TRS3318E_10 Datasheet, PDF (10/19 Pages) Texas Instruments – 2.5-V 460-kbps RS-232 TRANSCEIVER WITH ±15-kV ESD PROTECTION

TRS3318E
SLLS805A – APRIL 2007 – REVISED APRIL 2010
PARAMETER MEASUREMENT INFORMATION
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Generator
(see Note B)
50 Ω
R_L
3V
FORCEOFF
TEST CIRCUIT
RS-232
Output
C_L
(see Note A)
Input
Output
SR(tr)
+
6V
t_THL or t_TLH
3V
0V
t_THL
3V
−3 V
t_TLH
3V
−3 V
V_OH
V_OL
VOLTAGE WAVEFORMS
NOTES: A. C_L includes probe and jig capacitance.
B. The pulse generator has the following characteristics: PRR = 250 kbit/s, Z_O = 50 Ω, 50% duty cycle, t_r ≤ 10 ns, t_f ≤ 10 ns.
Figure 1. Driver Slew Rate
Generator
(see Note B)
50 Ω
R_L
3V
FORCEOFF
RS-232
Output
C_L
(see Note A)
Input
1.125 V
t_PHL
Output
50%
1.125 V
2.25 V
0V
t_PLH
50%
V_OH
V_OL
TEST CIRCUIT
VOLTAGE WAVEFORMS
NOTES: A. C_L includes probe and jig capacitance.
B. The pulse generator has the following characteristics: PRR = 250 kbit/s, Z_O = 50 Ω, 50% duty cycle, t_r ≤ 10 ns, t_f ≤ 10 ns.
Figure 2. Driver Pulse Skew
Generator
(see Note B)
50 Ω
Output
C_L
(see Note A)
Input
0V
t_PHL
Output
50%
0V
t_PLH
50%
3V
−3 V
V_OH
V_OL
TEST CIRCUIT
VOLTAGE WAVEFORMS
NOTES: A. C_L includes probe and jig capacitance.
B. The pulse generator has the following characteristics: Z_O = 50 Ω, 50% duty cycle, t_r ≤ 10 ns, t_f ≤ 10 ns.
Figure 3. Receiver Propagation Delay Times
10
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