Texas Instruments TL145406DW, TL145406DWR, TL145406N Datasheet
TL145406
TRIPLE RS-232 DRIVERS/RECEIVERS
SLLS185A – DECEMBER 1994 – REVISED MARCH 1995
D
Meets or Exceeds the Requirements of
ANSI EIA/TIA-232-E and ITU V.28
D
Designed to Support Data Rates Up to
120 kbits/s Over 3-m Cable
D
ESD Protection Exceeds 5 kV on All Pins
D
Flow-Through Design
D
Wide-Driver Supply Voltage ... ±4.5 V
to ±15 V
D
Functionally Interchangeable With Motorola
MC145406 and Texas Instruments
SN75C1406
DW OR N PACKAGE
(TOP VIEW)
V
1
DD
1RA
1DY
2RA
2DY
3RA
3DY
V
SS
16
2
15
3
14
4
13
5
12
6
11
7
10
8
9
V
CC
1RY
1DA
2RY
2DA
3RY
3DA
GND
description
The TL145406 is a bipolar device containing three independent drivers and receivers that are used to interface
data terminal equipment (DTE) with data circuit-terminating equipment (DCE). The drivers and receivers of the
TL145406 are similar to those of the SN75188 quadruple driver and SN75189A quadruple receiver,
respectively . The pinout matches the flow-through design of the SN75C1406 to reduce the board space required
and allow easy interconnection. The bipolar circuits and processing of the TL145406 provide a rugged low-cost
solution for this function at the expense of quiescent power and external passive components relative to the
SN75C1406.
The TL145406 complies with the requirements of the EIA/TIA 232-E and ITU (formerly CCITT) V .28 standards.
These standards are for data interchange between a host computer and peripheral at signalling rates up to
20 kbit/s. The switching speeds of the TL145406 are fast enough to support rates up to 120 kbit/s with lower
capacitive loads (shorter cables). Interoperability at the higher signalling rates cannot be assured unless the
designer has design control of the cable and the interface circuits at both ends. For interoperability at signalling
rates to 120 kbit/s, use of EIA/TIA-423-B (ITU V .10) and EIA/TIA-422-B (ITU V .11) standards are recommended.
The TL145406 is characterized for operation from 0°C to 70°C.
logic symbol
1RA
2RA
3RA
1DY
2DY
3DY
†
This symbol is in accordance with ANSI/IEEE Std 91-1984
and IEC Publication 617-12.
†
2
4
6
3
5
7
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.
15
13
11
14
12
10
1RY
2RY
3RY
1DA
2DA
3DA
logic diagram (positive logic)
Typical of each receiver
2, 4, 6
RA
Typical of each driver
3, 5, 7
DY
15, 13, 11
14, 12, 10
RY
DA
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
Copyright 1995, Texas Instruments Incorporated
1
TL145406
TRIPLE RS-232 DRIVERS/RECEIVERS
SLLS185A – DECEMBER 1994 – REVISED MARCH 1995
schematic (each driver)
To Other Drivers
V
DD
ESD
9.4 kΩ11.6 kΩ
Input DAx
GND
V
SS
Resistor values shown are nominal.
ESD
4.2 kΩ
To Other
Drivers
ESD
schematic (each receiver)
10.4 kΩ
To Other Drivers
75.8 Ω
9 kΩ 5 kΩ
320 Ω
68.5 Ω3.3 kΩ
To Other Receivers
ESD
1.66 kΩ
ESD
ESD
V
CC
RYx Output
DYx Output
2 kΩ
Input RAx
Resistor values shown are nominal.
2
ESD
3.8 kΩ
10 kΩ
GND
To Other Receivers
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
High-level output current, I
mA
Low-level output current, I
mA
TL145406
TRIPLE RS-232 DRIVERS/RECEIVERS
SLLS185A – DECEMBER 1994 – REVISED MARCH 1995
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)
Supply voltage, V
Supply voltage, V
Supply voltage, V
Input voltage range: Driver –15 V to 7 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Driver output voltage range –15 V to 15 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Receiver low-level output current 20 mA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Continuous total power dissipation See Dissipation Rating Table. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operating free-air temperature range, T
Storage temperature range, T
Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds 260°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.
NOTE 1: All voltages are with respect to the network ground terminal.
(see Note 1) 10 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CC
(see Note 1) 15 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DD
(see Note 1) –15 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SS
Receiver –30 V to 30 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
0°C to 70°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
–65°C to 150°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
stg
PACKAGE
DW 1256 mW 9.7 mW/°C 819 mW
N 1943 mW 14.9 mW/°C 1272 mW
‡
Dissipation ratings are the inverse of the traditional junction-to-case thermal
resistance (R
POWER RATING
θJA
A
DISSIPATION RATING TABLE
TA ≤ 25°C
).
DERATING FACTOR
ABOVE TA = 25°C
‡
TA ≤ 70°C
POWER RATING
†
recommended operating conditions
MIN NOM MAX UNIT
Supply voltage, V
Supply voltage, V
Supply voltage, V
High-level input voltage, VIH (driver only) 1.9 V
Low-level input voltage, VIL (driver only) 0.8 V
Operating free-air temperature, T
DD
SS
CC
p
p
Driver –6
OH
Receiver –0.5
Driver 6
OL
Receiver 16
A
7.5 9 15 V
–7.5 –9 –15 V
4.5 5 5.5 V
0 70 °C
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
3
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