DatasheetsPDF.com

DS1489 Dataheets PDF



Part Number DS1489
Manufacturers National Semiconductor
Logo National Semiconductor
Description Quad Line Driver
Datasheet DS1489 DatasheetDS1489 Datasheet (PDF)

DS1489/DS1489A Quad Line Receiver July 2002 DS1489/DS1489A Quad Line Receiver General Description The DS1489/DS1489A are quad line receivers designed to interface data terminal equipment with data communications equipment. They are constructed on a single monolithic silicon chip. These devices satisfy the specifications of EIA Standard RS-232D. The DS1489/DS1489A meet and exceed the specifications of MC1489/MC1489A and are pin-for-pin replacements. Features n n n n n Four separate receivers p.

  DS1489   DS1489



Document
DS1489/DS1489A Quad Line Receiver July 2002 DS1489/DS1489A Quad Line Receiver General Description The DS1489/DS1489A are quad line receivers designed to interface data terminal equipment with data communications equipment. They are constructed on a single monolithic silicon chip. These devices satisfy the specifications of EIA Standard RS-232D. The DS1489/DS1489A meet and exceed the specifications of MC1489/MC1489A and are pin-for-pin replacements. Features n n n n n Four separate receivers per package Programmable threshold Built-in input threshold hysteresis “Fail safe” operating mode: high output for open inputs Inputs withstand ± 30V Schematic and Connection Diagrams www.DataSheet4U.com 00577701 (1⁄4 of unit shown) DS1489: RF = 10k DS1489A: RF = 2k Dual-In-Line or Small-Out Line Package 00577702 Top View Order Number DS1489M, DS1489MX, DS1489N, DS1489AM, DS1489AMX or DS1489AN See NS Package Number M14A or N14A © 2002 National Semiconductor Corporation DS005777 www.national.com DS1489/DS1489A AC Test Circuit and Voltage Waveforms 00577703 www.DataSheet4U.com 00577704 FIGURE 1. www.national.com 2 DS1489/DS1489A Absolute Maximum Ratings (Note 2) If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. Power Supply Voltage Input Voltage Range Output Load Current Power Dissipation (Note 3) Operating Temperature Range Storage Temperature Range 10V Maximum Power Dissipation (Note 1) at 25˚C Molded DIP Package SO Package Lead Temperature (Soldering, 4 sec.) 1207 mW 1042 mW 260˚C ± 30V 20 mA 1W 0˚C to +75˚C −65˚C to +150˚C Note 1: Derate molded DIP package 9.7 mW/˚C above 25˚C; derate SO package 8.33 mW/˚C above 25˚C. Electrical Characteristics (Notes 3, 4, 5) DS1489/DS1489A: The following apply for VCC = 5.0V ± 1%, 0˚C ≤ TA ≤ +75˚C unless otherwise specified. Symbol VTH Parameter Input High Threshold Voltage VOUT ≤ 0.45V, IOUT = 10 mA Conditions DS1489 DS1489A VOUT ≥ 2.5V, IOUT = −0.5 mA IIN Input Current VIN = +25V VIN = −25V VIN = +3V VIN = −3V VOH VOL ISC ICC Pd Output High Voltage Output Low Voltage Output Short Circuit Current Supply Current Power Dissipation IOUT = −0.5 mA VIN = 0.75V Input = Open VIN = 3.0V, IOUT = 10 mA VIN = 0.75V VIN = 5.0V VIN = 5.0V TA = 25˚C TA = 25˚C TA = 25˚C Min 1.0 0.9 1.75 1.55 0.75 0.65 +3.6 −3.6 +0.43 −0.43 2.6 2.6 +5.6 −5.6 +0.53 −0.53 3.8 3.8 0.33 −3.0 14 70 26 130 5.0 5.0 0.45 1.00 2.00 Typ 1.25 Max 1.5 1.6 2.25 2.40 1.25 1.35 +8.3 −8.3 Units V V V V V V mA mA mA mA V V V mA mA mW www.DataSheet4U.com VTL Input Low Threshold Voltage Switching Characteristics VCC = 5V, TA = 25˚C Symbol tpd1 tpd0 tr tf Parameter Input to Output “High” Propagation Delay Input to Output “Low” Propagation Delay Output Rise Time Output Fall Time RL = 3.9k, (Figure 1) (AC Test Circuit) RL = 390Ω, (Figure 1) (AC Test Circuit) 110 9 175 20 ns ns RL = 390Ω, (Figure 1) (AC Test Circuit) 20 50 ns Conditions RL = 3.9k, (Figure 1) (AC Test Circuit) Min Typ 28 Max 85 Units ns Note 2: “Absolute Maximum Ratings” are those values beyond which the safety of the device cannot be guaranteed. Except for “Operating Temperature Range” they are not meant to imply that the devices should be operated at these limits. The table of “Electrical Characteristics” provides conditions for actual device operation. Note 3: Unless otherwise specified min/max limits apply across the 0˚C to +75˚C temperature range for the DS1489 and DS1489A. Note 4: All currents into device pins shown as positive, out of device pins as negative, all voltages referenced to ground unless otherwise noted. All values shown as max or min on absolute value basis. Note 5: These specifications apply for response control pin = open. 3 www.national.com DS1489/DS1489A Typical Characteristics VCC = 5.0V, TA = +25˚C unless otherwise noted 00577707 00577710 FIGURE 2. Input Current FIGURE 5. Input Threshold Voltage vs Temperature www.DataSheet4U.com 00577708 00577711 FIGURE 3. DS1489 Input Threshold Voltage Adjustment FIGURE 6. Input Threshold vs Power Supply Voltage 00577709 00577712 FIGURE 4. DS1489A Input Threshold Voltage Adjustment FIGURE 7. Noise Rejection vs Capacitance for DS1489A www.national.com 4 DS1489/DS1489A Typical Application Information 00577705 *Optional for noise filtering. Applications Using the Response Control Pin Noise Filter See Figure 7 Threshold Shift See Figures 3, 4 Noise Filter and Threshold Shift See Figures 3, 4, 7 www.DataSheet4U.com 00577713 00577714 00577715 Application of DS1488, DS1489A and UART 00577716 5 www.national.com DS1489/DS1489A Physical Dimensions unless otherwise noted inches (millimeters) www.DataSheet4U.com SO Package (M) Order Number DS1489M, DS1489MX or DS1489AM, DS1489AMX NS Package Number M14A www.national.com 6 DS1489/DS1489A Quad Line Receiver Physical Dimensions inches (millimeters) unless otherwise noted (Continued) www.DataSheet4U.


DS1488 DS1489 DS1489A


@ 2014 :: Datasheetspdf.com :: Semiconductors datasheet search & download site.
(Privacy Policy & Contact)