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ST75C185BN

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P16
1/16December 2002
■ MEETS STANDARD EIA-232-E
■ SINGLE CHIP WITH INTERFACE BETWEEN
UART AND SERIAL PORT CONNECTOR
■ LESS THAN 20mW QUIESCENT POWER
CONSUMPTION
■ WIDE DRIVER SUPPLY VOLTAGE: 7 TO
13.2V
■ DRIVER OUTPUT SLEW RATE LIMITED TO
30V/µs MAX
■ RECEIVER INTPUT HYSTERESIS: 1.1 TYP
■ PUSH-PULL RECEIVER OUTPUTS
■ ON CHIP RECEIVER 1µs NOISE FILTER
■ FUNCTIONALLY INTERCHANGEABLE WITH
STM ST75185
■ ESD PROTECTION: ±10KV HUMAN BODY
MODEL
DESCRIPTION
The ST75C185 is ow power BICMOS device
containing three independent drivers and five
receivers that is used to interface data terminal
equipment (DTE) with data circuit-terminating
equipment (DCE). This device has been designed
to conform to Standards ANSI/EIA-232-E. The
drivers have a controlled output slew rate that is
limited to a maximum of 30V/µs and the receivers
have filters that reject input noise pulses that are
shorter than 1µs. Both these features eliminate
the need of external components.
The ST75C185 hasn’t a power sequence fault
condition. It has been designed using low-power
techniques in a BICMOS technology.
In most application the receivers contained in this
device will interface to single inputs peripheral
devices such as ACEs, UARTs or
microprocessors. By using sampling, such
peripheral devices are usually insensitive to the
transition times of the input signals. If this is not
the case, or for other uses, it is recommended that
the ST75C185 receiver outputs be buffered by
single gates of the HCMOS, ALS or 74F logic
families.
ORDERING CODES
Type
Temperature
Range
Package Comments
ST75C185CN 0 to 70 °C DIP20 20 parts per tube / 50 tubes per box
ST75C185CD 0 to 70 °C SO-20 (Tube) 40 parts per tube / 25 tubes per box
ST75C185CDR 0 to 70 °C SO-20 (Tape & Reel) 1000 parts per reel
ST75C185CTR 0 to 70 °C TSSOP20 (Tape & Reel) 2500 parts per reel
ST75C185BN -40 to 85 °C DIP20 20 parts per tube / 50 tubes per box
ST75C185BD -40 to 85 °C SO-20 (Tube) 40 parts per tube / 25 tubes per box
ST75C185BDR -40 to 85 °C SO-20 (Tape & Reel) 1000 parts per reel
ST75C185BTR -40 to 85 °C TSSOP-20 (Tape & Reel) 2500 parts per reel
ST75C185
LOW POWER
MULTIPLE RS-232 DRIVERS AND RECEIVERS
DIP SOP
TSSOP
Obsolete Product(s) - Obsolete Product(s)
Obsolete Product(s) - Obsolete Product(s)
ST75C185
2/16
PIN CONNECTION IEC LOGIC SYMBOL AND LOGIC DIAGRAM
PIN DESCRIPTION
PlN N° SYMBOL NAME AND FUNCTION
1V
DD
Supply Voltage (+12V)
2 RA1 First Receiver Input
3 RA2 Second Receiver Input
4 RA3 Third Receiver Input
5 DY1 First Driver Output
6 DY2 Second Driver Output
7 RA4 Fourth Receiver Input
8 DY3 Third Driver Output
9 RA5 Fifth Receiver Input
10
V
SS
Supply Voltage (-12V)
11 GND Ground
12 RY5 Fifth Receiver Ouput
13 DA3 Third Driver Intput
14 RY4 Fourth Receiver Ouput
15 DA2 Second Driver Input
16 DA1 First Driver Input
17 RY3 Third Receiver Ouput
18 RY2 Second Receiver Output
19 RY1 First Receiver Output
20 V
CC
Supply Voltage (+5V)
Obsolete Product(s) - Obsolete Product(s)
ST75C185
3/16
ABSOLUTE MAXIMUM RATINGS OVER OPERATING FREE-AIR TEMPERATURE RANGE
Absolute Maximum Ratings are those values beyond which damage to the device may occur. Functional operation under these condition is
not implied.
NOTE 1: All voltages are with respect to the network ground terminal.
RECOMMENDED OPERATING CONDITIONS
NOTE 2: The algebraic conversion, where the more positive (less negative) limits designed as maximum, is used in this datasheet for logic
levels only, e.g.if-10V is a maximum, the typical value is a more negative voltage.
SUPPLY CURRENTS
Symbol Parameter Value Unit
V
DD
Supply Voltage (Note 1)
15 V
V
SS
Supply Voltage (Note 1)
-15 V
V
CC
Supply Voltage (Note 1)
7V
V
I
Input Voltage Range (DRIVER) -0.3 to (V
CC
+ 0.3)
V
V
I
Input Voltage Range (RECEIVER)
-30 to 30 V
V
O
Output Voltage Range (DRIVER) (V
SS
-6)to(V
DD
+6)
V
V
O
Output Voltage Range (RECEIVER) -0.3 to (V
CC
+ 0.3)
V
I
O
Receiver Low Level Output Current
20 mA
T
A
Operating Free-Air Tempereature Range
-40 to 85 °C
T
stg
Storage Temperature Range
-65 to + 150 °C
T
L
Lead Temperature 1.6mm from case for 10 sec
260 °C
Symbol Parameter Min TYP Max Unit
V
DD
Supply Voltage
7 12 13.2 V
V
SS
Supply Voltage
-7 -12 -13.2 V
V
CC
Supply Voltage
4.5 5 5.5 V
V
I
Input Voltage (Note 2) DRIVER
0
V
CC
V
RECEIVER -25 25
I
OH
High Level Output Current RECEIVER
-1 mA
I
OL
Low Level Output Current RECEIVER
3.2 mA
T
A
Operating Free-Air Tempereature Range
-40 25 85 °C
Symbol Parameter Test Conditions
Value
Unit
Min. Typ. Max.
I
DD
Supply Current from V
DD
No load. All inputs at 2 or 0.8V 115 500 µA
I
SS
Supply Current from V
SS
No load. All inputs at 2 or 0.8V -115 -500 µA
I
CC
Supply Current from V
CC
No load. All inputs at 2 or 5V 950 1500 µA
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P16

ST75C185BN

Mfr. #:
Buy ST75C185BN
Manufacturer:
STMicroelectronics
Description:
RS-232 Interface IC Lo Power 3Drvr/5Rcvr
Lifecycle:
New from this manufacturer.
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