View NSC04598_993600.PDF datasheet online --- IC-ON-LINE

Datasheet File OCR Text:

DS14C232 Low Power +5V Powered TIA/EIA-232 Dual Driver/Receiver
May 1998
DS14C232 Low Power +5V Powered TIA/EIA-232 Dual Driver/Receiver
General Description
The DS14C232 is a low power dual driver/receiver featuring an onboard DC to DC converter, eliminating the need for 12V power supplies. The device only requires a +5V power supply. ICC is specified at 3.0 mA maximum, making the device ideal for battery and power conscious applications. The drivers' slew rate is set internally and the receivers feature internal noise filtering, eliminating the need for external slew rate and filter capacitors. The device is designed to interface data terminal equipment (DTE) with data circuit-terminating equipment (DCE). The driver inputs and receiver outputs are TTL and CMOS compatible. DS14C232C driver outputs and receiver inputs meet TIA/EIA-232-E (RS-232) and CCITT V.28 standards.
Features
n Pin compatible with industry standard MAX232, LT1081, ICL232 and TSC232 n Single +5V power supply n Low power -- ICC 3.0 mA maximum n DS14C232C meets TIA/EIA-232-E (RS-232) and CCITT V.28 standards n CMOS technology n Receiver Noise Filter n Package efficiency -- 2 drivers and 2 receivers n Available in Plastic DIP, Narrow and Wide SOIC packages n TIA/EIA-232 compatible extended temperature range option: DS14C232: -55C to +125C
Connection Diagram
Functional Diagram
DS010744-1
Order Number DS14C232CN, or DS14C232CM, See NS Package Number N16E, or M16A
DS010744-2
(c) 1999 National Semiconductor Corporation
DS010744
www.national.com
Absolute Maximum Ratings (Note 1)
Specifications for the 883 version of this product are listed separately on the following pages. Supply Voltage, VCC V+ Pin V- Pin Driver Input Voltage Driver Output Voltage -0.3V (VCC - 0.3)V to +0.3V to -0.3V to (VCC + (V+ + 0.3V) to to 6V +14V -14V 0.3V) (V- - 0.3V)
Short Circuit Duration, DOUT Storage Temp. Range Lead Temp. (Soldering, 4 sec.) ESD Rating (HBM, 1.5 k, 100 pF)
Continuous -65C to +150C +260C 2.5 kV
25V Receiver Input Voltage Receiver Output Voltage -0.3V to (VCC + 0.3V) Junction Temperature +150C Maximum Package Power Dissipation @ 25C (Note 6) N Package 1698 mW M Package 1156 mW
Recommended Operating Conditions
Supply Voltage, VCC Operating Free Air Temp. (TA) DS14C232C Min 4.5 0 Max 5.5 +70 Units V C
Electrical Characteristics (Note 2)
Over recommended operating conditions, unless otherwise specified Symbol V+ V- ICC VIH VIL IIH IIL VOH VOL IOS+ IOS- RO Parameter Positive Power Supply Negative Power Supply Supply (VCC) Current High Level Input Voltage Low Level Input Voltage High Level Input Current Low Level Input Current High Level Output Voltage Low Level Output Voltage Output High Short Circuit Current Output Low Short Circuit Current Output Resistance VIN 2.0V VIN 0.8V RL = 3 k RL = 3 k VO = 0V, VIN = 0.8V VO = 0V, VIN = 2V -2V VO +2V, VCC = 0V = GND VCC = 5.0V VCC = 5.0V 10% VTL VHY RIN IIN Input Low Threshold Voltage Hysteresis Input Resistance Input Current VIN = +15V VIN = +3V VIN = -3V VIN = -15V VIN = -3V, IO = -3.2 mA VIN = -3V, IO = -20 A VIN = +3V, IO = +3.2 mA -15V VIN +15V 0.8 0.2 3.0 +2.14 +0.43 -1.0 -5.0 3.5 4.0 (Note 3) Conditions RL = 3 k, C1-C4 = 1.0 F, DIN = 0.8V RL = 3 k, C1-C4 = 1.0 F, DIN = 2.0V No Load 2 GND -10 -10 5.0 -30 5.0 300 8.0 -7.0 -15 11 -5.0 -5.0 30 Min Typ 9.0 -8.5 1.0 3.0 VCC 0.8 +10 +10 Max Units V V mA V V A A V V mA mA DC TO DC CONVERTER CHARACTERISTICS
DRIVER CHARACTERISTICS
RECEIVER CHARACTERISTICS VTH Input High Threshold Voltage 1.9 1.9 1.5 0.4 4.7 +3.75 +0.64 -0.64 -3.75 4.5 4.9 0.15 0.4 1.0 7.0 +5.0 +1.0 -0.43 -2.14 2.4 2.6 V V V V k mA mA mA mA V V V
VOH VOL
High Level Output Voltage Low Level Output Voltage
www.national.com
2
Switching Characteristics
Over recommended operating conditions, unless otherwise specified. Symbol tPLH tPHL tSK SR1 SR2 tPLH tPHL tSK tnw Parameter Propagation Delay Low to High Propagation Delay High to Low Skew |tPLH - tPHL| Output Slew Rate Output Slew Rate Propagation Delay Low to High Propagation Delay High to Low Skew |tPLH - tPHL| Noise Pulse Width Rejected RL = 3 k to 7 k, CL = 50 pF RL = 3 k, CL = 2500 pF Input Pulse Width > 10 s CL = 50 pF (Figures 3, 4) (Figures 3, 4) (Note 7) 4.0 4.5 2.9 2.5 0.4 0.7 6.5 6.5 2.0 0.5 Conditions RL = 3 k CL = 50 pF Min Typ 1.0 1.0 0.1 Max 4.0 4.0 1.0 30 Units s s s V/s V/s s s s s DRIVER CHARACTERISTICS
Figure 1 and Figure 2
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 tables of "Electrical Characteristics" specify conditions for device operation. Note 2: Current into device pins is defined as positive. Current out of device pins is defined as negative. All voltages are referenced to ground unless otherwise specified. Note 3: IOS+ and IOS- values are for one output at a time. If more than one output is shorted simultaneously, the device power dissipation may be exceeded. Note 4: Receiver AC input waveform for test purposes: tr = tf = 200 ns, VIH = 3V, VIL = -3V, f = 30 kHz. Note 5: All typicals are given for VCC = 5.0V. Note 6: Ratings apply to ambient temperature at +25C. Above this temperature derate: N Package 15.6 mW/C, and M Package 10.6 mW/C. Note 7: Slew rate is defined as V/t, measured between 3V level.
3
www.national.com
Absolute Maximum Ratings (Note 1)
For complete Military Product Specifications, refer to the appropriate SMD or MDS. -0.3V to 6V Supply Voltage, VCC (VCC - 0.3)V to +14V V+ Pin +0.3V to -14V V- Pin Driver Input Voltage -0.3V to (VCC + 0.3V) Driver Output Voltage (V+ + 0.3V) to (V- - 0.3V) 25V Receiver Input Voltage Receiver Output Voltage -0.3V to (VCC + 0.3V) Maximum Package Power Dissipation @ 25C (Note 8) J Package 1520 mW E Package 2000 mW
Short Circuit Duration, DOUT Storage Temp. Range Lead Temp. (Soldering, 4 sec.) ESD Rating (HMB, 1.5 k, 100 pF)
Continuous -65C to +150C +260C 2.5 kV
Recommended Operating Conditions
Supply Voltage, VCC Operating Free Air Temp. (TA) DS14C232 Min 4.5 -55 Max 5.5 +125 Units V C
Electrical Characteristics (Note 2)
Over recommended operating conditions, unless otherwise specified Symbol ICC VIH VIL IIH IIL VOH VOL IOS+ IOS- RO Parameter DEVICE CHARACTERISTICS (C1-C4 = 1.0 F) Supply (VCC) Current High Level Input Voltage Low Level Input Voltage High Level Input Current Low Level Input Current High Level Output Voltage Low Level Output Voltage Output High Short Circuit Current Output Low Short Circuit Current Output Resistance VIN 2.0V VIN = 0V RL = 3 k RL = 3 k VO = 0V VO = 0V -2V VO +2V, TA = 25C, VCC = 0V = GND 5.0 -5.0 (Note 3) -25 25 300 No Load 2 0.8 100 100 Conditions Min Max 8.0 Units mA V V A A V V mA mA
DRIVER CHARACTERISTICS
RECEIVER CHARACTERISTICS (C1-C4 = 1.0 F) VTH VTL VHY RIN VOH VOL Input High Threshold Voltage Input Low Threshold Voltage Hysteresis Input Resistance High Level Output Voltage Low Level Output Voltage TA = 25C, +125C TA = -55C VIN = 3V and 15V, TA = 25C IO = -3.2 mA IO = -20 A IO = +3.2 mA 0.2 0.1 0.05 3.0 3.5 4.0 0.4 1.0 1.0 7.0 3.0 V V V V k V V V
Switching Characteristics
Over recommended operating conditions, unless otherwise specified. Symbol Parameter DRIVER CHARACTERISTICS (C1-C4 = 1.0 F) tPLH tPHL tSK Propagation Delay Low to High Propagation Delay High to Low Skew |tPLH - tPHL| (Note 7) 1.5 Conditions Min Max 4.0 4.0 1.0 30 8.0 8.0 2.0
4
Units s s s V/s s s s
RL = 3 k, CL = 50 pF
Figures 1, 2
SR1 Output Slew Rate RL = 3 k to 7 k, CL = 2500 pF RECEIVER CHARACTERISTICS (C1-C4 = 1.0 F) tPLH tPHL tSK Propagation Delay Low to High Propagation Delay High to Low Skew |tPLH - tPHL| Input Pulse Width > 10 s CL = 50 pF (Figures 3, 4)
www.national.com
Switching Characteristics Connection Diagrams
(Continued)
Note 8: Ratings apply to ambient temperature at +25C. Above this temperature derate: J Package 12.2 mW/C and E Package 13.3 mW/C.
J Package 16-Lead Dual-In-line Package
E Package 20-Lead Ceramic Leadless Chip Carrier
DS010744-10
DS010744-1
For Complete Military Product Specifications See MDS or SMD. Order Number DS14C232J/883 or DS14C232E/883 See NS Package Number E20A or J16A
Parameter Measurement Information
DS010744-3
FIGURE 1. Driver Load Circuit
DS010744-4
FIGURE 2. Driver Switching Waveform
5
www.national.com
Parameter Measurement Information
(Continued)
DS010744-5
FIGURE 3. Receiver Load Circuit
DS010744-6
FIGURE 4. Receiver Propagation Delays and Noise Rejection (Note 4)
Pin Descriptions
VCC (Pin 16) Power supply pin for the device, +5V (10%). V+ (Pin 2) Positive supply for TIA/EIA-232-E drivers. Recommended external capacitor: C4-1.0 F (6.3V). Capacitor value should be larger than 1 F. This supply is not intended to be loaded externally. V- (Pin 6) Negative supply for TIA/EIA-232-E drivers. Recommended external capacitor: C3-1.0 F (16V). Capacitor value should be larger than 1 F. This supply is not intended to be loaded externally. C1+, C1- (Pins 1, 3) External capacitor connection pins. Recommended capacitor: 1.0 F (6.3V). Capacitor value should be larger than 1 F. C2+, C2- (Pins 4, 5) External capacitor connection pins. Recommended capacitor: 1.0 F (16V). Capacitor value should be greater than 1 F. DIN1, DIN2 (Pins 11, 10) Driver input pins are TTL/CMOS compatible. Inputs of unused drivers may be left open, an internal active pull-up resistor (500 k minimum, typically 5 M) pulls input HIGH. Output will be LOW for open inputs. DOUT1, DOUT2 (Pins 14, 7) Driver output pins conform to TIA/EIA-232-E levels. RIN1, RIN2 (Pins 13, 8) Receiver input pins accept TIA/EIA-232-E input voltages (25V). Receivers feature a noise filter and guaranteed hysteresis of 100 mV. Unused receiver input pins may be left open. Internal input resistor 4.7 k pulls input low, providing a failsafe high output. ROUT1, ROUT2 (Pins 12, 9) Receiver output pins are TTL/CMOS compatible. Receiver output HIGH voltage is specified for both CMOS and TTL load conditions. GND (Pin 15) Ground Pin.
www.national.com
6
Typical Application Information
Application of DS14C232 and INS8250
DS010744-7
Typical Connection Diagram
DS010744-9
7
www.national.com
Typical Performance Characteristics
DRIVER VOH & VOL vs POWER SUPPLY VOLTAGE
DS010744-11
DS010744-12
VCC = 5.0V, RL = 3 k, CL = 15 pF (includes jig and probe capacitance), CP = 1 F
DS010744-13
S1 2.0V 0.8V
VO VOL VOH
www.national.com
8
Typical Performance Characteristics
DRIVER SLEW RATE vs POWER SUPPLY VOLTAGE & LOAD CAPACITANCE
(Continued)
DS010744-14
DS010744-15
Ta = 25C, RL = 5 k, CP = 1 F, = 30 KHz
DS010744-16
SR = 6V/t1 or 6V/t2, whichever is greater.
9
www.national.com
Physical Dimensions
inches (millimeters) unless otherwise noted
Order Number DS14C232E/883 NS Package Number E20A
Order Number DS14C232J/883 NS Package Number J16A
www.national.com
10
Physical Dimensions
inches (millimeters) unless otherwise noted (Continued)
Order Number DS14C232CM NS Package Number M16A
Order Number DS14C232CN NS Package Number N16E
11
www.national.com
DS14C232 Low Power +5V Powered TIA/EIA-232 Dual Driver/Receiver
Notes
LIFE SUPPORT POLICY NATIONAL'S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT AND GENERAL COUNSEL OF NATIONAL SEMICONDUCTOR CORPORATION. As used herein: 1. Life support devices or systems are devices or systems which, (a) are intended for surgical implant into the body, or (b) support or sustain life, and whose failure to perform when properly used in accordance with instructions for use provided in the labeling, can be reasonably expected to result in a significant injury to the user.
National Semiconductor Corporation Americas Tel: 1-800-272-9959 Fax: 1-800-737-7018 Email: support@nsc.com www.national.com National Semiconductor Europe Fax: +49 (0) 1 80-530 85 86 Email: europe.support@nsc.com Deutsch Tel: +49 (0) 1 80-530 85 85 English Tel: +49 (0) 1 80-532 78 32 Francais Tel: +49 (0) 1 80-532 93 58 Italiano Tel: +49 (0) 1 80-534 16 80
2. A critical component is any component of a life support device or system whose failure to perform can be reasonably expected to cause the failure of the life support device or system, or to affect its safety or effectiveness.
National Semiconductor Asia Pacific Customer Response Group Tel: 65-2544466 Fax: 65-2504466 Email: sea.support@nsc.com
National Semiconductor Japan Ltd. Tel: 81-3-5639-7560 Fax: 81-3-5639-7507
National does not assume any responsibility for use of any circuitry described, no circuit patent licenses are implied and National reserves the right at any time without notice to change said circuitry and specifications.

▲Up To Search▲

Price & Availability of NSC04598

	To Download NSC04598 Datasheet File
If you can't view the Datasheet, Please click here to try to view without PDF Reader .