MAX208
5 V MULTICHANNEL RS 232 LINE DRIVER/RECEIVER
WITH ±15 kV ESD PROTECTION
SLLS596 - OCTOBER 2003
1
POST OFFICE BOX 655303
·
DALLAS, TEXAS 75265
D
ESD Protection for RS-232 I/O Pins
-
±
15 kV - Human-Body Model
D
Meets or Exceeds the Requirements of
TIA/EIA-232-F and ITU v.28 Standards
D
Operates at 5-V V
CC
Supply
D
Four Drivers and Four Receivers
D
Operates up to 120 kbit/s
D
External Capacitors . . . 4
×
0.1
µ
F
D
Designed to Be Interchangeable With
Maxim MAX208
D
Latch-Up Performance Exceeds 100 mA Per
JESD 78, Class II
D
Applications
- Battery-Powered Systems, PDAs,
Notebooks, Laptops, Palmtop PCs, and
Hand-Held Equipment
description/ordering information
The MAX208
device consists of four line drivers, four line receivers, and a dual charge-pump circuit with
±
15-kV HBM ESD 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. The charge pump and four small external capacitors allow operation
from a single 5-V supply. The devices operate at data signaling rates up to 120 kbit/s and a maximum of 30-V/
µ
s
driver output slew rate.
ORDERING INFORMATION
TA
PACKAGE
ORDERABLE
PART NUMBER
TOP-SIDE
MARKING
PDIP (NT)
Tube of 15
MAX208CNT
MAX208CNT
SOIC (DW)
Tube of 25
MAX208CDW
MAX208C
0
°
C to 70
°
C
SOIC (DW)
Reel of 2000
MAX208CDWR
MAX208C
0 C to 70 C
SSOP (DB)
Tube of 60
MAX208CDB
MA208C
SSOP (DB)
Reel of 2000
MAX208CDBR
MA208C
PDIP (NT)
Tube of 15
MAX208INT
MAX208INT
SOIC (DW)
Tube of 25
MAX208IDW
MAX208I
- 40
°
C to 85
°
C
SOIC (DW)
Reel of 2000
MAX208IDWR
MAX208I
- 40 C to 85 C
SSOP (DB)
Tube of 60
MAX208IDB
MB208I
SSOP (DB)
Reel of 2000
MAX208IDBR
MB208I
Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are
available at www.ti.com/sc/package.
Copyright
2003, Texas Instruments Incorporated
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.
DB, DW, OR NT PACKAGE
(TOP VIEW)
DOUT2
DOUT1
RIN2
ROUT2
DIN1
ROUT1
RIN1
GND
V
CC
C1+
V+
C1-
DOUT3
RIN3
ROUT3
DIN4
DOUT4
DIN3
DIN2
ROUT4
RIN4
V-
C2-
C2+
1
2
3
4
5
6
7
8
9
10
11
12
24
23
22
21
20
19
18
17
16
15
14
13
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.
MAX208
5 V MULTICHANNEL RS 232 LINE DRIVER/RECEIVER
WITH ±15 kV ESD PROTECTION
SLLS596 - OCTOBER 2003
2
POST OFFICE BOX 655303
·
DALLAS, TEXAS 75265
Function Tables
EACH DRIVER
INPUT
DIN
OUTPUT
DOUT
L
H
H
L
H = high level, L = low
level
EACH RECEIVER
INPUT
RIN
OUTPUT
ROUT
L
H
H
L
Open
H
H = high level, L = low
level, Open = input
disconnected or
connected driver off
logic diagram (positive logic)
RIN2
ROUT2
DIN1
DOUT1
RIN3
ROUT3
5
4
22
2
3
23
RIN1
ROUT1
6
7
DIN2
DOUT2
DIN3
DOUT3
18
19
1
24
DIN4
DOUT4
21
20
RS-232
Outputs
TTL/CMOS
Inputs
RS-232
Inputs
TTL/CMOS
Outputs
RIN4
ROUT4
17
16
MAX208
5 V MULTICHANNEL RS 232 LINE DRIVER/RECEIVER
WITH ±15 kV ESD PROTECTION
SLLS596 - OCTOBER 2003
3
POST OFFICE BOX 655303
·
DALLAS, TEXAS 75265
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)
Supply voltage range, V
CC
(see Note 1)
-0.3 V to 6 V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Positive charge pump voltage range, V+ (see Note 1)
V
CC
-0.3 V to 14 V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Negative charge pump voltage range, V- (see Note 1)
-14 V to 0.3 V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Supply voltage difference, V+
-
V- (see Note 1)
13 V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Input voltage range, V
I
: Drivers
-0.3 V to V+ + 0.3 V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Receivers
±
30 V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Output voltage range, V
O
: Drivers
V-
- 0.3 V to V+ + 0.3 V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Receivers
-0.3 V to V
CC
+ 0.3 V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Short-circuit duration: D
OUT
Continuous
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Package thermal impedance,
JA
(see Notes 2 and 3): DB package
63
°
C/W
. . . . . . . . . . . . . . . . . . . . . . . . . . .
(see Notes 2 and 3): DW package
46
°
C/W
. . . . . . . . . . . . . . . . . . . . . . . . . .
(see Notes 2 and 4): NT package
67
°
C/W
. . . . . . . . . . . . . . . . . . . . . . . . . . .
Operating virtual junction temperature, T
J
150
°
C
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Storage temperature range, T
stg
-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. Maximum power dissipation is a function of TJ(max),
JA, and TA. The maximum allowable power dissipation at any allowable
ambient temperature is PD = (TJ(max) - TA)/
JA. Operating at the absolute maximum TJ of 150
°
C can affect reliability.
3. The package thermal impedance is calculated in accordance with JESD 51-7.
4. The package thermal impedance is calculated in accordance with JESD 51-3.
recommended operating conditions (see Note 5 and Figure 4)
MIN
NOM
MAX
UNIT
Supply voltage
4.5
5
5.5
V
VIH
Driver high-level input voltage
DIN
2.4
V
VIL
Driver low-level input voltage
DIN
0.8
V
VI
Driver input voltage
DIN
0
5.5
V
VI
Receiver input voltage
-30
30
V
TA
Operating free-air temperature
MAX208C
0
70
°
C
TA
Operating free-air temperature
MAX208I
-40
85
°
C
NOTE 5: Test conditions are C1-C4 = 0.1
µ
F 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 5 and Figure 4)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
ICC
Supply current
No load,
VCC = 5 V,
TA = 25
°
C
11
20
mA
NOTE 5: Test conditions are C1-C4 = 0.1
µ
F at VCC = 5 V
±
0.5 V.
MAX208
5 V MULTICHANNEL RS 232 LINE DRIVER/RECEIVER
WITH ±15 kV ESD PROTECTION
SLLS596 - OCTOBER 2003
4
POST OFFICE BOX 655303
·
DALLAS, TEXAS 75265
DRIVER SECTION
electrical characteristics over recommended ranges of supply voltage and operating free-air
temperature (unless otherwise noted) (see Note 5 and Figure 4)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
VOH
High-level output voltage
DOUT at RL = 3 k
to GND,
DIN = GND
5
9
V
VOL
Low-level output voltage
DOUT at RL = 3 k
to GND,
DIN = VCC
-5
-9
V
IIH
High-level input current
VI = VCC
15
200
µ
A
IIL
Low-level input current
VI at 0 V
-15
-200
µ
A
IOS
Short-circuit output current
VCC = 5.5 V,
VO = 0 V
±
10
±
60
mA
ro
Output resistance
VCC, V+, and V- = 0 V,
VO =
±
2 V
300
W
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 5: Test conditions are C1-C4 = 0.1
µ
F at VCC = 5 V
±
0.5 V.
switching characteristics over recommended ranges of supply voltage and operating free-air
temperature (unless otherwise noted) (see Note 5 and Figure 4)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
Maximum data rate
CL = 50 to 1000 pF,
One DOUT switching,
RL = 3 k
to 7 k
,
See Figure 1
120
kbit/s
tPLH (D)
Propagation delay time,
low- to high-level output
CL = 2500 pF,
all drivers loaded,
RL = 3 k
,
See Figure 1
2
µ
s
tPHL (D)
Propagation delay time,
high- to low-level output
CL = 2500 pF,
all drivers loaded,
RL = 3 k
,
See Figure 1
2
µ
s
tsk(p)
Pulse skew§
CL = 150 pF to 2500 pF,
RL = 3 k
to 7 k
,
See Figure 2
300
ns
SR(tr)
Slew rate, transition region
(see Figure 1)
CL = 50 pF to 2500 pF,
VCC = 5 V
RL = 3 k
to 7 k
,
3
6
30
V/
µ
s
All typical values are at VCC = 5 V, and TA = 25
°
C.
§ Pulse skew is defined as |tPLH - tPHL| of each channel of the same device.
NOTE 5: Test conditions are C1-C4 = 0.1
µ
F at VCC = 5 V
±
0.5 V.
ESD protection
PIN
TEST CONDITIONS
TYP
UNIT
DOUT, RIN
Human Body Model
±
15
kV
MAX208
5 V MULTICHANNEL RS 232 LINE DRIVER/RECEIVER
WITH ±15 kV ESD PROTECTION
SLLS596 - OCTOBER 2003
5
POST OFFICE BOX 655303
·
DALLAS, TEXAS 75265
RECEIVER SECTION
electrical characteristics over recommended ranges of supply voltage and operating free-air
temperature (unless otherwise noted) (see Note 5 and Figure 4)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
VOH
High-level output voltage
IOH = -1 mA
3.5
V
VOL
Low-level output voltage
IOL = 1.6 mA
0.4
V
VIT+
Positive-going input threshold voltage
VCC = 5 V,
TA = 25
°
C
1.7
2.4
V
VIT-
Negative-going input threshold voltage
VCC = 5 V,
TA = 25
°
C
0.8
1.2
V
Vhys
Input hysteresis (VIT+ - VIT-)
VCC = 5 V
0.2
0.5
1
V
ri
Input resistance
VI =
±
3 V to
±
25 V,
VCC = 5 V,
TA = 25
°
C
3
5
7
k
W
NOTE 5: Test conditions are C1-C4 = 0.1
µ
F at VCC = 5 V
±
0.5 V.
switching characteristics over recommended ranges of supply voltage and operating free-air
temperature (unless otherwise noted) (see Note 5 and Figure 3)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
tPLH (R)
Propagation delay time, low- to high-level output
CL= 150 pF
0.5
10
µ
s
tPHL (R)
Propagation delay time, high- to low-level output
CL= 150 pF
0.5
10
µ
s
tsk(p)
Pulse skew
300
ns
All typical values are at VCC = 5 V, and TA = 25
°
C.
Pulse skew is defined as |tPLH - tPHL| of each channel of the same device.
NOTE 5: Test conditions are C1-C4 = 0.1
µ
F, at VCC = 5 V
±
0.5 V.
PARAMETER MEASUREMENT INFORMATION
50
TEST CIRCUIT
VOLTAGE WAVEFORMS
0 V
3 V
Output
Input
VOL
VOH
tPLH (D)
Generator
(see Note B)
RL
RS-232
Output
tPHL (D)
CL
(see Note A)
SR(tr)
+
6 V
t
PHL (D)
or t
PLH (D)
NOTES: A. CL includes probe and jig capacitance.
B. The pulse generator has the following characteristics: PRR = 120 kbit/s, ZO = 50
, 50% duty cycle, tr
10 ns, tf
10 ns.
1.5 V
1.5 V
3 V
-3 V
3 V
-3 V
Figure 1. Driver Slew Rate
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