DS78LS120QML Datasheet, PDF (3/12 Pages) Texas Instruments – Dual Differential Line Receiver (Noise Filtering and Fail-Safe)

DS78LS120 is OBSOLETE
DS78LS120QML, DS78LS120
www.ti.com
SNLS370C – SEPTEMBER 1999 – REVISED APRIL 2013
Electrical Characteristics⁽¹⁾⁽²⁾ (continued)
Symbol
Parameter
Conditions
I_{IN (1)}
I_{IN (0)}
V_IH
V_IL
I_OS
Logical “1” Strobe Input Current
Logical “0” Strobe Input Current
Logical “1” Strobe Input Voltage
Logical “0” Strobe Input Voltage
Output Short-Circuit Current
V_STROBE = 5.5V, V_DIFF = 3V
V_STROBE = 0V, V_DIFF = −3V
V_OL ≤ 0.5, I_OUT = 4mA
V_OH ≥ 2.5V, I_OUT, = −400 μA
V_OUT = 0V, V_CC = 5.5V, V_STROBE = 0V⁽⁴⁾
(4) Only one output at a time should be shorted.
Min Typ Max Units
1 100 μA
−290 −400 μA
2.0 1.12
V
1.12 0.8 V
−30 −100 −170 mA
Switching Characteristics
V_CC = 5V, T_A = 25°C
Symbol
Parameter
t_pd0(D)
t_pd1(D)
t_pd0(S)
t_pd1(S)
Differential Input to “0” Output
Differential Input to “1” Output
Strobe Input to “0” Output
Strobe Input to “1” Output
Conditions
Response Pin Open, C_L = 15 pF, R_L = 2 kΩ
Min Typ Max Units
38
60
ns
38
60
ns
16
25
ns
12
25
ns
AC Test Circuit and Switching Time Waveforms
Includes probe and test fixture capacitance
Figure 2. Differential and Strobe Input Signal
Note: Optimum switching response is obtained by minimizing stray capacitance on Response Control pin (no external
connection).
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