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DS14196 EIA/TIA-232 5 Driver x 3 Receiver
April 1999
DS14196 EIA/TIA-232 5 Driver x 3 Receiver
General Description
The DS14196 is a five driver, three receiver device which conforms to the EIA/TIA-232-E and the ITU-T V.28 standards. The flow-through pinout facilitates simple non-crossover board layout. The DS14196 provides a peripheral side one-chip solution for the common 9-pin serial RS-232 interface between data terminals and data communications equipment. The DS14196 offers optimum performance when used with the DS14185 3 x 5 Driver/Receiver, a host side one-chip solution for the common 9-pin serial RS-232 interface between data terminals and data communications equipment.
Features
n n n n n n n n Replaces two 1488s and one 1489 Conforms to EIA/TIA-232-E and ITU-T V.28 5 drivers and 3 receivers Flow-through pinout Failsafe receiver outputs high when inputs open 20-pin wide SOIC package LapLink (R) compatible -- 230.4 kbps data rate Pin compatible with: SN75196, GD75323
Connection Diagram
SOP
Functional Diagram
DS012613-1
Order Number DS14196WM See NS Package Number M20B
DS012613-2
LapLink (R) is a registered trademark of Travelling Software.
(c) 1999 National Semiconductor Corporation
DS012613
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Absolute Maximum Ratings (Note 1)
If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. Supply Voltage (VCC) +7V +15V Supply Voltage (V+) -15V Supply Voltage (V-) Driver Input Voltage 0V to VCC 15V Driver Output Voltage (Power Off) 25V Receiver Input Voltage 0V to VCC Receiver Output Voltage (ROUT) Maximum Power Package Dissipation @ +25C M Package 1524 mW Derate M Package 12.2 mW/C above 25C
Storage Temperature Range -65C to +150C Lead Temperature Range (Soldering, 4 sec.) +260C ESD Ratings (HBM. 1.5 k, 100 pF) 1.5 kV
Recommended Operating Conditons
Supply Voltage (VCC) Supply Voltage (V+) Supply Voltage (V-) Operating Free Air Temperature (TA) Min +4.75 +9.0 -13.2 0 Nom +5.0 +12.0 -12.0 +25 Max +5.25 +13.2 -9.0 +70 Units V V V C
Electrical Characteristics(Note 2) (Note 3) Over recommended operating supply and temperature ranges unless otherwise specified
Symbol ICC I+
-
Parameter VCC Supply Current V+ Supply Current
-
Conditions No Load, All Inputs at +5V No Load, All Driver Inputs at 0.8V or +2V. All Receiver Inputs at 0.8V or 2.4V. V+ = +9V, V- = -9V V+ = +13.2V, V- = -13.2V V+ = +9V, V- = -9V V+ = +13.2V, V- = -13.2V
Min
Typ 13 16 23 -18 -25
Max 22 26 36 -26 -36
Units mA mA mA mA mA V
DEVICE CHARACTERISTICS
I
V Supply Current
DRIVER CHARACTERISTICS VIH VIL IIH IIL VOH High Level Input Voltage Low Level Input Voltage High Level Input Current Low Level Input Current High Level Output Voltage VIN = 5V VIN = 0V RL = 3 k, VIN = 0.8V, V+ = +9V, V- = -9V RL = 3 k, VIN = 0.8V, V+ = +12V, V- = -12V RL = 7 k, VIN = 0.8V, V+ = +13.2V, V- = -13.2V RL = 3 k, VIN = 2V, V+ = +9V, V- = -9V RL = 3 k, VIN = 2V, V+ = +12V, V- = -12V RL = 7 k, VIN = 2V, V+ = +13.2V, V- = -13.2V VOUT = 0V, VIN = 0.8V VOUT = 0V, VIN = 2.0V -2V VOUT +2V, V+ = V- = VCC = 0V -2V VOUT +2V, V+ = V- = VCC = Open Circuit VOUT 0.4V, IO = 3.2 mA VOUT 2.5V, IO = -0.5 mA VIN = 3V to 15V VIN = +15V VIN = +3V VIN = -15V VIN = -3V 0.7 3.0 2.1 0.43 -2.1 -0.43 -1.1 6 8 10 7 9 11.5 -7 -10 -11.5 -6 6 300 300 1.85 1.0 3.8 4.0 0.7 -4.0 -0.7 7.0 5.0 1.0 -5.0 -1.0 2.4 -12 12 -6 -8 -10 -18 18 2.0 0.8 10 -1.5 V A mA V V V V V V mA mA V V k mA mA mA mA
VOL
Low Level Output Voltage
IOS+ IOS- RO
Output High Short Circuit Current (Note 4) Output Low Short Circuit Current (Note 4) Output Resistance
RECEIVER CHARACTERISTICS VTH VTL RIN IIN Input High Threshold (Recognized as a High Signal) Input Low Threshold (Recognized as a Low Signal) Input Resistance Input Current
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Electrical Characteristics(Note 2) (Note 3)
Symbol VOH Parameter High Level Output Voltage (Note 7)
(Continued)
Over recommended operating supply and temperature ranges unless otherwise specified Conditions IOH = -0.5 mA, VIN = -3V IOH = -10 A, VIN = -3V IOH = -0.5 mA, VIN = Open Circuit IOH = -10 A, VIN = Open Circuit IOL = 3.2 mA, VIN = +3V VOUT = 0V, VIN = 0V (Note 4) Min 2.6 4.0 2.6 4.0 -1.7 Typ 4.0 4.9 4.0 4.9 0.2 -2.7 0.4 -4 Max Units V V V V V mA RECEIVER CHARACTERISTICS
VOL IOSR
Low Level Output Voltage Short Circuit Current
Switching Characteristics (Note 3) (Note 5) (Note 6)
TA = 25C Symbol DRIVER CHARACTERISTICS tPHL tPLH tr, tf tPHL tPLH tr tf Propagation Delay High to Low Propagation Delay Low to High Rise/Fall Time (Note 8) Propagation Delay High to Low Propagation Delay Low to High Rise Time Fall Time RL = 1.5 k, CL = 15 pF (includes fixture plus probe), (Figures 3, 4) RL = 3 k, CL = 50 pF (Figures 1, 2) 60 240 40 150 240 40 40 350 350 175 100 350 350 ns ns ns ns ns ns ns Parameter Conditions Min Typ Max Units
RECEIVER CHARACTERISTICS
Note 1: Absolute Maximum Ratings are those values beyond which the safety of the device cannot be guaranteed. They are not meant to imply that the devices should be operated at these limits. The table of Electrical Characteristics specifies conditions of device operation. Note 2: Current into device pins is defined as positive. Current out of the device pins is defined as negative. All voltages are referenced to ground unless otherwise specified. For current, minimum and maximum values are specified as an absolute value and the sign is used to indicate direction. For voltage logic levels, the more positive value is designated as maximum. For example, if -6V is a maximum, the typical value -6.8V is more negative. Note 3: All typicals are given for: VCC = +5V, V+ = +12V, V- = -12V, TA = +25C. Note 4: Only one driver output shorted at a time. Note 5: Generator characteristics for driver input: f = 64 kHz (128 kbps), tr = tf < 10 ns, VIH = 3V, VIL = 0V, duty cycle = 50%. Note 6: Generator characteristics for receiver input: f = 64 kHz (128 kbps), tr = tf = 200 ns, VIH = 3V, VIL = -3V, duty cycle = 50%. Note 7: If receiver inputs are unconnected, receiver output is a logic high. Note 8: Refer to typical curves. Driver output slew rate is measured from the +3V to the -3V level on the output waveform. Inputs not under test are connected to VCC or GND. Slew rate is determined by load capacitance. To comply with a 30 V/s maximum slew rate, a minimum load capacitance of 390 pF is recommended.
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Parameter Measurement Information
DS012613-3
FIGURE 1. Driver Propagation Delay and Transition Time Test Circuit (Note 5)
DS012613-5
FIGURE 3. Receiver Propagation Delay and Transition Time Test Circuit (Note 6)
DS012613-4
FIGURE 2. Driver Propagation Delay and Transition Time Waveforms Slew Rate (SR) = 6V/(tr or tf)
DS012613-6
Pin Descriptions
Pin # 2, 3, 4, 7, 9 12, 14, 17, 18, 19 13, 15, 16 5, 6, 8 10 20 11 1 DIN DOUT RIN ROUT GND V+ V- VCC Pin Name
FIGURE 4. Receiver Propagation Delay and Transition Time Waveform
Description Driver Input Pins Driver Output Pins, RS-232 Levels Receiver Input Pins, RS-232 Levels Receiver Output Pins Ground Positive Power Supply Pin (+9.0 V+ +13.2) Negative Power Supply Pin (-9.0 V- -13.2) Positive Power Supply Pin (+5V 5%)
Applications Information
In a typical Data Terminal Equipment (DTE) to Data Circuit-Terminating Equipment (DCE) 9-pin de-facto interface implementation, 2 data lines and 6 control lines are required. The data lines are TXD and RXD. The control lines are RTS, DTR, DSR, DCD, CTS and RI. The DS14196 is a 5 x 3 Driver/Receiver and offers a single chip solutuion for this DTE interface. As shown in Figure 5, this interface allows for direct flow-thru interconnect. For a more conservative design, the user may wish to insert ground traces between the signal lines to minimize cross talk. FAILSAFE RECEIVER OUTPUTS The DS14196 features failsafe receiver outputs. In failsafe mode, if the receiver input becomes zero or an open-circuit, the receiver output is pulled to a high level. LapLink COMPATIBILITY The DS14196 can easily provide 128 kbps data rate under maximum driver load conditions of CL = 2500 pF and RL = 3 k, while power supplies are: VCC = +4.75V, V+ = 10.8V, V- = -10.8V MOUSE DRIVING A typical mouse can be powered from the drivers. Two driver outputs connected in parallel and set to VOH can be used to supply power to the V+ pin of the mouse. The third driver output is set to VOL to sink the current from the V-terminal. Refer to typical curves of VOUT/IOUT.Typical mouse specifications are: 10 mA at +6V 5 mA at -6V
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Applications Information
(Continued)
DS012613-7
FIGURE 5. Typical DCE Application
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Typical Performance Characteristics
Driver Output Slew Rate between +3V and -3V vs Load Capacitance Conditions: VCC = 5V, RL = 5 k, TA = 25C, fIN = 64 kHz Square Wave Driver Output Voltage vs Frequency and CL Conditions: VCC = 5V, RL = 5 k, TA = 25C
DS012613-9
DS012613-8
Driver Output Current vs Output Voltage
DS012613-10
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DS14196 EIA/TIA-232 5 Driver x 3 Receiver
Physical Dimensions
inches (millimeters) unless otherwise noted
20-Lead (0.300" Wide) Molded Small Outline Package, JEDEC Order Number DS14196WM NS Package Number M20B
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