TL145406
TRIPLE RS-232 DRIVERS/RECEIVERS
SLLS185A DECEMBER 1994 REVISED MARCH 1995
1
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
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
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
This symbol is in accordance with ANSI/IEEE Std 91-1984
and IEC Publication 617-12.
1RY
15
2RY
13
3RY
11
1DA
14
2DA
12
3DA
10
1RA
2
2RA
4
3RA
6
1DY
3
2DY
5
3DY
7
logic diagram (positive logic)
DY
RA
3, 5, 7
2, 4, 6
DA
RY
15, 13, 11
14, 12, 10
Typical of each receiver
Typical of each driver
Copyright
1995, Texas Instruments Incorporated
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.
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.
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
V
DD
1RA
1DY
2RA
2DY
3RA
3DY
V
SS
V
CC
1RY
1DA
2RY
2DA
3RY
3DA
GND
DW OR N PACKAGE
(TOP VIEW)
TL145406
TRIPLE RS-232 DRIVERS/RECEIVERS
SLLS185A DECEMBER 1994 REVISED MARCH 1995
2
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
schematic (each driver)
DYx Output
320
68.5
3.3 k
10.4 k
To Other Drivers
VSS
To Other
Drivers
GND
4.2 k
Input DAx
VDD
75.8
9.4 k
11.6 k
To Other Drivers
Resistor values shown are nominal.
ESD
ESD
ESD
ESD
schematic (each receiver)
Input RAx
10 k
3.8 k
9 k
5 k
1.66 k
GND
RYx Output
VCC
ESD
To Other Receivers
Resistor values shown are nominal.
2 k
ESD
To Other Receivers
ESD
TL145406
TRIPLE RS-232 DRIVERS/RECEIVERS
SLLS185A DECEMBER 1994 REVISED MARCH 1995
3
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)
Supply voltage, V
CC
(see Note 1)
10 V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Supply voltage, V
DD
(see Note 1)
15 V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Supply voltage, V
SS
(see Note 1)
15 V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Input voltage range:
Driver
15 V to 7 V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Receiver
30 V to 30 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
A
0
C to 70
C
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Storage temperature range, T
stg
65
C to 150
C
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds
2 60
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.
DISSIPATION RATING TABLE
PACKAGE
TA
25
C
POWER RATING
DERATING FACTOR
ABOVE TA = 25
C
TA
70
C
POWER RATING
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
JA).
recommended operating conditions
MIN
NOM
MAX
UNIT
Supply voltage, VDD
7.5
9
15
V
Supply voltage, VSS
7.5
9
15
V
Supply voltage, VCC
4.5
5
5.5
V
High-level input voltage, VIH (driver only)
1.9
V
Low-level input voltage, VIL (driver only)
0.8
V
High level output current IOH
Driver
6
mA
High-level output current, IOH
Receiver
0.5
mA
Low level output current IOL
Driver
6
mA
Low-level output current, IOL
Receiver
16
mA
Operating free-air temperature, TA
0
70
C
TL145406
TRIPLE RS-232 DRIVERS/RECEIVERS
SLLS185A DECEMBER 1994 REVISED MARCH 1995
4
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
supply currents
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
VDD = 9 V,
VSS = 9 V
15
All inputs at 1.9 V,
No load
VDD = 12 V,
VSS = 12 V
19
mA
IDD
Supply current from VDD
VDD = 15 V,
VSS = 15 V
25
IDD
Supply current from VDD
VDD = 9 V,
VSS = 9 V
4.5
All inputs at 0.8 V,
No load
VDD = 12 V,
VSS = 12 V
5.5
mA
VDD = 15 V,
VSS = 15 V
9
VDD = 9 V,
VSS = 9 V
15
All inputs at 1.9 V,
No load
VDD = 12 V,
VSS = 12 V
19
mA
ISS
Supply current from VSS
VDD = 15 V,
VSS = 15 V
25
ISS
Supply current from VSS
VDD = 9 V,
VSS = 9 V
3.2
All inputs at 0.8 V,
No load
VDD = 12 V,
VSS = 12 V
3.2
mA
VDD = 15 V,
VSS = 15 V
3.2
ICC
Supply current from VCC
All inputs at 5 V,
No load, VCC = 5 V
13.2
20
mA
DRIVER SECTION
electrical characteristics over recommended operating free-air temperture range, V
DD
= 9 V,
V
SS
= 9 V, V
CC
= 5 V (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
VOH
High-level output voltage
VIL = 0.8 V,
RL = 3 k
,
See Figure 1
6
7.5
V
VOL
Low-level output voltage (see Note 2)
VIH = 1.9 V,
RL = 3 k
,
See Figure 1
7.5
6
V
IIH
High-level input current
VI = 5 V,
See Figure 2
10
A
IIL
Low-level input current
VI = 0,
See Figure 2
1.6
mA
IOS(H)
High-level short-circuit output current
(see Note 3)
VIL = 0.8 V,
VO = 0 or VSS, See Figure 1
4.5
10
19.5
mA
IOS(L)
Low-level short-circuit output current
VIH = 2 V,
VO = 0 or VDD, See Figure 1
4.5
10
19.5
mA
rO
Output resistance (see Note 4)
VCC = VDD = VSS = 0,
VO = 2 V to 2 V
300
NOTES:
2. The algebraic convention, where the more positive (less negative) limit is designated as maximum, is used in this data sheet for logic
levels only (e.g., if 10 V is maximum, the typical value is a more negative voltage).
3. Output short-circuit conditions must maintain the total power dissipation below absolute maximum ratings.
4. Test conditions are those specified by EIA/TIA-232-E and as listed above.
switching characteristics, V
CC
= 5 V, V
DD
= 12 V, V
SS
= 12 V, T
A
= 25
C
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
tPLH
Propagation delay time, low- to high-level output
RL = 3 k
to 7 k
,
CL = 15 pF,
315
500
ns
tPHL
Propagation delay time, high- to low-level output
L
,
L
,
See Figure 3
75
175
ns
tTLH
Transition time low to high level output
RL = 3 k
to 7 k
,
CL = 15 pF,
See Figure 3
60
100
ns
tTLH
Transition time, low- to high-level output
RL = 3 k
to 7 k
,
CL = 2500 pF,
See Figure 3 and Note 5
1.7
2.5
s
tTHL
Transition time high to low level output
RL = 3 k
to 7 k
,
CL = 15 pF,
See Figure 3
40
75
ns
tTHL
Transition time, high- to low-level output
RL = 3 k
to 7 k
,
CL = 2500 pF,
See Figure 3 and Note 6
1.5
2.5
s
NOTES:
5. Measured between 3 V and 3 V points of the output waveform (EIA/TIA-232-E conditions). All unused inputs are tied.
6. Measured between 3 V and 3 V points of the output waveform (EIA/TIA-232-E conditions). All unused inputs are tied.
TL145406
TRIPLE RS-232 DRIVERS/RECEIVERS
SLLS185A DECEMBER 1994 REVISED MARCH 1995
5
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
RECEIVER SECTION
electrical characteristics over recommended operating conditions (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
VIT
Positive going threshold voltage
See Figure 5
TA = 25
C
1.75
1.9
2.3
VIT+
Positive-going threshold voltage
See Figure 5
TA = 0
C to 70
C
1.55
2.3
V
VIT
Negative-going threshold voltage
0.75
0.97
1.25
V
Vhys
Input hysteresis (VIT + VIT)
0.5
VOH
High level output voltage
IOH = 0 5 mA
VIH = 0.75 V
2.6
4
5
V
VOH
High-level output voltage
IOH = 0.5 mA
Inputs open
2.6
V
VOL
Low-level output voltage
IOL = 10 mA,
VI = 3 V
0.2
0.45
V
IIH
High level input current
VI = 25 V,
See Figure 5
3.6
8.3
mA
IIH
High-level input current
VI = 3 V,
See Figure 5
0.43
mA
IIL
Low level input current
VI = 25 V,
See Figure 5
3.6
8.3
mA
IIL
Low-level input current
VI = 3 V,
See Figure 5
0.43
mA
IOS
Short-circuit output current
3.4
12
mA
All typical values are at TA = 25
C, VCC = 5, VDD = 9 V, and VSS = 9 V.
switching characteristics, V
CC
= 5 V, V
DD
= 12 V, V
SS
= 12 V, T
A
= 25
C
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
tPLH
Propagation delay time, low- to high-level output
107
425
ns
tPHL
Propagation delay time, high- to low-level output
CL = 50 pF,
RL = 5 k
,
42
150
ns
tTLH
Transition time, low- to high-level output
L
,
See Figure 6
L
175
400
ns
tTHL
Transition time, high- to low-level output
16
60
ns
PARAMETER MEASUREMENT INFORMATION
Figure 1. Driver Test Circuit
for V
OH
, V
OL
, I
OS(H)
, and I
OS(L)
IOS(L)
IOS(H)
VSS
VDD
VCC
VI
VO
VDD or GND
VSS or GND
RL = 3 k
Figure 2. Driver Test Circuit for I
IH
and I
IL
IIL
IIH
VSS
VDD
VCC
VI
VI
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