High Speed +5V Powered RS-232
Transmitters/Receivers
The HIN202A and HIN232A high-speed RS-232
transmitter/receiver interface circuits meet all ElA highspeed RS-232E and V.28 specifications, and are particularly
suited for those applications where ±12V is not available.
They require a single +5V power supply and feature onboard
charge pump voltage converters which generate +10V and
-10V supplies from the 5V supply.
The drivers feature true TTL/CMOS input compatibility, slew
rate-limited output, and 300Ω power-off source impedance.
The receivers can handle up to ±30V input, and have a 3kΩ
to 7kΩ input impedance. The receivers also feature
hysteresis to greatly improve noise rejection.
Applications
• Any System Requiring High-Speed RS-232
Communication Ports
- Computer - Portable, Mainframe, Laptop
- Peripheral - Printers and Terminals
- Instrumentation, UPS
- Modems
FN4316.8
Features
• Meets All RS-232E and V.28 Specifications
• Requires Only 0.1µF or Greater External Capacitors
C1+External capacitor (+ terminal) is connected to this lead.
C1-External capacitor (- terminal) is connected to this lead.
C2+External capacitor (+ terminal) is connected to this lead.
C2-External capacitor (- terminal) is connected to this lead.
T
IN
T
OUT
R
IN
R
OUT
Power Supply Input 5V ±10%.
Transmitter Inputs. These leads accept TTL/CMOS levels. An internal 400kΩ pull-up resistor to V
Transmitter Outputs. These are RS-232 levels (nominally ±10V).
Receiver Inputs. These inputs accept RS-232 input levels. An internal 5kΩ pull-down resistor to GND is connected to each input.
CAUTION: Stresses above those listed in “Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress only rating and operation of the
device at these or any other conditions above those indicated in the operational sections of this specification is not implied.
NOTE:
1. θ
is measured with the component mounted on a low effective thermal conductivity test board in free air. See Tech Brief TB379 for details.
JA
Electrical SpecificationsTest Conditions: V
= +5V ±10%, C1-C4 = 0.1µF; TA = Operating Temperature Range
CC
PARAMETERTEST CONDITIONSMINTYPMAXUNITS
SUPPLY CURRENTS
Power Supply Current, I
CC
No Load,
T
= 25oC
A
LOGIC AND TRANSMITTER INPUTS, RECEIVER OUTPUTS
Input Logic Low, V
Input Logic High, V
Transmitter Input Pullup Current, I
lL
lH
P
TTL/CMOS Receiver Output Voltage Low, V
TTL/CMOS Receiver Output Voltage High, V
T
IN
T
IN
TIN = 0V-15200µA
OLIOUT
OHIOUT
= 3.2mA -0.10.4V
= -1mA3.54.6-V
RECEIVER INPUTS
RS-232 Input Voltage Range, V
Receiver Input Impedance, R
Receiver Input Low Threshold, V
Receiver Input High Threshold, V
Receiver Input Hysteresis, V
IN
IN
(H-L)VCC = 5V,
IN
(L-H)VCC = 5V,
IN
HYST
TA = 25oC, VIN = ±3V3.05.07.0kΩ
T
= 25oC
A
T
= 25oC
A
VCC = 5V, No Hysteresis in Shutdown Mode0.20.51.0V
TIMING CHARACTERISTICS
Transmitter, Receiver Propagation Delay, t
Transition Region Slew Rate, SR
T
PD
RL = 3kΩ, CL = 1000pF, Measured from +3V to 3V or -3V to +3V, (Note 2) 1 Transmitter Switching
TRANSMITTER OUTPUTS
Output Voltage Swing, T
Output Resistance, R
OUT
OUT
RS-232 Output Short Circuit Current, I
SC
Transmitter Outputs, 3kΩ to Ground±5±9±10V
VCC = V+ = V- = 0V, V
T
Shorted to GND-±10-mA
OUT
ESD PERFORMANCE
RS-232 Pins
(T
, RIN)
OUT
Human Body Model-±15-kV
IEC1000-4-2 Contact Discharge-±8-kV
IEC1000-4-2 Air Gap (Note 3)-±15-kV
= +5V ±10%, C1-C4 = 0.1µF; TA = Operating Temperature Range (Continued)
CC
PARAMETERTEST CONDITIONSMINTYPMAXUNITS
All Other PinsHuman Body Model-±2-kV
NOTES:
2. Guaranteed by design.
3. Meets level 4.
Test Circuits (HIN232A)
0.1µF
C3
0.1µF
C1
0.1µF
C2
3kΩ
T2
OUTPUT
RS-232
±30V INPUT
-
+
+
-
+
-
+
0.1µF C4
+4.5V TO
+5.5V INPUT
OUT
IN
T1
R1
R2
V
CC
GND
OUT
R1
OUT
T1
T2
OUT
16
15
14
13
IN
12
11
IN
10
IN
9
3kΩ
T1 OUTPUT
RS-232 ±30V INPUT
TTL/CMOS OUTPUT
TTL/CMOS INPUT
TTL/CMOS INPUT
TTL/CMOS OUTPUT
C1+
1
V+
2
C1-
3
C2+
4
C2-
5
-
V-
6
T2
7
8
R2
R
OUT
C1+
1
V+
2
C1-
3
C2+
4
C2-
5
6
V-
T2
7
R2
8
= VIN/I
V
= ±2V
IN
OUT
IN
T1
R1
R2
V
GND
OUT
R1
OUT
T1
T2
OUT
T2
CC
IN
IN
IN
OUT
T1
A
16
15
14
13
12
11
10
9
OUT
FIGURE 1. GENERAL TEST CIRCUITFIGURE 2. POWER-OFF SOURCE RESISTANCE
VOLTAGE DOUBLER
V
CC
GND
RC
OSCILLATOR
S1
S3
C1+
C1-
S2
+
C1
-
S4
+
C3
V
FIGURE 3. CHARGE PUMP
Detailed Description
The HIN2XXA family of high-speed RS-232
transmitters/receivers are powered by a single +5V power
supply, feature low power consumption, and meet all ElA
RS232C and V.28 specifications. The circuit is divided into
three sections: the charge pump, transmitter, and receiver.
Charge Pump
An equivalent circuit of the charge pump is illustrated in
Figure 3. The charge pump contains two sections: The
voltage doubler and the voltage inverter. Each section is
driven by a two phase, internally generated clock to
generate +10V and -10V. The nominal clock frequency is
125kHz. During phase one of the clock, capacitor C1 is
CC
CONFIGURATION
VOLTAGE INVERTER
V+ = 2V
GND
S5
CC
S7
charged to V
added to V
V
. During phase two, C2 is also charged to 2VCC, and
CC
C2+
CC
, producing a signal across C3 equal to twice
CC
S6
C2-
+
C2
-
S8
+
C4
-
. During phase two, the voltage on C1 is
then during phase one, it is inverted with respect to ground
to produce a signal across C4 equal to -2V
CC
pump accepts input voltages up to 5.5V. The output
impedance of the voltage doubler section (V+) is
approximately 200Ω, and the output impedance of the
voltage inverter section (V-) is approximately 450Ω. A typical
application uses 0.1µF capacitors for C1-C4, however, the
value is not critical. Increasing the values of C1 and C2 will
lower the output impedance of the voltage doubler and
inverter, increasing the values of the reservoir capacitors, C3
and C4, lowers the ripple on the V+ and V- supplies.
GND
V- = - (V+)
. The charge
5
Page 6
HIN202A, HIN232A
Transmitters
The transmitters are TTL/CMOS compatible inverters which
translate the inputs to RS-232 outputs. The input logic threshold
is about 26% of V
, or 1.3V for VCC = 5V. A logic 1 at the
CC
input results in a voltage of between -5V and V- at the output,
and a logic 0 results in a voltage between +5V and (V+ -0.6V).
Each transmitter input has an internal 400kΩ pullup resistor so
any unused input can be left unconnected and its output
remains in its low state. The output voltage swing meets the
RS-232C specifications of ±5V minimum with the worst case
conditions of: all transmitters driving 3kΩ minimum load
impedance, V
= 4.5V, and maximum allowable operating
CC
temperature. The transmitters have an internally limited output
slew rate which is less than 30V/µs. The outputs are short
circuit protected and can be shorted to ground indefinitely. The
powered down output impedance is a minimum of 300Ω with
±2V applied to the outputs and V
CC
= 0V.
Receivers
The receiver inputs accept up to ±30V while presenting the
required 3kΩ to 7kΩ input impedance even if the power is off
(V
= 0V). The receivers have a typical input threshold of
CC
1.3V which is within the ±3V limits, known as the transition
region, of the RS-232 specifications. The receiver output is 0V
to V
. The output will be low whenever the input is greater
CC
than 2.4V and high whenever the input is floating or driven
between +0.8V and -30V. The receivers feature 0.5V hysteresis
(except during shutdown) to improve noise rejection.
V+
V
GND < T
CC
T
XIN
XIN
V-
< V
400kΩ
CC
300Ω
FIGURE 4. TRANSMITTER
V- < V
T
OUT
TOUT
< V+
V
CC
R
-30V < R
XIN
GND
XIN
< +30V
5kΩ
GND < V
R
OUT
ROUT
< V
CC
FIGURE 5. RECEIVER
T
IN
OR
R
IN
T
OUT
OR
R
OUT
t
PHL
AVERAGE PROPAGATION DELAY =
t
PLH
t
PHL + tPLH
2
V
OL
V
OL
FIGURE 6. PROPAGATION DELAY DEFINITION
Application Information
The HIN2XXA may be used for all RS-232 data terminal and
communication links. It is particularly useful in applications
where ±12V power supplies are not available for
conventional RS-232 interface circuits. The applications
presented represent typical interface configurations.
A simple duplex RS-232 port with CTS/RTS handshaking is
illustrated in Figure 7. Fixed output signals such as DTR
(data terminal ready) and DSRS (data signaling rate select)
is generated by driving them through a 5kΩ resistor
connected to V+.
In applications requiring four RS-232 inputs and outputs
(Figure 8), note that each circuit requires two charge pump
capacitors (C1 and C2) but can share common reservoir
capacitors (C3 and C4). The benefit of sharing common
reservoir capacitors is the elimination of two capacitors and
the reduction of the charge pump source impedance which
effectively increases the output swing of the transmitters.
INPUTS
OUTPUTS
TTL/CMOS
C1
0.1µF
C2
0.1µF
+5V
RTS
RD
CTS
TD
16
1
+
3
-
+
-
11
10
12
4
5
9
HIN232A
T1
R2
T2
R1
-
+
CTR (20) DATA
TERMINAL READY
DSRS (24) DATA
6
-
+
14
TD (2) TRANSMIT DATA
7
RTS (4) REQUEST TO SEND
13
RD (3) RECEIVE DATA
8
CTS (5) CLEAR TO SEND
SIGNAL GROUND (7)15
SIGNALING RATE
SELECT
RS-232
INPUTS AND OUTPUTS
FIGURE 7. SIMPLE DUPLEX RS-232 PORT WITH CTS/RTS HANDSHAKING
6
Page 7
HIN202A, HIN232A
INPUTS
OUTPUTS
TTL/CMOS
INPUTS
OUTPUTS
TTL/CMOS
C1
0.1µF
C1
0.1µF
DSRS
TD
RTS
RD
CTS
0.2µF
DTR
DCD
R1
C4
+
R1
R1
T2
T2
4
+
C2
5
0.1µF
-
14
TD (2) TRANSMIT DATA
7
RTS (4) REQUEST TO SEND
13
RD (3) RECEIVE DATA
8
CTS (5) CLEAR TO SEND
15
V
16
26
2
CC
-
CC
+5V
RS-232
INPUTS AND OUTPUTS
C3
+
0.2µF
V
16
4
+
C2
5
0.1µF
-
14
DTR (20) DATA TERMINAL READY
7
DSRS (24) DATA SIGNALING RATE SELECT
13
DCD (8) DATA CARRIER DETECT
8
R1 (22) RING INDICATOR
1
+
+
HIN232A
3
-
-
10
-
10
11
12
11
12
9
1
3
9
T1
R2
V- V +
6
HIN232A
T1
R2
FIGURE 8. COMBINING TWO HIN232As FOR 4 PAIRS OF RS-232 INPUTS AND OUTPUTS
Typical Performance Curves
12
10
8
6
4
V- SUPPLY VOLTAGE (V)
2
0
3.54.04.56.0
V
CC
FIGURE 9. V- SUPPLY VOLTAGE vs V
SIGNAL GROUND (7)15
12
0.1µF
5.05.53.0
CC
10
8
6
4
SUPPLY VOLTAGE (|V|)
TA = 25oC
2
TRANSMITTER OUTPUTS
OPEN CIRCUIT
0
V- (VCC = 4V)
|I
LOAD
V+ (VCC = 5V)
| (mA)
FIGURE 10. V+, V- OUTPUT VOLTAGE vs LOAD
V+ (VCC = 4V)
V- (VCC = 5V)
302520151050
35
7
Page 8
Die Characteristics
DIE DIMENSIONS
160 mils x 140 mils
METALLIZATION
Type: Al
Thickness: 10k
SUBSTRATE POTENTIAL
V+
PAS SIVATIO N
Type: Nitride over Silox
Nitride Thickness: 8k
Silox Thickness: 7kÅ
TRANSISTOR COUNT
238
PROCESS
CMOS Metal Gate
ű1kÅ
Å
HIN202A, HIN232A
8
Page 9
Dual-In-Line Plastic Packages (PDIP)
HIN202A, HIN232A
N
D1
-C-
E1
-B-
A1
A2
E
A
L
e
C
C
L
e
A
C
e
B
INDEX
AREA
BASE
PLANE
SEATING
PLANE
D1
B1
12 3N/2
-AD
e
B
0.010 (0.25)C AMBS
NOTES:
1. Controlling Dimensions: INCH. In case of conflict between English and
Metric dimensions, the inch dimensions control.
2. Dimensioning and tolerancing per ANSI Y14.5M-1982.
3. Symbols are defined in the “MO Series Symbol List” in Section 2.2 of
Publication No. 95.
4. Dimensions A, A1 and L are measured with the package seated in JEDEC seating plane gauge GS-3.
5. D, D1, and E1 dimensions do not include mold flash or protrusions.
Mold flash or protrusions shall not exceed 0.010 inch (0.25mm).
6. E andare measured with the leads constrained to be perpendic-
7. e
e
A
ular to datum .
and eC are measured at the lead tips with the leads unconstrained.
B
e
must be zero or greater.
C
-C-
8. B1 maximum dimensions do not include dambar protrusions. Dambar
protrusions shall not exceed 0.010 inch (0.25mm).
9. N is the maximum number of terminal positions.
10. Corner leads (1, N, N/2 and N/2 + 1) for E8.3, E16.3, E18.3, E28.3,
E42.6 will have a B1 dimension of 0.030 - 0.045 inch (0.76 - 1.14mm).
E16.3 (JEDEC MS-001-BB ISSUE D)
16 LEAD DUAL-IN-LINE PLASTIC PACKAGE
INCHESMILLIMETERS
SYMBOL
A-0.210-5.334
A10.015-0.39-4
A20.1150.1952.934.95-
B0.0140.0220.3560.558-
B10.0450.0701.151.778, 10
C0.0080.0140.2040.355-
D0.7350.77518.6619.685
D10.005-0.13-5
E0.3000.3257.628.256
E10.2400.2806.107.115
e0.100 BSC2.54 BSC-
e
A
e
B
0.300 BSC7.62 BSC6
-0.430-10.927
L0.1150.1502.933.814
N16169
NOTESMINMAXMINMAX
Rev. 0 12/93
9
Page 10
HIN202A, HIN232A
Small Outline Plastic Packages (SOIC)
N
INDEX
AREA
123
SEATING PLANE
-AD
e
B
0.25(0.010)C AMBS
M
E
-B-
A
-C-
0.25(0.010)BMM
H
α
µ
A1
0.10(0.004)
L
h x 45
o
C
NOTES:
1. Symbols are defined in the “MO Series Symbol List” in Section 2.2 of
Publication Number 95.
2. Dimensioning and tolerancing per ANSI Y14.5M-1982.
3. Dimension “D” does not include mold flash, protrusions or gate burrs.
Mold flash, protrusion and gate burrs shall not exceed 0.15mm (0.006
inch) per side.
4. Dimension “E” does not include interlead flash or protrusions. Interlead
flash and protrusions shall not exceed 0.25mm (0.010 inch) per side.
5. The chamfer on the body is optional. If it is not present, a visual index
feature must be located within the crosshatched area.
6. “L” is the length of terminal for soldering to a substrate.
7. “N” is the number of terminal positions.
8. Terminal numbers are shown for reference only.
9. The lead width “B”, as measured 0.36mm (0.014 inch) or greater above
the seating plane, shall not exceed a maximum value of 0.61mm (0.024
inch)
10. Controlling dimension: MILLIMETER. Converted inch dimensions are
not necessarily exact.
M16.3 (JEDEC MS-013-AA ISSUE C)
16 LEAD WIDE BODY SMALL OUTLINE PLASTIC PACKAGE
INCHESMILLIMETERS
SYMBOL
A0.09260.10432.352.65-
A10.00400.01180.100.30-
B0.0130.02000.330.519
C0.00910.01250.230.32-
D0.39770.413310.1010.503
E0.29140.29927.407.604
e0.050 BSC1.27 BSC-
H0.3940.41910.0010.65-
h0.0100.0290.250.755
L0.0160.0500.401.276
N16167
o
α
0
o
8
o
0
o
8
Rev. 0 12/93
NOTESMINMAXMINMAX
-
10
Page 11
HIN202A, HIN232A
Small Outline Plastic Packages (SOIC)
N
INDEX
AREA
123
-AD
E
-B-
SEATING PLANE
A
-C-
e
B
0.25(0.010)C AMBS
M
NOTES:
1. Symbols are defined in the “MO Series Symbol List” in Section 2.2 of
Publication Number 95.
2. Dimensioning and tolerancing per ANSI Y14.5M-1982.
3. Dimension “D” does not include mold flash, protrusions or gate burrs.
Mold flash, protrusion and gate burrs shall not exceed 0.15mm (0.006
inch) per side.
4. Dimension “E” does not include interlead flash or protrusions. Interlead
flash and protrusions shall not exceed 0.25mm (0.010 inch) per side.
5. The chamfer on the body is optional. If it is not present, a visual index
feature must be located within the crosshatched area.
6. “L” is the length of terminal for soldering to a substrate.
7. “N” is the number of terminal positions.
8. Terminal numbers are shown for reference only.
9. The lead width “B”, as measured 0.36mm (0.014 inch) or greater above
the seating plane, shall not exceed a maximum value of 0.61mm
(0.024 inch).
10. Controlling dimension: MILLIMETER. Converted inch dimensions are
not necessarily exact.
0.25(0.010)BMM
H
α
µ
A1
0.10(0.004)
L
h x 45
o
C
FN
M16.15 (JEDEC MS-012-AC ISSUE C)
16 LEAD NARROW BODY SMALL OUTLINE PLASTIC
PACKAGE
INCHESMILLIMETERS
SYMBOL
A0.05320.06881.351.75-
A10.00400.00980.100.25-
B0.0130.0200.330.519
C0.00750.00980.190.25-
D0.38590.39379.8010.003
E0.14970.15743.804.004
e0.050 BSC1.27 BSC-
H0.22840.24405.806.20-
h0.00990.01960.250.505
L0.0160.0500.401.276
N16167
o
α
0
o
8
o
0
o
8
Rev. 0 12/93
NOTESMINMAXMINMAX
-
All Intersil products are manufactured, assembled and tested utilizing ISO9000 quality systems.
Intersil Corporation’s quality certifications can be viewed at website www.intersil.com/design/quality
Intersil products are sold by description only. Intersil Corporation reserves the right to make changes in circuit design and/or specifications at any time without notice.
Accordingly, the reader is cautioned to verify that data sheets are current before placing orders. Information furnished by Intersil is believed to be accurate and reliable. However, no responsibility is assumed by Intersil or its subsidiaries for its use; nor for any infringements of patents or other rights of third parties which may result from its use. No
license is granted by implication or otherwise under any patent or patent rights of Intersil or its subsidiaries.
For information regarding Intersil Corporation and its products, see web site www.intersil.com
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