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September 2003
s
ESD PROTECTION FOR RS-232 I/O PINS:
15 KV HUMAN BODY MODEL
s
230kbps DATE RATE
s
GUARANTEED SLEW RATE 3V/
s (Min)
s
OPERATES FROM A SINGLE 5V POWER
SUPPLY
s
PACKAGED IN SO-24, SSO-24 AND
TSSOP24
DESCRIPTION
The ST207E is a 5 driver and 3 receiver devices
designed for RS-232 and V.28 communications in
harsh environments. Each transmitter output and
receiver
input
is
protected
against
15KV
electrostatic discharge (ESD) shocks. The drivers
and receivers of the ST207E meet all EIA/
TIA-232E and CCITT V.28 specifications at data
rates up to 120Kbps, when loaded in accordance
with the EIA/TIA-232E specification.
The ST207E operates with four 0.1
F capacitors.
It came in 24-pin SO and TSSOP packages.
ORDERING CODES
Type
Temperature
Range
Package
Comments
ST207ECD
0 to 70 C
SO-24 (Tube)
33parts per tube / 25tube per box
ST207EBD
-40 to 85 C
SO-24 (Tube)
33parts per tube / 25tube per box
ST207EAD
-40 to 125 C
SO-24 (Tube)
33parts per tube / 25tube per box
ST207ECDR
0 to 70 C
SO-24 (Tape & Reel)
1000 parts per reel
ST207EBDR
-40 to 85 C
SO-24 (Tape & Reel)
1000 parts per reel
ST207EADR
-40 to 125 C
SO-24 (Tape & Reel)
1000 parts per reel
ST207ECPR
0 to 70 C
SSOP-24 (Tape & Reel)
1350 parts per reel
ST207EBDR
-40 to 85 C
SSOP-24 (Tape & Reel)
1350 parts per reel
ST207EAPR
-40 to 125 C
SSOP-24 (Tape & Reel)
1350 parts per reel
ST207ECTR
0 to 70 C
TSSOP24 (Tape & Reel)
2500 parts per reel
ST207EBTR
-40 to 85 C
TSSOP24 (Tape & Reel)
2500 parts per reel
ST207EATR
-40 to 125 C
TSSOP24 (Tape & Reel)
2500 parts per reel
ST207E
15KV ESD PROTECTED
5V RS-232 TRANSCEIVER
SSOP
SOP
TSSOP
ST207E
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PIN CONFIGURATION
PIN DESCRIPTION
PlN N
SYMBOL
NAME AND FUNCTION
1
T3
OUT
RS-232 Driver Output
2
T1
OUT
RS-232 Driver Output
3
T2
OUT
RS-232 Driver Output
4
R1
IN
RS-232 Receiver Input
5
R1
OUT
TTL/CMOS Receiver Output
6
T2
IN
TTL/CMOS Driver Input Internal Pull-up to V
CC
7
T1
IN
TTL/CMOS Driver Input Internal Pull-up to V
CC
8
GND
Ground
9
V
CC
4.75V to 5.25V Supply Voltage
10
C
1+
Terminal For Positive Charge-pump Capacitor
11
V
+
2V
CC
Generated by The Charge-pump
12
C
1-
Terminal For Negative Charge-pump Capacitor
13
C
2+
Terminal For Positive Charge-pump Capacitor
14
C
2-
Terminal For Negative Charge-pump Capacitor
15
V
-
-2V
CC
Generated by The Charge-pump
16
R3
IN
RS-232 Receiver Input
17
R3
OUT
TTL/CMOS Receiver Output
18
T3
IN
TTL/CMOS Driver Input Internal Pull-up to V
CC
19
T4
IN
TTL/CMOS Driver Input Internal Pull-up to V
CC
20
T5
OUT
RS-232 Driver Output
21
T5
IN
TTL/CMOS Driver Input Internal Pull-up to V
CC
22
R2
OUT
TTL/CMOS Receiver Output
23
R2
IN
RS-232 Receiver Input
24
T4
OUT
RS-232 Driver Output
ST207E
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ABSOLUTE MAXIMUM RATINGS
Absolute Maximum Ratings are those values beyond which damage to the device may occur. Functional operation under these condition is
not implied. V+ and V- can have a maximum magnitude of +7V, but their absolute addition can not exceed 13 V.
ESD PERFORMANCE: TRANSMITTER OUTPUTS, RECEIVER INPUTS
ELECTRICAL CHARACTERISTICS (C
1
- C
4
= 0.1
F, V
CC
= 5V
5%, T
A
= MIN to MAX, unless
otherwise specified. Typical values are referred to T
A
= 25C)
RECEIVER ELECTRICAL CHARACTERISTICS (C
1
- C
4
= 0.1
F, V
CC
= 5V
5%, T
A
= MIN to MAX,
unless otherwise specified. Typical values are referred to T
A
= 25C)
TRANSMITTER ELECTRICAL CHARACTERISTICS (C
1
- C
4
= 0.1
F, V
CC
= 5V
5%, T
A
= MIN to MAX,
unless otherwise specified. Typical values are referred to T
A
= 25C)
Symbol
Parameter
Value
Unit
V
CC
Supply Voltage
-0.3 to 6
V
V+
Extra Positive Voltage
(V
CC
- 0.3) to 14
V
V-
Extra Negative Voltage
-14 to 0.3
V
T
IN
Transmitter Input Voltage Range
-0.3 to (V
CC
+ 0.3)
V
R
IN
Receiver Input Voltage Range
30
V
T
OUT
Transmitter Output Voltage Range
(V- - 0.3) to (V+ + 0.3)
V
R
OUT
Receiver Output Voltage Range
-0.3 to (V
CC
+ 0.3)
V
T
SHORT
Short Circuit Duration on T
OUT
Continuous
T
stg
Storage Temperature Range
-65 to 150
C
Symbol
Parameter
Test Conditions
Min.
Typ.
Max.
Unit
ESD
ESD Protection Voltage
Human Body Model
15
KV
ESD
ESD Protection Voltage
IEC-1000-4-2 Contact Discharge
8
KV
Symbol
Parameter
Test Conditions
Min.
Typ.
Max.
Unit
I
SUPPLY
V
CC
Power Supply Current
No Load
T
A
= 25C
2
5
mA
Symbol
Parameter
Test Conditions
Min.
Typ.
Max.
Unit
V
RIN
Receiver Input Voltage
Operating Range
-30
30
V
V
RIL
Input Threshold Low
T
A
= 25C
V
CC
= 5V
0.8
1.2
V
V
RIH
Input Threshold High
T
A
= 25C
V
CC
= 5V
1.7
2.4
V
V
RIHYS
Input Hysteresys
V
CC
= 5V, no hysteresis in shutdown
0.2
0.5
1
V
R
RIN
Input Resistance
T
A
= 25C
V
CC
= 5V
3
5
7
K
V
OL
Output Voltage Low
0.4
V
V
OH
Output Voltage High
I
OUT
= -1mA
3.5
V
CC
-0.4
V
Symbol
Parameter
Test Conditions
Min.
Typ.
Max.
Unit
V
TOUT
Output Voltage Swing
All Driver loaded with 3K
to GND
5
8.5
V
R
OUT
Transmitter Output
Resistance
V
CC
= V+ = V- = 0V
V
OUT
=
2V
300
I
SC
Output Short Circuit Current
18
60
mA
I
IL
Input Pull-Up Current
T
IN
= 0V
15
200
A
V
TIL
Input Logic Threshold Low
0.8
V
V
TIH
Input Logic Threshold High
2
V
ST207E
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TIMING CHARACTERISTICS (C
1
- C
4
= 0.1
F, V
CC
= 5V
5%, T
A
= MIN to MAX, unless otherwise
specified. Typical values are referred to T
A
= 25C)
Symbol
Parameter
Test Conditions
Min.
Typ.
Max.
Unit
D
R
Maximum Data Rate
R
L
= 3K
to 7K
C
L
= 50pF to 1000pF
one transmitter switching
150
240
Kbps
R
L
= 3K
to 7K
C
L
= 50pF to 150pF
one transmitter switching
230
300
Kbps
t
PHLR
t
PLHR
Receiver Propagation Delay All drivers loaded with 3K
to GND
0.2
10
s
t
PHLT
t
PLHT
Transmitter Propagation
Delay
R
L
= 3K
C
L
= 2500pF
All transmitter loaded
2
3
s
SR
Transition-Region Slew
Rate
T
A
= 25C R
L
= 3 to 7K
V
CC
= 5V
C
L
= 50pF to 1000pF
measured from +3V to -3V or -3V to +3V
3
7
30
V/
s
ST207E
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APPLICATION CIRCUITS
CAPACITANCE VALUE (
F)
C1
C2.
C3
C4
C5
0.1
0.1
0.1
0.1
0.1
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