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MAX3243CDB Datasheet(PDF) 7 Page - Texas Instruments

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Part # MAX3243CDB
Description  3-V TO 5.5-V MULTICHANNEL RS-232 LINE DRIVER/RECEIVER
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Manufacturer  TI [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI - Texas Instruments

MAX3243CDB Datasheet(HTML) 7 Page - Texas Instruments

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MAX3243
3-V TO 5.5-V MULTICHANNEL RS-232 LINE DRIVER/RECEIVER
SLLS350B – APRIL 1999 – REVISED JANUARY 2000
7
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
AUTO-POWERDOWN SECTION
electrical characteristics over recommended ranges of supply voltage and operating free-air
temperature (unless otherwise noted) (see Figure 5)
PARAMETER
TEST CONDITIONS
MIN
TYP†
MAX
UNIT
VT+(valid)
Receiver input threshold
for INVALID high-level output voltage
FORCEON = GND,
FORCEOFF = VCC
2.7
V
VT–(valid)
Receiver input threshold
for INVALID high-level output voltage
FORCEON = GND,
FORCEOFF = VCC
–2.7
V
VT(invalid)
Receiver input threshold
for INVALID low-level output voltage
FORCEON = GND,
FORCEOFF = VCC
–0.3
0.3
V
VOH
INVALID high-level output voltage
IOH = –1 mA, FORCEON = GND,
FORCEOFF = VCC
VCC – 0.6
V
VOL
INVALID low-level output voltage
IOL = 1.6 mA, FORCEON = GND,
FORCEOFF = VCC
0.4
V
† All typical values are at VCC = 3.3 V or VCC = 5 V, and TA = 25°C.
switching characteristics over recommended ranges of supply voltage and operating free-air
temperature (unless otherwise noted) (see Figure 5)
PARAMETER
MIN
TYP†
MAX
UNIT
tvalid
Propagation delay time, low- to high-level output
1
µs
tinvalid
Propagation delay time, high- to low-level output
30
µs
ten
Supply enable time
100
µs
† All typical values are at VCC = 3.3 V or VCC = 5 V, and TA = 25°C.
PARAMETER MEASUREMENT INFORMATION
50
TEST CIRCUIT
VOLTAGE WAVEFORMS
–3 V
–3 V
3 V
3 V
0 V
3 V
Output
Input
VOL
VOH
tTLH
Generator
(see Note B)
RL
3 V
FORCEOFF
RS-232
Output
tTHL
CL
(see Note A)
SR(tr)
+
6V
t
THL or tTLH
NOTES: A. CL includes probe and jig capacitance.
B. The pulse generator has the following characteristics: PRR = 250 kbit/s, ZO = 50 Ω, 50% duty cycle, tr ≤ 10 ns, tf ≤ 10 ns.
Figure 1. Driver Slew Rate


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