DS88C120 Datasheet, PDF (3/10 Pages) National Semiconductor (TI) – Dual CMOS Compatible Differential Line Receiver

Electrical Characteristics (Notes 2 and 3) (Continued)
Symbol
Parameter
Conditions
Min Typ Max Units
V_IL
Logical ‘‘0’’ Strobe Input
V_OH V_CC b 1 2V
Voltage
I_OUT e b200 mA
V_CC e 5V
V_CC e 10V
V_CC e 15V
I_OS
Output Short-Circuit Current V_OUT e 0V V_CC e 15V V_STROBE e 0V (Note 4)
25 15
V
50 20
V
75 25
V
b5 b20 b40 mA
Note 1 ‘‘Absolute Maximum Ratings’’ are those values beyond which the safety of the device cannot be guaranteed 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
Note 2 Unless otherwise specified min max limits apply across the b55 C to a125 C temperature range for the DS78C120 and across the 0 C to a70 C range
for the DS88C120 All typical values for T_A e 25 C V_CC e 5V and V_CM e 0V
Note 3 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
Note 4 Only one output at a time should be shorted
Note 5 Refer to EIA-RS422 for exact conditions
Switching Characteristics V_CC e 5V T_A e 25 C
Symbol
Parameter
Conditions
Min
Typ
Max
Units
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
C_L e 50 pF
C_L e 50 pF
C_L e 50 pF
C_L e 50 pF
60
100
ns
100
150
ns
30
70
ns
100
150
ns
AC Test Circuit and Switching Time Waveforms
Differential and Strobe Input Signal
Includes probe and test fixture capacitance
TL F 5801 – 3
t_r e t_f s 10 ns
PRR e 1 MHz
Note Optimum switching response is obtained by minimizing stray capacitance on Response Control pin (no external connection)
TL F 5801 – 4
3
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