the DS78LS120QML. All typical
values are for T_A = 25°C, V_CC = 5V and V_CM = 0V.
(2) All currents into device pins shown as positive, out of device pins as negative, all voltages referenced to ground unless otherwise noted.
All values shown as max or min on absolute value basis.
(3) Refer to EIA-RS422 for exact conditions.
2
Submit Documentation Feedback
Copyright © 1999–2013, Texas Instruments Incorporated
Product Folder Links: DS78LS120QML DS78LS120