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Receiver Section Electrical Characteristics
(1)
Receiver Section Switching Characteristics
(1)
ESD Protection
TRS3221E
3-V TO 5.5-V SINGLE-CHANNEL RS-232 LINE DRIVER/RECEIVER
WITH ± 15-kV IEC ESD PROTECTION
SLLS792 – JUNE 2007
over recommended ranges of supply voltage and operating free-air temperature (unless otherwise noted) (see Figure 6 )
PARAMETER TEST CONDITIONS MIN TYP
(2)
MAX UNIT
V
OH
High-level output voltage I
OH
= –1 mA V
CC
– 0.6 V
CC
– 0.1 V
V
OL
Low-level output voltage I
OL
= 1.6 mA 0.4 V
V
CC
= 3.3 V 1.6 2.4
V
IT+
Positive-going input threshold voltage V
V
CC
= 5 V 1.9 2.4
V
CC
= 3.3 V 0.6 1.1
V
IT–
Negative-going input threshold voltage V
V
CC
= 5 V 0.8 1.4
V
hys
Input hysteresis (V
IT+
– V
IT–
) 0.5 V
I
off
Output leakage current EN = V
CC
± 0.05 ± 10 μ A
r
i
Input resistance V
I
= ± 3 V to ± 25 V 3 5 7 k Ω
(1) Test conditions are C1–C4 = 0.1 μ F at V
CC
= 3.3 V ± 0.3 V; C1 = 0.047 μ F, C2–C4 = 0.33 μ F at V
CC
= 5 V ± 0.5 V.
(2) All typical values are at V
CC
= 3.3 V or V
CC
= 5 V, and T
A
= 25 ° C.
over recommended ranges of supply voltage and operating free-air temperature (unless otherwise noted) (see Figure 6 )
PARAMETER TEST CONDITIONS TYP
(2)
UNIT
t
PLH
Propagation delay time, low- to high-level output C
L
= 150 pF, See Figure 3 150 ns
t
PHL
Propagation delay time, high- to low-level output C
L
= 150 pF, See Figure 3 150 ns
t
en
Output enable time C
L
= 150 pF, R
L
= 3 k Ω , See Figure 4 200 ns
t
dis
Output disable time C
L
= 150 pF, R
L
= 3 k Ω , See Figure 4 200 ns
t
sk(p)
Pulse skew
(3)
See Figure 3 50 ns
(1) Test conditions are C1–C4 = 0.1 μ F at V
CC
= 3.3 V ± 0.3 V; C1 = 0.047 μ F, C2–C4 = 0.33 μ F at V
CC
= 5 V ± 0.5 V.
(2) All typical values are at V
CC
= 3.3 V or V
CC
= 5 V, and T
A
= 25 ° C.
(3) Pulse skew is defined as |t
PLH
– t
PHL
| of each channel of the same device.
NAME TEST CONDITIONS TYP UNIT
HBM ± 15
R
IN
/D
OUT
IEC G1000-4-2 Contact Discharge ± 8 kV
IEC G1000-4-2 Air-Gap Discharge ± 15
5
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