SN75LP196
LOW-POWER MULTIPLE RS-232 DRIVERS AND RECEIVERS
SLLS294A APRIL 1998 REVISED JUNE 1999
1
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
D
Single-Chip RS-232 Interface for an
External Modem or Other Computer
Peripheral Serial Port
D
Designed to Transmit and Receive 4-
s
Pulses (Equivalent to 256 kbit/s)
D
Wide Driver Supply-Voltage Range:
4.75 V to 15 V
D
Driver Output Slew Rates Are Controlled
Internally to 30 V/
s Maximum
D
Receiver Input Hysteresis . . . 1000 mV
Typical
D
RS-232 Bus-Pin ESD Protection Exceeds
15 kV Using Human-Body Model (HBM)
D
Five Drivers and Three Receivers Meet or
Exceed the Requirements of TIA/EIA-232-F
and ITU v.28 Standards
D
Complements the SN75LP1185
D
Designed to Replace the Industry-Standard
SN75196 With the Same Flow-Through
Pinout
D
Package Options Include Plastic Small
Outline (DW), Shrink Small-Outline (DB),
Thin Shrink Small-Outline (PW), and
Dual-in-Line (N) Packages
description
The SN75LP196 is a low-power bipolar device containing five drivers and three receivers, with 15 kV of ESD
protection on the bus pins with respect to each other. Bus pins are defined as those pins that tie directly to the
serial-port connector, including GND. The pinout matches the flow-through design of the industry-standard
SN75196 and allows easy interconnection of the UART and serial-port connector of the IBM PC/AT and
compatibles. This device provides a rugged, low-cost solution for this function with the combination of bipolar
processing and 15-kV ESD protection.
The SN75LP196 has internal slew-rate control to provide a maximum rate of change in the output signal of
30 V/
s. The driver output swing is clamped nominally at
6 V to enable the higher data rates associated with
this device and to reduce EMI emissions. Even though the driver outputs are clamped, they can handle voltages
up to
15 V without damage. All the logic inputs can accept 3.3-V or 5-V input signals.
The SN75LP196 complies with the requirements of the TIA/EIA-232-F and the ITU v.28 standards. These
standards are for data interchange between a host computer and peripheral at signaling rates up to 20 kbit/s.
The switching speeds of the SN75LP196 support rates up to 256 kbit/s with lower capacitive loads (shorter
cables).
The SN75LP196 is characterized for operation from 0
C to 70
C.
Copyright
1999, 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.
PC/AT is a trademark of IBM Corporation.
DB, DW, N, OR PW PACKAGE
(TOP VIEW)
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
V
CC
DA1
DA2
DA3
RY1
RY2
DA4
RY3
DA5
GND
V
DD
DY1
DY2
DY3
RA1
RA2
DY4
RA3
DY5
V
SS
SN75LP196
LOW-POWER MULTIPLE RS-232 DRIVERS AND RECEIVERS
SLLS294A APRIL 1998 REVISED JUNE 1999
2
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
Function Tables
DRIVER
INPUT
DA
OUTPUT
DY
H
L
L
H
Open
L
RECEIVER
INPUT
RA
OUTPUT
RY
H
L
L
H
Open
H
logic diagram (positive logic)
2
3
4
5
6
7
8
9
19
18
17
16
15
14
13
12
DA1
DA2
DA3
RY1
RY2
DA4
RY3
DA5
DY1
DY2
DY3
RA1
RA2
DY4
RA3
DY5
SN75LP196
LOW-POWER MULTIPLE RS-232 DRIVERS AND RECEIVERS
SLLS294A APRIL 1998 REVISED JUNE 1999
3
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)
Positive supply-voltage range (see Note 1): V
CC
0.5 V to 7 V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
V
DD
(see Note 1)
0.5 V to 15 V
. . . . . . . . . . . . . . . . . . . . . . . . . . .
Negative supply-voltage range, V
SS
(see Note 1)
0.5 V to 15 V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Input-voltage range, V
I
: Receiver (RA)
30 V to 30 V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Driver (DA)
0.5 V to V
CC
+0.4 V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Output-voltage range, V
O
: Receiver (RY)
0.5 V to 6 V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Driver (DY)
15 V to 15 V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Electrostatic discharge: Bus pins (human-body model) (see Note 2)
Class 3, A: 15 kV
. . . . . . . . . . . . . . . . . . .
All pins (human-body model) (see Note 2)
Class 3, A: 5 kV
. . . . . . . . . . . . . . . . . . . . . .
All pins (machine model)
200 V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Package thermal impedance,
JA
(see Notes 3 and 4): DB package
115
C/W
. . . . . . . . . . . . . . . . . . . . . . . . . .
DW package
97
C/W
. . . . . . . . . . . . . . . . . . . . . . . . . . .
N package
67
C/W
. . . . . . . . . . . . . . . . . . . . . . . . . . . .
PW package
128
C/W
. . . . . . . . . . . . . . . . . . . . . . . . . .
Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds
260
C
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Storage temperature range, T
stg
65
C to 150
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.
NOTES:
1. All voltage values are with respect to network ground terminal, unless otherwise noted.
2. Per MIL-STD-883 Method 3015.7
3. Maximum power dissipation is a function of TJ(max),
JA, and TA. The maximum allowable power dissipation at any allowable
ambient temperature is PD = (TJ(max) TA)/
JA. Operating at the absolute maximum TJ of 150
C can impact reliability.
4. The package thermal impedance is calculated in accordance with JESD 51, except for through-hole packages, which use a trace
length of zero.
recommended operating conditions
MIN
NOM
MAX
UNIT
VCC
Supply voltage (see Note 5)
4.75
5
5.25
V
VDD
Supply voltage (see Note 6)
9
12
15
V
VSS
Supply voltage (see Note 6)
9
12
15
V
VIH
High-level input voltage
DA
2
V
VIL
Low-level input voltage
DA
0.8
V
VI
Receiver input voltage
RA
25
25
V
IOH
High-level output current
RY
1
mA
IOL
Low-level output current
RY
2
mA
TA
Operating free-air temperature
0
70
C
NOTES:
5. VCC cannot be greater than VDD.
6. The device operates down to VDD = VCC and |VSS| = VCC, but supply currents increase and other parameters may vary slightly from
the data-sheet limits.
SN75LP196
LOW-POWER MULTIPLE RS-232 DRIVERS AND RECEIVERS
SLLS294A APRIL 1998 REVISED JUNE 1999
4
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
supply currents over the recommended operating conditions (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
Supply current for VCC ICC
VDD = 9 V,
VSS = 9 V
1000
A
Supply current for VCC, ICC
No load
VDD = 12 V,
VSS = 12 V
1000
A
Supply current for VDD IDD
No load,
All inputs at
VDD = 9 V,
VSS = 9 V
800
A
Supply current for VDD, IDD
minimum VOH or
maximum V
VDD = 12 V,
VSS = 12 V
800
A
Supply current for VSS ISS
maximum VOL
VDD = 9 V,
VSS = 9 V
800
A
Supply current for VSS, ISS
VDD = 12 V,
VSS = 12 V
800
A
driver electrical characteristics over the recommended operating conditions (unless otherwise
noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
VOH
High level output voltage
VIL = 0.8 V,
RL 3 k
VDD = 9 V,
VSS = 9 V,
See Note 7
5
5.8
6.6
V
VOH
High-level output voltage
RL = 3 k
,
See Figure 1
VDD = 12 V,
VSS = 12 V,
See Note 8
5
5.8
6.6
V
VOL
Low level output voltage
VIH = 2 V,
RL 3 k
VDD = 9 V,
VSS = 9 V,
See Note 7
5
5.8
6.9
V
VOL
Low-level output voltage
RL = 3 k
,
See Figure 1
VDD = 12 V,
VSS = 12 V,
See Note 8
5
5.8
6.9
V
IIH
High-level input current
VI at VCC
1
A
IIL
Low-level input current
VI at GND
1
A
IOS(H)
Short-circuit
high-level output current
VO = GND or VSS,
See Figure 2 and Note 9
30
55
mA
IOS(L)
Short-circuit
low-level output current
VO = GND or VDD,
See Figure 2 and Note 9
30
55
mA
ro
Output resistance
VDD = VSS = VCC = 0,
VO = 2 V to 2 V
300
NOTES:
7. Minimum RS-232 driver output voltages are not attained with
5-V supplies. With VDD less than VCC + 2 V, the supply currents may
increase. For RS-232 compliant output swings and minimum power consumption, VDD
VCC + 2 V.
8. Maximum output swing is nominally clamped at
6 V to enable the higher data rates associated with this device and to reduce EMI
emissions. The driver outputs may slightly exceed the maximum output voltage over the full VCC and temperature ranges.
9. Not more than one output should be shorted at one time.
SN75LP196
LOW-POWER MULTIPLE RS-232 DRIVERS AND RECEIVERS
SLLS294A APRIL 1998 REVISED JUNE 1999
5
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
driver switching characteristics over operating free-air temperature range (unless otherwise
noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
tPHL
Propagation delay time,
high- to low-level output
RL = 3 k
to 7 k
, CL = 15 pF, See Figure 1
300
800
1600
ns
tPLH
Propagation delay time,
low- to high-level output
RL = 3 k
to 7 k
, CL = 15 pF, See Figure 1
300
800
1600
ns
VCC = 5 V,
VDD = 12 V,
Using VTR = 10%-to-90% transition region,
Driver speed = 250 kbit/s, CL = 15 pF
375
2240
tTLH
Transition time,
low- to high-level output
VDD = 12 V,
VSS = 12 V,
RL = 3 k
to 7 k
,
Using VTR =
3 V transition region,
Driver speed = 250 kbit/s, CL = 15 pF
200
1500
ns
See Figure 1 and
Note 10
Using VTR =
3 V transition region,
Driver speed = 125 kbit/s, CL = 2500 pF
2750
VCC = 5 V,
VDD = 12 V,
Using VTR = 10%-to-90% transition region,
Driver speed = 250 kbit/s, CL = 15 pF
375
2240
tTHL
Transition time,
high- to low-level output
VDD = 12 V,
VSS = 12 V,
RL = 3 k
to 7 k
,
Using VTR =
3 V transition region,
Driver speed = 250 kbit/s, CL = 15 pF
200
1500
ns
See Figure 1 and
Note 10
Using VTR =
3 V transition region,
Driver speed = 125 kbit/s, CL = 2500 pF
2750
SR
Output slew rate
VCC = 5 V,
VDD = 12 V,
VSS = 12 V,
Using VTR =
3 V transition region,
Driver speed = 0 to 250 kbit/s, CL = 15 pF
4
20
30
V/
s
NOTE 10: Maximum output swing is limited to
6 V to enable the higher data rates associated with this device and to reduce EMI emissions.
receiver electrical characteristics over recommended operating free-air temperature range
(unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
VIT+
Positive-going input threshold voltage
See Figure 3
1.6
2
2.55
V
VIT
Negative-going input threshold voltage
See Figure 3
0.6
1
1.45
V
VHYS
Input hysteresis, VIT+ VIT
See Figure 3
750
1000
mV
VOH
High-level output voltage
IOH = 1 mA
2.5
3.9
V
VOL
Low-level output voltage
IOL = 2 mA
0.33
0.5
V
IIH
High level input current
VI = 3 V
0.43
0.6
1
mA
IIH
High-level input current
VI = 25 V
3.6
5.1
8.3
mA
IIL
Low level input current
VI = 3 V
0.43
0.6
1
mA
IIL
Low-level input current
VI = 25 V
3.6
5.1
8.3
mA
IOS(H)
Short-circuit high-level output current
VO = 0,
See Figure 5 and Note 9
20
mA
IOS(L)
Short-circuit low-level output current
VO = VCC,
See Figure 5 and Note 9
20
mA
RIN
Input resistance
VI =
3 V to
25 V
3
5
7
k
NOTE 9: Not more than one output should be shorted at one time.
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