ST207EB
ST207EC
± 15 kV ESD protected 5 V RS-232 transceiver
Features
■
■
■
■
■
ESD protection for RS-232 i/o pins: ±15 kV
human body model
230kbps data rate
Guaranteed slew rate 3 V/ms (min.)
Operates from a single 5 V power supply
Packaged in 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 ±15 KV
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 120 Kbps, when loaded in accordance with
the EIA/TIA-232E specification.
The ST207E operates with four 0.1 µF capacitors.
It came in 24-pin SSOP and TSSOP packages.
SSOP
TSSOP
Table 1.
Device summary
Temperature
range
0 to 70 °C
-40 to 85 °C
0 to 70 °C
-40 to 85 °C
Package
SSOP-24 (Tape & Reel)
SSOP-24 (Tape & Reel)
TSSOP24 (Tape & Reel)
TSSOP24 (Tape & Reel)
Packaging
1350 parts per reel
1350 parts per reel
2500 parts per reel
2500 parts per reel
Order codes
ST207ECPR
ST207EBPR
ST207ECTR
ST207EBTR
August 2007
Rev. 15
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www.st.com
15
ST207EB - ST207EC
Contents
1
2
3
4
5
6
Pin configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Typical application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
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ST207EB - ST207EC
Pin configuration
1
Figure 1.
Pin configuration
Pin connections (top view)
Table 2.
Pin N°
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
Pin description
Symbol
T3
OUT
T1
OUT
T2
OUT
R1
IN
R1
OUT
T2
IN
T1
IN
GND
V
CC
C
1+
V
+
C
1-
C
2+
C
2-
V
-
R3
IN
R3
OUT
RS-232 driver output
RS-232 driver output
RS-232 driver output
RS-232 receiver input
TTL/CMOS receiver output
TTL/CMOS driver input internal pull-up to V
CC
TTL/CMOS driver input internal pull-up to V
CC
Ground
4.75V to 5.25V supply voltage
Terminal for positive charge-pump capacitor
2V
CC
generated by the charge-pump
Terminal for negative charge-pump capacitor
Terminal for positive charge-pump capacitor
Terminal for negative charge-pump capacitor
-2V
CC
generated by the charge-pump
RS-232 receiver input
TTL/CMOS receiver output
Note
3/15
Pin configuration
Table 2.
Pin N°
18
19
20
21
22
23
24
ST207EB - ST207EC
Pin description
Symbol
T3
IN
T4
IN
T5
OUT
T5
IN
R2
OUT
R2
IN
T4
OUT
Note
TTL/CMOS driver input internal pull-up to V
CC
TTL/CMOS driver input internal pull-up to V
CC
RS-232 driver output
TTL/CMOS driver input internal pull-up to V
CC
TTL/CMOS receiver output
RS-232 receiver input
RS-232 driver output
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ST207EB - ST207EC
Maximum ratings
2
Table 3.
Symbol
V
CC
V+
V-
T
IN
R
IN
T
OUT
R
OUT
T
SHORT
T
STG
Maximum ratings
Absolute maximum ratings
Parameter
Supply voltage
Extra positive voltage
Extra negative voltage
Transmitter input voltage range
Receiver input voltage range
Transmitter output voltage range
Receiver output voltage range
Short circuit duration on t
OUT
Storage temperature range
Value
-0.3 to 6
(V
CC
- 0.3) to 14
-14 to 0.3
-0.3 to (V
CC
+ 0.3)
±
30
(V
-
- 0.3) to (V
+
+ 0.3)
-0.3 to (V
CC
+ 0.3)
Continuous
-65 to 150
°C
Unit
V
V
V
V
V
V
V
Note:
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.
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