DS34C87T_02 NSC | Alldatasheet
Document overview
- Manufacturer or author: Provided By ALLDATASHEET.COM(FREE DATASHEET DOWNLOAD SITE)
- PDF pages: 8
Technical content
Features
n Typical propagation delays: 6 ns n Typical output skew: 0.5 ns n Outputs won’t load line when VCC =0 V n Meets the requirements of EIA standard RS-422 n Operation from single 5V supply n TRI-STATE outputs for connection to system buses n Low quiescent current n Available in surface mount Connection and Logic Diagrams Dual-In-Line Package 00857601 See Pin Description Table for details Top View Order Number DS34C87TM or DS34C87TN See NS Package Number M16A or N16E 00857602 Truth Table Input Control Non-Inverting Inverting Input Output Output HH H L LH L H XL Z Z L = Low logic state H = High logic state X = Irrelevant Z = TRI-STATE (high performance) April 2002 DS34C87T CMOS Quad TRI-STATE Differential Line Driver © 2002 National Semiconductor Corporation DS008576 www.national.com
Absolute Maximum Ratings(Notes 1, If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. Supply Voltage (V CC ) −0.5 to 7.0V DC Voltage (VIN) −1.5 to V CC +1.5V DC Output Voltage (VOUT ) −0.5 to 7V Clamp Diode Current (IIK ,IOK ) ±20 mA DC Output Current, per pin (I OUT ) ±150 mA DC V CC or GND Current (ICC ) ±150 mA Storage Temperature Range (T STG ) −65˚C to +150˚C Maximum Power Dissipation (PD ) @ 25˚C (Note Plastic “N” Package 1736 mW Lead Temperature (TL) (Soldering 4 sec) 260˚C This device does not meet 2000V ESD rating.(Note 12) Operating Conditions Min Max Units Supply Voltage (VCC ) 4.50 5.50 V DC Input or Output Voltage (VIN,V OUT )0V CC V Operating Temperature Range (TA) DS34C87T −40 +85 ˚C Input Rise or Fall Times (tr,tf) 500 ns VCC =5 V ±10% (unless otherwise specified) Symbol Parameter Conditions Min Typ Max Units VIH High Level Input 2.0 V Voltage V IL Low Level Input 0.8 V Voltage VOH High Level Output V IN =V IH or VIL, 2.5 3.4 V Voltage I OUT = −20 mA VOL Low Level Output V IN =V IH or VIL, 0.3 0.5 V Voltage I OUT =4 8m A VT Differential Output R L = 100 Ω 2.0 3.1 V Voltage (Note 5) |VT|–| VT| Difference In R L = 100 Ω 0.4 V Differential Output (Note 5) VOS Common Mode R L = 100 Ω 2.0 3.0 V Output Voltage (Note 5) |VOS –V OS | Difference In R L = 100 Ω 0.4 V Common Mode Output (Note 5) IIN Input Current V IN =V CC , GND, VIH,o rVIL ±1.0 µA ICC Quiescent Supply I OUT = 0 µA, Current V IN =V CC or GND 200 500 µA V IN = 2.4V or 0.5V (Note 6) 0.8 2.0 mA IOZ TRI-STATE ™ Output V OUT =V CC or GND ±0.5 ±5.0 µA Leakage Current Control = V IL ISC Output Short V IN =V CC or GND −30 −150 mA Circuit Current (Notes 5, 7) IOFF Power Off Output V CC =0 V V OUT = 6V 100 µA Leakage Current (Note 5) V OUT = −0.25V −100 µA 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 device should be operated at these limits. The table of “Electrical Characteristics” provide conditions for actual device operation. Note 2:Unless otherwise specified, all voltages are referenced to ground. All currents into device pins are positive; all currents out of device pins are negative. Note 3:Ratings apply to ambient temperature at 25˚C. Above this temperature derate N Package 13.89 mW/˚C, and M Package 9.80 mW/˚C. Note 4:Unless otherwise specified, min/max limits apply across the −40˚C to 85˚C temperature range. All typicals are given for VCC = 5V and TA = 25˚C. Note 5:See EIA Specification RS-422 for exact test conditions. DS34C87T www.national.com 2
Note 6: Measured per input. All other inputs at VCC or GND. Note 7:This is the current sourced when a high output is shorted to ground. Only one output at a time should be shorted. Switching Characteristics(Note 4) VCC =5 V ±10%, tr,tf≤ 6n s(Figures 1, 2, 3, 4) Symbol Parameter Conditions Min Typ Max Units tPLH ,tPHL Propagation Delay S1 Open 6 11 ns Input to Output Skew (Note 8) S1 Open 0.5 3 ns t TLH ,tTHL Differential Output Rise S1 Open 6 10 ns And Fall Times t PZH Output Enable Time S1 Closed 12 25 ns tPZL Output Enable Time S1 Closed 13 26 ns tPHZ Output Disable Time (Note 9) S1 Closed 4 8 ns tPLZ Output Disable Time (Note 9) S1 Closed 6 12 ns C PD Power Dissipation 100 pF Capacitance (Note 10) C IN Input Capacitance 6 pF Note 8:Skew is defined as the difference in propagation delays between complementary outputs at the 50% point. Note 9:Output disable time is the delay from the control input being switched to the output transistors turning off. The actual disable times are less than indicated due to the delay added by the RC time constant of the load. Note 10:C PD determines the no load dynamic power consumption, PD =C PD V2C Cf+I CC VCC , and the no load dynamic current consumption, IS =C PD VCC f +ICC . Comparison Table of Switching Characteristics into “LS-Type” Load(Note 11) VCC = 5V, TA = +25˚C, tr ≤ 6 ns, tf ≤ 6n s(Figures 4, 5, 6, 7, 8, 9) Symbol Parameter Conditions DS34C87 DS3487 Units Typ Max Typ Max tPLH ,tPHL Propagation Delay 6 10 10 15 ns Input to Output Skew (Note 8) 1.5 2.0 ns t THL ,tTLH Differential Output Rise 4 7 10 15 ns and Fall Times t PHZ Output Disable Time C L = 50 pF, RL = 200Ω , 8 11 17 25 ns (Note 9) S1 Closed, S2 Closed tPLZ Output Disable Time C L = 50 pF, RL = 200Ω , 7 10 15 25 ns (Note 9) S1 Closed, S2 Closed tPZH Output Enable Time C L = 50 pF, RL = ∞ , 1 11 91 12 5 n s S1 Open, S2 Closed tPZL Output Enable Time C L = 50 pF, RL = 200Ω , 1 42 11 52 5 n s S1 Closed, S2 Open Note 11:This table is provided for comparison purposes only. The values in this table for the DS34C87 reflect the performance of the device but are not tested or guaranteed. Note 12: ESD Rating: HBM (1.5 kΩ , 100 pF) Inputs ≥ 1500V Outputs ≥ 1000V EIAJ (0 Ω , 200 pF) All Pins≥ 350V DS34C87T www.national.com3
(DIP or SOP package) Pin Name Function
1 INPUT A Channe l A - TTL/CMOS input
2 OUTPU T A - True True Output for Channel A,
3 OUTPU T A - Inverting Inverting Output for Channel A,
4 A/B CONTROL Enable Pin for Channels A and B,
Active High, TTL/CMOS Levels
5 OUTPU T B - Inverting Inverting Output for Channel B,
6 OUTPU T B - True True Output for Channel B,
7 INPUT B Channe l B - TTL/CMOS input
8 GND Ground Pin (0 V)
9 INPUT C Channe l C - TTL/CMOS input
10 OUTPU T C - True True Output for Channel C,
11 OUTPU T C - Inverting Inverting Output for Channel C,
12 C/D CONTROL Enable Pin for Channels C and D,
Active High, TTL/CMOS Levels
13 OUTPU T D - Inverting Inverting Output for Channel D,
14 OUTPU T D - True True Output for Channel D,
15 INPUT D Channe l D - TTL/CMOS input
CC Power Supply Pin, 5.0V typical DS34C87T www.national.com 6
Physical Dimensionsinches (millimeters) unless otherwise noted 16-Lead Molded Package Small Outline (M) Order Number DS34C87TM 16-Lead Molded Dual-In-Line Package (N) Order Number DS34C87TN DS34C87T www.national.com7
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. 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 Corporation Americas Email: support@nsc.com National Semiconductor Europe Fax: +49 (0) 180-530 85 86 Email: europe.support@nsc.com Deutsch Tel: +49 (0) 69 9508 6208 English Tel: +44 (0) 870 24 0 2171 Français Tel: +33 (0) 1 41 91 8790 National Semiconductor Asia Pacific Customer Response Group Tel: 65-2544466 Fax: 65-2504466 Email: ap.support@nsc.com National Semiconductor Japan Ltd. Tel: 81-3-5639-7560 Fax: 81-3-5639-7507 www.national.com DS34C87T CMOS Quad TRI-STATE Differential Line Driver 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.