MAXIM MAX3243CPWR

MAX3243
3-V TO 5.5-V MULTICHANNEL RS-232 LINE DRIVER/RECEIVER
WITH ±15-kV ESD (HBM) PROTECTION
SLLS350E – APRIL 1999 – REVISED OCTOBER 2000
D
D
D
D
D
D
D
D
D
D
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D
D
D
DB, DW, OR PW PACKAGE
(TOP VIEW)
Single-Chip and Single-Supply Interface for
IBM PC/AT Serial Port
Meets or Exceeds the Requirements of
TIA/EIA-232-F and ITU v.28 Standards
Operates With 3-V to 5.5-V VCC Supply
Always-Active Noninverting Receiver
Output (ROUT2B)
Operates up to 250 kbit/s
Designed to Transmit at a Data Rate of
250 kbit/s
Low Standby Current . . . 1 µA Typical
External Capacitors . . . 4 × 0.1 µF
Accepts 5-V Logic Input With 3.3-V Supply
Designed to Be Interchangeable With
Maxim MAX3243
Serial-Mouse Driveability
RS-232 Bus-Pin ESD Protection Exceeds
±15-kV Using Human-Body Model (HBM)
Auto-Powerdown Feature to Disable Driver
Outputs When No Valid RS-232 Signal Is
Sensed
Applications
– Battery-Powered Systems, PDAs,
Notebooks, Laptops, Palmtop PCs, and
Hand-Held Equipment
Package Options Include Plastic
Small-Outline (DW), Shrink Small-Outline
(DB), and Thin Shrink Small-Outline (PW)
Packages
C2+
C2–
V–
RIN1
RIN2
RIN3
RIN4
RIN5
DOUT1
DOUT2
DOUT3
DIN3
DIN2
DIN1
1
28
2
27
3
26
4
25
5
24
6
23
7
22
8
21
9
20
10
19
11
18
12
17
13
16
14
15
C1+
V+
VCC
GND
C1–
FORCEON
FORCEOFF
INVALID
ROUT2B
ROUT1
ROUT2
ROUT3
ROUT4
ROUT5
description
The MAX3243 device consists of three line drivers, five line receivers, and a dual charge-pump circuit with
±15-kV ESD (HBM) protection pin to pin (serial-port connection pins, including GND). The device meets the
requirements of TIA/EIA-232-F and provides the electrical interface between an asynchronous communication
controller and the serial-port connector. This combination of drivers and receivers matches that needed for the
typical serial port used in an IBM PC/AT, or compatible. The charge pump and four small external capacitors
allow operation from a single 3-V to 5.5-V supply. In addition, the device includes an always-active noninverting
output (ROUT2B), which allows applications using the ring indicator to transmit data while the device is powered
down. The device operates at data signaling rates up to 250 kbit/s and a maximum of 30-V/µs driver output slew
rate.
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
AT, IBM, and PC are trademarks of International Business Machines Corporation.
Copyright  2000, Texas Instruments Incorporated
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
1
MAX3243
3-V TO 5.5-V MULTICHANNEL RS-232 LINE DRIVER/RECEIVER
WITH ±15-kV ESD (HBM) PROTECTION
SLLS350E – APRIL 1999 – REVISED OCTOBER 2000
description (continued)
Flexible control options for power management are available when the serial port is inactive. The
auto-powerdown feature functions when FORCEON is low and FORCEOFF is high. During this mode of
operation, if the device does not sense a valid RS-232 signal, the driver outputs are disabled. If FORCEOFF
is set low, both drivers and receivers (except ROUT2B) are shut off, and the supply current is reduced to 1 µA.
Disconnecting the serial port or turning off the peripheral drivers causes the auto-powerdown condition to occur.
Auto-powerdown can be disabled when FORCEON and FORCEOFF are high, and should be done when driving
a serial mouse. With auto-powerdown enabled, the device is activated automatically when a valid signal is
applied to any receiver input. The INVALID output is used to notify the user if an RS-232 signal is present at any
receiver input. INVALID is high (valid data) if any receiver input voltage is greater than 2.7 V or less than –2.7 V
or has been between –0.3 V and 0.3 V for less than 30 µs. INVALID is low (invalid data) if all receiver input
voltages are between –0.3 V and 0.3 V for more than 30 µs. Refer to Figure 5 for receiver input levels.
The MAX3243C is characterized for operation from 0°C to 70°C. The MAX3243I is characterized for operation
from –40°C to 85°C.
AVAILABLE OPTIONS
PACKAGED DEVICES
TA
SHRINK
SMALL OUTLINE
(DB)
SMALL OUTLINE
(DW)
THIN SHRINK
SMALL OUTLINE
(PW)
0°C to 70°C
MAX3243CDBR
MAX3243CDW
MAX3243CPWR
–40°C to 85°C
MAX3243IDBR
MAX3243IDW
MAX3243IPWR
The DB and PW packages are only available taped and reeled. The DW package is also
available taped and reeled. Add the suffix R to device type (e.g., MAX3243CDWR).
Function Tables
EACH DRIVER
INPUTS
OUTPUT
DOUT
DRIVER STATUS
X
Z
Powered off
Normal operation with
auto-powerdown disabled
DIN
FORCEON
FORCEOFF
VALID RIN
RS-232 LEVEL
X
X
L
L
H
H
X
H
H
H
H
X
L
L
L
H
Yes
H
H
L
H
Yes
L
L
L
H
No
Z
H
L
H
No
Z
H = high level, L = low level, X = irrelevant, Z = high impedance
2
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
Normal operation with
auto-powerdown enabled
Powered off by
y
auto-powerdown feature
MAX3243
3-V TO 5.5-V MULTICHANNEL RS-232 LINE DRIVER/RECEIVER
WITH ±15-kV ESD (HBM) PROTECTION
SLLS350E – APRIL 1999 – REVISED OCTOBER 2000
EACH RECEIVER
INPUTS
RIN2
RIN1,
RIN3–RIN5
L
H
OUTPUTS
FORCEOFF
VALID RIN
RS-232 LEVEL
X
L
X
L
L
L
L
H
H
L
ROUT2B
ROUT
X
L
Z
X
H
Z
H
Yes
L
H
H
Yes
L
L
H
Yes
H
H
H
H
H
Yes
H
L
Open
Open
H
No
L
H
RECEIVER STATUS
Powered off while
ROUT2B is active
Normal o
operation
eration with
auto-powerdown
disabled/enabled
di
bl d/
bl d
H = high level, L = low level, X = irrelevant, Z = high impedance (off), Open = input disconnected or connected
driver off
logic diagram (positive logic)
DIN1
DIN2
DIN3
FORCEOFF
FORCEON
ROUT1
ROUT2B
ROUT2
ROUT3
ROUT4
ROUT5
14
9
13
10
12
11
DOUT1
DOUT2
DOUT3
22
23
Auto-powerdown
19
21
4
INVALID
RIN1
20
18
5
17
6
16
7
15
8
RIN2
RIN3
RIN4
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
RIN5
3
MAX3243
3-V TO 5.5-V MULTICHANNEL RS-232 LINE DRIVER/RECEIVER
WITH ±15-kV ESD (HBM) PROTECTION
SLLS350E – APRIL 1999 – REVISED OCTOBER 2000
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)†
Supply voltage range, VCC (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.3 V to 6 V
Positive output supply voltage range, V+ (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.3 V to 7 V
Negative output supply voltage range, V– (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.3 V to –7 V
Supply voltage difference, V+ – V– (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 V
Input voltage range, VI: Driver (FORCEOFF, FORCEON) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.3 V to 6 V
Receiver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –25 V to 25 V
Output voltage range, VO: Driver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –13.2 V to 13.2 V
Receiver (INVALID) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.3 V to VCC + 0.3 V
Package thermal impedance, θJA (see Note 2): DB package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62°C/W
DW package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46°C/W
PW package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62°C/W
Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 260°C
Storage temperature range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –65°C to 150°C
† Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, and
functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not
implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
NOTES: 1. All voltages are with respect to network GND.
2. The package thermal impedance is calculated in accordance with JESD 51-7.
recommended operating conditions (see Note 3 and Figure 6)
VCC = 3.3 V
VCC = 5 V
Supply voltage
VIH
Driver and control high
high-level
level input voltage
DIN FORCEOFF
DIN,
FORCEOFF, FORCEON
VIL
VI
Driver and control low-level input voltage
DIN, FORCEOFF, FORCEON
Driver and control input voltage
DIN, FORCEOFF, FORCEON
VI
Receiver input voltage
TA
VCC = 3.3 V
VCC = 5 V
MAX3243C
Operating free
free-air
air temperature
MAX3243I
MIN
NOM
MAX
3
3.3
3.6
4.5
5
5.5
2
UNIT
V
V
2.4
0.8
V
0
5.5
V
–25
25
V
0
70
–40
85
°C
NOTE 3: Test conditions are C1–C4 = 0.1 µF at VCC = 3.3 V ± 0.3 V; C1 = 0.047 µF, C2–C4 = 0.33 µF at VCC = 5 V ± 0.5 V.
electrical characteristics over recommended ranges of supply voltage and operating free-air
temperature (unless otherwise noted) (see Note 3 and Figure 6)
PARAMETER
II
ICC
Input leakage current
Su ly current
Supply
(TA = 25°C)
TEST CONDITIONS
FORCEOFF, FORCEON
MIN
TYP‡
MAX
±0.01
±1
µA
0.3
1
mA
Auto-powerdown disabled
No load,
FORCEOFF and FORCEON at VCC
Powered off
No load, FORCEOFF at GND
1
10
Auto-powerdown enabled
No load, FORCEOFF at VCC,
FORCEON at GND,
All RIN are open or grounded
All DIN are grounded
1
10
‡ All typical values are at VCC = 3.3 V or VCC = 5 V, and TA = 25°C.
NOTE 3. Test conditions are C1–C4 = 0.1 µF at VCC = 3.3 V ± 0.3 V; C1 = 0.047 µF, C2–C4 = 0.33 µF at VCC = 5 V ± 0.5 V.
4
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
UNIT
µA
MAX3243
3-V TO 5.5-V MULTICHANNEL RS-232 LINE DRIVER/RECEIVER
WITH ±15-kV ESD (HBM) PROTECTION
SLLS350E – APRIL 1999 – REVISED OCTOBER 2000
DRIVER SECTION
electrical characteristics over recommended ranges of supply voltage and operating free-air
temperature (unless otherwise noted) (see Note 3 and Figure 6)
MIN
TYP†
High-level output voltage
All DOUT at RL = 3 kΩ to GND
5
5.4
V
Low-level output voltage
All DOUT at RL = 3 kΩ to GND
–5
–5.4
V
Output voltage
(mouse driveability)
DIN1 = DIN2 = GND, DIN3 = VCC, 3-kΩ to GND at DOUT3,
DOUT1 = DOUT2 = 2.5 mA
±5
High-level input current
VI = VCC
VI at GND
PARAMETER
VOH
VOL
VO
IIH
IIL
IOS
Low-level input current
Short circ it output
o tp t current
c rrent‡
Short-circuit
TEST CONDITIONS
VCC = 3.6 V,
VCC = 5.5 V,
VO = 0 V
VO = 0 V
MAX
UNIT
V
±0.01
±1
µA
±0.01
±1
µA
±35
±60
mA
Output resistance
VCC, V+, and V– = 0 V, VO = ±2 V
300
10M
Ω
Ioff
Output leakage current
FORCEOFF = GND,
VO = ±12 V,
VCC = 0 to 5.5 V
±25
µA
† All typical values are at VCC = 3.3 V or VCC = 5 V, and TA = 25°C.
‡ Short-circuit durations should be controlled to prevent exceeding the device absolute power dissipation ratings, and not more than one output
should be shorted at a time.
NOTE 3. Test conditions are C1–C4 = 0.1 µF at VCC = 3.3 V ± 0.3 V; C1 = 0.047 µF, C2–C4 = 0.33 µF at VCC = 5 V ± 0.5 V.
ro
switching characteristics over recommended ranges of supply voltage and operating free-air
temperature (unless otherwise noted) (see Note 3 and Figure 6)
PARAMETER
TEST CONDITIONS
Maximum data rate
CL = 1000 pF,
One DOUT switching,
RL = 3 kΩ,
See Figure 1
tsk(p)
Pulse skew§
CL = 150 pF to 2500 pF
RL = 3 kΩ to 7 kΩ,
See Figure 2
SR(tr)
Slew rate, transition region
g
(see Figure 1)
VCC = 3.3 V,
RL = 3 kΩ to 7 kΩ
MIN
TYP†
150
250
kbit/s
100
ns
MAX
CL = 150 pF to 1000 pF
6
30
CL = 150 pF to 2500 pF
4
30
UNIT
V/µs
† All typical values are at VCC = 3.3 V or VCC = 5 V, and TA = 25°C.
§ Pulse skew is defined as |tPLH – tPHL| of each channel of the same device.
NOTE 3. Test conditions are C1–C4 = 0.1 µF at VCC = 3.3 V ± 0.3 V; C1 = 0.047 µF, C2–C4 = 0.33 µF at VCC = 5 V ± 0.5 V.
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
5
MAX3243
3-V TO 5.5-V MULTICHANNEL RS-232 LINE DRIVER/RECEIVER
WITH ±15-kV ESD (HBM) PROTECTION
SLLS350E – APRIL 1999 – REVISED OCTOBER 2000
RECEIVER SECTION
electrical characteristics over recommended ranges of supply voltage and operating free-air
temperature (unless otherwise noted) (see Note 3 and Figure 6)
PARAMETER
VOH
VOL
MIN
TYP†
VCC – 0.6 V
VCC – 0.1 V
TEST CONDITIONS
High-level output voltage
IOH = –1 mA
IOL = 1.6 mA
Low-level output voltage
VIT
IT+
Positive going input threshold voltage
Positive-going
VCC = 3.3 V
VCC = 5 V
VIT
IT–
Negative going input threshold voltage
Negative-going
VCC = 3.3 V
VCC = 5 V
Vhys
Ioff
Input hysteresis (VIT+ – VIT–)
MAX
V
0.4
1.6
2.4
1.9
2.4
0.6
1.1
0.8
1.4
FORCEOFF = 0 V
±0.05
ri
Input resistance
VI = ±3 V to ±25 V
3
5
† All typical values are at VCC = 3.3 V or VCC = 5 V, and TA = 25°C.
NOTE 3. Test conditions are C1–C4 = 0.1 µF at VCC = 3.3 V ± 0.3 V; C1 = 0.047 µF, C2–C4 = 0.33 µF at VCC = 5 V ± 0.5 V.
V
V
V
0.5
Output leakage current (except ROUT2B)
UNIT
V
±10
µA
7
kΩ
switching characteristics over recommended ranges of supply voltage and operating free-air
temperature (unless otherwise noted) (see Note 3)
PARAMETER
TEST CONDITIONS
tPLH
tPHL
Propagation delay time, low- to high-level output
ten
tdis
Output enable time
Propagation delay time, high- to low-level output
Output disable time
CL = 150 pF,
pF See Figure 3
CL = 150 pF,
pF RL = 3 kΩ,
kΩ See Figure 4
MIN
TYP†
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
UNIT
150
ns
150
ns
200
ns
200
ns
tsk(p)
Pulse skew‡
See Figure 3
50
† All typical values are at VCC = 3.3 V or VCC = 5 V, and TA = 25°C.
‡ Pulse skew is defined as |tPLH – tPHL| of each channel of the same device.
NOTE 3. Test conditions are C1–C4 = 0.1 µF at VCC = 3.3 V ± 0.3 V; C1 = 0.047 µF, C2–C4 = 0.33 µF at VCC = 5 V ± 0.5 V.
6
MAX
ns
MAX3243
3-V TO 5.5-V MULTICHANNEL RS-232 LINE DRIVER/RECEIVER
WITH ±15-kV ESD (HBM) PROTECTION
SLLS350E – APRIL 1999 – REVISED OCTOBER 2000
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
VT+(valid)
Receiver input threshold
for INVALID high-level output voltage
FORCEON = GND,
FORCEOFF = VCC
VT–(valid)
Receiver input threshold
for INVALID high-level output voltage
FORCEON = GND,
FORCEOFF = VCC
–2.7
VT(invalid)
Receiver input threshold
for INVALID low-level output voltage
FORCEON = GND,
FORCEOFF = VCC
–0.3
VOH
INVALID high-level output voltage
IOH = –1 mA, FORCEON = GND,
FORCEOFF = VCC
VOL
INVALID low-level output voltage
IOL = 1.6 mA, FORCEON = GND,
FORCEOFF = VCC
TYP†
MAX
UNIT
2.7
V
V
0.3
V
VCC – 0.6
V
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
tvalid
tinvalid
MIN
Propagation delay time, low- to high-level output
Propagation delay time, high- to low-level output
ten
Supply enable time
† All typical values are at VCC = 3.3 V or VCC = 5 V, and TA = 25°C.
TYP†
MAX
UNIT
1
µs
30
µs
100
µs
PARAMETER MEASUREMENT INFORMATION
3V
Generator
(see Note B)
Input
RS-232
Output
50 Ω
RL
0V
CL
(see Note A)
tTHL
3V
FORCEOFF
Output
SR(tr)
TEST CIRCUIT
+
6 V
t THL or t TLH
tTLH
3V
–3 V
3V
–3 V
VOH
VOL
VOLTAGE WAVEFORMS
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
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
7
MAX3243
3-V TO 5.5-V MULTICHANNEL RS-232 LINE DRIVER/RECEIVER
WITH ±15-kV ESD (HBM) PROTECTION
SLLS350E – APRIL 1999 – REVISED OCTOBER 2000
PARAMETER MEASUREMENT INFORMATION
3V
Generator
(see Note B)
RS-232
Output
50 Ω
Input
1.5 V
1.5 V
0V
CL
(see Note A)
RL
tPHL
tPLH
VOH
3V
FORCEOFF
50%
50%
Output
VOL
TEST CIRCUIT
VOLTAGE WAVEFORMS
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 2. Driver Pulse Skew
3 V or 0 V
FORCEON
3V
Input
1.5 V
1.5 V
–3 V
Output
Generator
(see Note B)
50 Ω
tPHL
CL
(see Note A)
3V
FORCEOFF
tPLH
VOH
50%
Output
50%
VOL
TEST CIRCUIT
VOLTAGE WAVEFORMS
NOTES: A. CL includes probe and jig capacitance.
B. The pulse generator has the following characteristics: ZO = 50 Ω, 50% duty cycle, tr ≤ 10 ns, tf ≤ 10 ns.
Figure 3. Receiver Propagation Delay Times
3V
Input
3 V or 0 V
FORCEON
VCC
S1
1.5 V
GND
–3 V
tPZH
(S1 at GND)
tPHZ
(S1 at GND)
RL
3 V or 0 V
1.5 V
VOH
Output
50%
Output
CL
(see Note A)
FORCEOFF
Generator
(see Note B)
50 Ω
0.3 V
tPZL
(S1 at VCC)
tPLZ
(S1 at VCC)
0.3 V
Output
50%
VOL
TEST CIRCUIT
NOTES: A.
B.
C.
D.
VOLTAGE WAVEFORMS
CL includes probe and jig capacitance.
The pulse generator has the following characteristics: ZO = 50 Ω, 50% duty cycle, tr ≤ 10 ns, tf ≤ 10 ns.
tPLZ and tPHZ are the same as tdis.
tPZL and tPZH are the same as ten.
Figure 4. Receiver Enable and Disable Times
8
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
MAX3243
3-V TO 5.5-V MULTICHANNEL RS-232 LINE DRIVER/RECEIVER
WITH ±15-kV ESD (HBM) PROTECTION
SLLS350E – APRIL 1999 – REVISED OCTOBER 2000
PARAMETER MEASUREMENT INFORMATION
2.7 V
2.7 V
0V
Receiver
Input
0V
–2.7 V
–2.7 V
ROUT
Generator
(see Note B)
3V
50 Ω
tinvalid
tvalid
50% VCC
50% VCC
–3 V
VCC
INVALID
Output
Autopowerdown
≈V+
V+
0.3 V
VCC
0V
0.3 V
Supply
Voltages
FORCEOFF
FORCEON
ten
INVALID
CL = 30 pF
(see Note A)
0V
DIN
DOUT
≈V–
V–
TEST CIRCUIT
VOLTAGE WAVEFORMS
Valid RS-232 Level, INVALID High
ÎÎÎÎÎÎÎÎÎÎÎÎ
ÎÎÎÎÎÎÎÎÎÎÎÎ
ÎÎÎÎÎÎÎÎÎÎÎÎ
ÎÎÎÎÎÎÎÎÎÎÎÎ
ÎÎÎÎÎÎÎÎÎÎÎÎ
2.7 V
Indeterminate
0.3 V
0V
If Signal Remains Within This Region
For More Than 30 µs, INVALID Is Low†
–0.3 V
Indeterminate
–2.7 V
Valid RS-232 Level, INVALID High
† Auto-powerdown disables drivers and reduces
supply current to 1 µA.
NOTES: A. CL includes probe and jig capacitance.
B. The pulse generator has the following characteristics: PRR = 5 kbit/s, ZO = 50 Ω, 50% duty cycle, tr ≤ 10 ns, tf ≤ 10 ns.
Figure 5. INVALID Propagation Delay Times and Supply Enabling Time
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
9
MAX3243
3-V TO 5.5-V MULTICHANNEL RS-232 LINE DRIVER/RECEIVER
WITH ±15-kV ESD (HBM) PROTECTION
SLLS350E – APRIL 1999 – REVISED OCTOBER 2000
APPLICATION INFORMATION
C1+
1
+
C2
–
2
3
V–
GND
C1–
RIN2
RIN3
RIN4
RIN5
DOUT1
RS-232 Outputs
VCC
+
RIN1
RS-232 Inputs
C2–
DOUT2
4
27
+
–
26
25
C3†
+ CBYPASS
– = 0.1 µF
+
–
C1
24
23
FORCEON
5
Autopowerdown
C4
–
V+
C2+
28
6
7
22
FORCEOFF
8
21
9
20
10
19
INVALID
ROUT2B
ROUT1
5 kΩ
DOUT3
11
18
ROUT2
5 kΩ
DIN3
12
Logic Outputs
17
ROUT3
5 kΩ
Logic Inputs
DIN2
13
16
ROUT4
5 kΩ
DIN1
14
15
ROUT5
5 kΩ
† C3 can be connected to VCC or GND.
NOTE A: Resistor values shown are nominal.
VCC vs CAPACITOR VALUES
VCC
C1
C2, C3, and C4
3.3 V ± 0.3 V
5 V ± 0.5 V
3 V to 5.5 V
0.1 µF
0.047 µF
0.1 µF
0.1 µF
0.33 µF
0.47 µF
Figure 6. Typical Operating Circuit and Capacitor Values
10
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