Datasheet

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DRIVER SECTION
Switching Characteristics
SN75185
MULTIPLE RS-232 DRIVERS AND RECEIVERS
SLLS181D–DECEMBER 1994 – REVISED JANUARY 2006
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Electrical Characteristics
over recommended operating free-air temperature range, V
DD
= 9 V, V
SS
=–9V,V
CC
= 5 V (unless otherwise noted)
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
V
OH
High-level output voltage V
IL
= 0.8 V, R
L
=3kΩ, See Figure 1 6 7.5 V
V
OL
Low-level output voltage
(1)
V
IH
= 1.9 V, R
L
=3kΩ, See Figure 1 –7.5 –6 V
I
IH
High-level input current V
I
= 5 V, See Figure 2 10 μA
I
IL
Low-level input current V
I
= 0, See Figure 2 –1.6 mA
I
OS(H)
High-level short-circuit output current
(2)
V
IL
= 0.8 V, V
O
= 0, See Figure 1 –4.5 –12 –19.5 mA
I
OS(L)
Low-level short-circuit output current V
IH
= 2 V, V
O
= 0, See Figure 1 4.5 12 19.5 mA
r
o
Output resistance
(3)
V
CC
=V
DD
=V
SS
=0, V
O
=–2Vto2V 300 Ω
(1) The algebraic convention, in which the more positive (less negative) limit is designated as maximum, is used in this data sheet for logic
levels only (e.g., if –10 V is maximum, the typical value is a more negative voltage).
(2) Output short-circuit conditions must maintain the total power dissipation below absolute maximum ratings.
(3) Test conditions are those specified by TIA/EIA-232-F and as listed above.
V
CC
= 5 V, V
DD
=12V,V
SS
= –12 V, T
A
=25°C (see Figure 3)
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
t
PLH
Propagation delay time, low- to high-level output R
L
=3kΩ to 7 kΩ,C
L
= 15 pF 315 500 ns
t
PHL
Propagation delay time, high- to low-level output R
L
=3kΩ to 7 kΩ,C
L
=15pF 75 175 ns
C
L
=15pF 60 100 ns
t
TLH
Transition time, low- to high-level output R
L
=3kΩ to 7 kΩ
C
L
= 2500 pF
(1)
1.7 2.5 μs
C
L
=15pF 4075ns
t
THL
Transition time, high- to low-level output R
L
=3kΩ to 7 kΩ
C
L
= 2500 pF
(2)
1.5 2.5 μs
(1) Measured between –3-V and 3-V points of the output waveform (TIA/EIA-232-F conditions); all unused inputs are tied either high or low.
(2) Measured between 3-V and –3-V points of the output waveform (TIA/EIA-232-F conditions); all unused inputs are tied either high or low.
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