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
TL145406
IDDSupply current from V
ISSSupply current from V
L
,
L
,
t
Transition time, lo
high-level output
t
Transition time, high- to low-level output
TRIPLE RS-232 DRIVERS/RECEIVERS
SLLS185A – DECEMBER 1994 – REVISED MARCH 1995
supply currents
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
All inputs at 1.9 V , No load
pp
pp
I
Supply current from V
CC
DD
SS
CC
All inputs at 0.8 V , No load
All inputs at 1.9 V , No load
All inputs at 0.8 V , No load
All inputs at 5 V, No load, VCC = 5 V 13.2 20 mA
VDD = 9 V, VSS = –9 V 15
VDD = 12 V, VSS = –12 V 19
VDD = 15 V, VSS = –15 V 25
VDD = 9 V, VSS = –9 V 4.5
VDD = 12 V, VSS = –12 V 5.5
VDD = 15 V, VSS = –15 V 9
VDD = 9 V, VSS = –9 V –15
VDD = 12 V, VSS = –12 V –19
VDD = 15 V, VSS = –15 V –25
VDD = 9 V, VSS = –9 V –3.2
VDD = 12 V, VSS = –12 V –3.2
VDD = 15 V, VSS = –15 V –3.2
DRIVER SECTION
mA
mA
mA
mA
electrical characteristics over recommended operating free-air temperture range, V
= –9 V, VCC = 5 V (unless otherwise noted)
V
SS
PARAMETER TEST CONDITIONS MIN
V
V
I
IH
I
IL
I
OS(H)
I
OS(L)
r
O
NOTES: 2. The algebraic convention, where the more positive (less negative) limit is designated as maximum, is used in this data sheet for logic
High-level output voltage VIL = 0.8 V, RL = 3 kΩ, See Figure 1 6 7.5 V
OH
Low-level output voltage (see Note 2) VIH = 1.9 V, RL = 3 kΩ, See Figure 1 –7.5 –6 V
OL
High-level input current VI = 5 V, See Figure 2 10 µA
Low-level input current VI = 0, See Figure 2 –1.6 mA
High-level short-circuit output current
(see Note 3)
Low-level short-circuit output current VIH = 2 V, VO = 0 or VDD, See Figure 1 4.5 10 19.5 mA
Output resistance (see Note 4) VCC = VDD = VSS = 0, VO = –2 V to 2 V 300 Ω
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.
VIL = 0.8 V, VO = 0 or VSS, See Figure 1 –4.5 –10 –19.5 mA
TYP
= 9 V,
DD
MAX UNIT
switching characteristics, VCC = 5 V, VDD = 12 V, VSS = –12 V, TA = 25°C
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
t
PLH
t
PHL
TLH
THL
NOTES: 5. Measured between –3 V and 3 V points of the output waveform (EIA/TIA-232-E conditions). All unused inputs are tied.
Propagation delay time, low- to high-level output
Propagation delay time, high- to low-level output
w- to
6. Measured between 3 V and –3 V points of the output waveform (EIA/TIA-232-E conditions). All unused inputs are tied.
p
p
R
= 3 kΩ to 7 kΩ,C
See Figure 3
RL = 3 kΩ to 7 kΩ,C
See Figure 3
RL = 3 kΩ to 7 kΩ, CL = 2500 pF,
See Figure 3 and Note 5
RL = 3 kΩ to 7 kΩ,C
See Figure 3
RL = 3 kΩ to 7 kΩ, CL = 2500 pF,
See Figure 3 and Note 6
= 15 pF,
= 15 pF,
L
= 15 pF,
L
315 500 ns
75 175 ns
60 100 ns
1.7 2.5 µs
40 75 ns
1.5 2.5 µs
4
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
V
Positive-going threshold voltage
See Figure 5
V
VOHHigh-level output voltage
I
mA
V
IIHHigh-level input current
mA
IILLow-level input current
mA
L
,
L
TL145406
TRIPLE RS-232 DRIVERS/RECEIVERS
SLLS185A – DECEMBER 1994 – REVISED MARCH 1995
RECEIVER SECTION
electrical characteristics over recommended operating conditions (unless otherwise noted)
PARAMETER TEST CONDITIONS MIN
IT+
V
V
V
I
OS
†
All typical values are at TA = 25°C, VCC = 5, VDD = 9 V, and VSS = –9 V .
Negative-going threshold voltage 0.75 0.97 1.25
IT–
Input hysteresis (V
hys
p
Low-level output voltage IOL = 10 mA, VI = 3 V 0.2 0.45 V
OL
p
p
Short-circuit output current –3.4 –12 mA
IT+
– V
) 0.5
IT–
OH
VI = 25 V, See Figure 5 3.6 8.3
VI = 3 V, See Figure 5 0.43
VI = –25 V, See Figure 5 –3.6 –8.3
VI = –3 V , See Figure 5 –0.43
= –0.5
TA = 25°C 1.75 1.9 2.3
TA = 0°C to 70 °C 1.55 2.3
VIH = 0.75 V 2.6 4 5
Inputs open 2.6
TYP
Ĕ
MAX UNIT
switching characteristics, VCC = 5 V, VDD = 12 V, VSS = –12 V, TA = 25°C
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
t
Propagation delay time, low- to high-level output 107 425 ns
PLH
t
Propagation delay time, high- to low-level output
PHL
t
Transition time, low- to high-level output
TLH
t
Transition time, high- to low-level output 16 60 ns
THL
C
= 50 pF,
See Figure 6
RL = 5 kΩ,
PARAMETER MEASUREMENT INFORMATION
I
OS(L)
V
DD
V
CC
V
I
V
O
V
SS
–I
OS(H)
RL = 3 kΩ
VDD or GND
VSS or GND
I
IH
V
I
–I
IL
V
I
42 150 ns
175 400 ns
V
DD
V
CC
V
SS
Figure 1. Driver Test Circuit
for V
OH
, VOL, I
OS(H)
, and I
Figure 2. Driver Test Circuit for IIH and I
OS(L)
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
IL
5
TL145406
TRIPLE RS-232 DRIVERS/RECEIVERS
SLLS185A – DECEMBER 1994 – REVISED MARCH 1995
PARAMETER MEASUREMENT INFORMATION
V
DD
Input
V
CC
Pulse
Generator
See Note A
R
L
V
SS
TEST CIRCUIT
C
L
(see Note B)
Input
Output
t
THL
1.5 V
90%
1.5 V
t
PHL
50%
10%
VOLTAGE WAVEFORMS
10%
50%
t
PLH
90%
t
TLH
3 V
0
V
V
OH
OL
NOTES: A. The pulse generator has the following characteristics: tw = 25 µs, PRR = 20 kHz, ZO = 50 Ω, tr = tf < 50 ns.
B. CL includes probe and jig capacitance.
Figure 3. Driver Test Circuit and Voltage Waveforms
V
DD
V
CC
V
I
V
SS
–I
OS
VIT, V
V
DD
V
CC
I
V
OL
V
SS
I
OL
Figure 4. Receiver Test Circuit Figure 5. Receiver Test Circuit
for VIT, VOH, and V
t
PHL
10%
OL
50%
50%
10%
Pulse
Generator
See Note A
V
DD
Input
V
CC
V
SS
TEST CIRCUIT
for I
R
L
OS
C
L
(see Note B)
Input
Output
t
THL
50%
90%
50%
VOLTAGE WAVEFORMS
–I
V
OH
t
PLH
90%
t
TLH
OH
4 V
0
V
V
OH
OL
NOTES: A. The pulse generator has the following characteristics: tw = 25 µs, PRR = 20 kHz, ZO = 50 Ω, tr = tf < 50 ns.
B. CL includes probe and jig capacitance.
Figure 6. Receiver Propagation and Transition Times
6
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
ÁÁÁÁ
ÁÁÁÁ
TL145406
TRIPLE RS-232 DRIVERS/RECEIVERS
SLLS185A – DECEMBER 1994 – REVISED MARCH 1995
TYPICAL CHARACTERISTICS
DRIVER
DRIVER
VOLTAGE TRANSFER CHARACTERISTICS
12
VDD = 12 V, VSS = –12 V
9
VDD = 9 V, VSS = –9 V
6
VDD = 6 V, VSS = –6 V
3
20
16
12
8
4
VDD = 9 V
VSS = –9 V
TA = 25°C
OUTPUT CURRENT
vs
OUTPUT VOLTAGE
VOL(VI = 1.9 V)
0
–3
O
V
VO – Output Voltage – V
–6
–9
–12
0
12
9
6
3
RL = 3 kΩ
TA = 25°C
VI – Input Voltage – V
Figure 7
DRIVER
SHORT-CIRCUIT OUTPUT CURRENT
vs
FREE-AIR TEMPERATURE
I
(VI = 1.9 V)
OS(L)
0
–4
–8
O
I
IO – Output Current – mA
–12
–16
1.81.61.41.210.80.60.40.2
2
–20
–16
VOH(VI = 0.8 V)
VO – Output Voltage – V
3-kΩ
Load Line
12840–4–8–12
16
Figure 8
DRIVER
SLEW RATE
vs
LOAD CAPACITANCE
1000
µs
100
VDD = 9 V
VSS = –9 V
RL = 3 kΩ
TA = 25°C
0
VDD = 9 V
VSS = –9 V
–3
VO = 0
–6
I
(VI = 0.8 V)
OS
–9
IOS – Short-Circuit Output Current – mA
I
–12
0
TA – Free-Air Temperature – ° C
OS(H)
Figure 9
10
SR – Slew Rate – V/
1
70605040302010
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
10
1000100
CL – Load Capacitance – pF
Figure 10
10000
7
TL145406
TRIPLE RS-232 DRIVERS/RECEIVERS
SLLS185A – DECEMBER 1994 – REVISED MARCH 1995
TYPICAL CHARACTERISTICS
2.4
2.2
2
1.8
1.6
1.4
1.2
1
Input Threshold Voltage – V
0.8
0.6
0.4
RECEIVER
INPUT THRESHOLD VOLTAGE
vs
FREE-AIR TEMPERATURE
VIT +
VIT –
TA – Free-Air Temperature – ° C
Figure 11
RECEIVER
INPUT THRESHOLD VOLTAGE
vs
SUPPLY VOLTAGE
2
V
1.8
1.6
1.4
1.2
1
V
0.8
0.6
Input Threshold Voltage – V
0.4
0.2
706050403020100
0
2
VCC – Supply Voltage – V
IT–
IT+
9876543
10
Figure 12
RECEIVER
NOISE REJECTION
6
5
4
3
Amplitude – V
NOTE A:This figure shows the maximum amplitude of a
CC = 12 pF
2
CC = 100 pF
1
0
10
40 100 400 1000 4000
tw – Pulse Duration – ns
positive-going pulse that, starting from 0, does not cause
a change of the output level.
VCC = 5 V
TA = 25°C
See Note A
CC = 300 pF
CC = 500 pF
10000
Figure 13
16
14
12
10
8
6
CC
V
VCC– – Supply Voltage – V
4
2
0
0
RECEIVER
MAXIMUM SUPPLY VOLTAGE
vs
FREE-AIR TEMPERATURE
RL ≥ 3 kΩ (from each output to GND)
70605040302010
TA – Free-Air Temperature – ° C
Figure 14
8
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
TL145406
TRIPLE RS-232 DRIVERS/RECEIVERS
SLLS185A – DECEMBER 1994 – REVISED MARCH 1995
APPLICATION INFORMATION
Diodes placed in series with the V
and VSS leads protect the TL145406 during the fault condition in which the device
DD
outputs are shorted to ±15 V and the power supplies are at low. Diodes also provide low-impedance paths to ground
(see Figure 15).
V
DD
V
Output
±15 V
TL145406 TL145406
DD
V
SS
V
SS
Figure 15. Power-Supply Protection to Meet Power-Off Fault Conditions of ANSI EIA/TIA-232-E
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
9
IMPORTANT NOTICE
T exas Instruments and its subsidiaries (TI) reserve the right to make changes to their products or to discontinue
any product or service without notice, and advise customers to obtain the latest version of relevant information
to verify, before placing orders, that information being relied on is current and complete. All products are sold
subject to the terms and conditions of sale supplied at the time of order acknowledgement, including those
pertaining to warranty, patent infringement, and limitation of liability.
TI warrants performance of its semiconductor products to the specifications applicable at the time of sale in
accordance with TI’s standard warranty. Testing and other quality control techniques are utilized to the extent
TI deems necessary to support this warranty . Specific testing of all parameters of each device is not necessarily
performed, except those mandated by government requirements.
CERT AIN APPLICATIONS USING SEMICONDUCTOR PRODUCTS MAY INVOLVE POTENTIAL RISKS OF
DEATH, PERSONAL INJURY, OR SEVERE PROPERTY OR ENVIRONMENTAL DAMAGE (“CRITICAL
APPLICATIONS”). TI SEMICONDUCTOR PRODUCTS ARE NOT DESIGNED, AUTHORIZED, OR
WARRANTED TO BE SUITABLE FOR USE IN LIFE-SUPPORT DEVICES OR SYSTEMS OR OTHER
CRITICAL APPLICA TIONS. INCLUSION OF TI PRODUCTS IN SUCH APPLICATIONS IS UNDERST OOD TO
BE FULLY AT THE CUSTOMER’S RISK.
In order to minimize risks associated with the customer’s applications, adequate design and operating
safeguards must be provided by the customer to minimize inherent or procedural hazards.
TI assumes no liability for applications assistance or customer product design. TI does not warrant or represent
that any license, either express or implied, is granted under any patent right, copyright, mask work right, or other
intellectual property right of TI covering or relating to any combination, machine, or process in which such
semiconductor products or services might be or are used. TI’s publication of information regarding any third
party’s products or services does not constitute TI’s approval, warranty or endorsement thereof.
Copyright 1998, Texas Instruments Incorporated
Loading...