DS3890 NSC | Alldatasheet

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Y Driver output capacitance less than 5 pF Y 1 volt bus signal reduces power consumption Y Trapezoidal driver waveforms (t r,t f, typically 6 ns) re- duces noise coupling to adjacent lines Y Precise receiver threshold track the bus logic high level to maximize noise immunity in both logic high ahd low states Y Open collector driver output allows wire-or connection Y Advanced low power schottky technology Y Glitch free power up/down protection Y TTL compatible driver and control inputs and receiver output Y BTL compatible Logic and Connection Diagrams DS3890 Octal Trapezoidal Driver TL/F/8700–1 DS3892 Octal TRI-STATE Receiver TL/F/8700–2 Order Numbers DS3892M, DS3890N or DS3892N See NS Package Number M20B or N20A TRI-STATEÉ is a registered trademark of National Semiconductor Corporation.

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 6V Control Input Voltage 5.5V Driver Input and Receiver Output 5.5V Receiver Input and Driver Output 2.5V Storage Temperature Range b65§Ct o a165§C Lead Temperature (Soldering, 4 sec.) 260 §C Recommended Operating Conditions Min Max Units Supply Voltage 4.75 5.25 V Temperature (T A)0 7 0 §C DRIVER AND CONTROL INPUTS Symbol Conditions Min Typ Max Units VIH 2.0 V VIL 0.8 V IIL An V CCeMax V INe0.4V b1 b1.6 mA IIL Dis V CCeMax V INe0.4V b180 b400 mA IIH VCCeMax V INe2.4V 40 mA II VCCeMax V INe5.25V 1 mA VCL VCCeMin I INeb12 mA b0.9 b1.5 V DRIVER OUTPUT VOL VCCeMin R Le18.5X 0.75 1.0 1.2 V IOH VCCeMax V OUTe2V b20 10 100 mA IO VCCe0V V OUTe2V 100 mA IIL VCCeMax V OUTe0.75V b100 b250 mA ICC Low VCCeMax 50 80 mA ICC High 100 mA CONTROL INPUTS Symbol Conditions Min Typ Max Units VIH 2.0 V VIL 0.8 V IIL VCCeMax V INe0.4V b180 b400 mA IIH VCCeMax V INe2.4V 40 mA II VCCeMax V INe5.25V 1 mA VCL VCCeMin I INeb12 mA b0.9 b1.5 V RECEIVER VOL VCCeMin I OLe16 mA 0.35 0.5 V VOH VCCeMin I OHeb400 mA 2.4 3.2 V IOS VCCeMax V OUTe0V b20 b70 b100 mA VTH Rec V CCe5V 1.47 1.55 1.62 V IIH Rec V CCeMax V INe2V 10 100 mA II Rec V CCe0V V INe2V 100 mA IIL Rec V CCeMax V INe0.75V 100 mA ICC Low VCCeMax 80 mA ICC High 60 mA http:/ /www.national.com 2

DS3890 Switching Characteristics (Figure 1) 0§CsTAs70§C, 4.75V sVCCs5.25V unless otherwise specified Symbol Conditions Min Typ Max Units TdLH An to Bn 91 5n s TdHL 91 5n s TdLH Dis to Bn 10 18 ns TdHL 12 20 ns Tr &T f Bn rise and fall time 3 6 10 ns DS3892 Switching Characteristics (Figures 2, 3 and 4 ) Symbol Conditions Min Typ Max Units TdLH Bn to An 12 18 ns TpHL 10 18 ns TdLZ 10 18 ns TdZL Dis to An 81 5n s TdHZ 48n s TdZH 71 2n s TNR Receiver noise rejection 3 6 ns 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’’ provides conditions for actual device operation. Note 2: All currents into device pins are shown as positive values; all currents out of the device are shown as negative; all voltages are referenced to ground unless otherwise specified. All values shown as max or min are classified on absolute value basis and apply to the full operating temperature and V CC range. Note 3: All typical values are V CCe5V, T Ae 25§C. http:/ /www.national.com3

General Descriptions (Continued) The DS3892 receiver inputs incorporate a low pass filter in conjunction with high speed comparator to further enhance the noise immunity. Both devices provide equal rejection to both positive and negative noise pulses (typically 6 ns) on the bus. The DS3890 features TTL compatible inputs while the DS3892 inputs are BTL compatible. The control inputs on all devices are TTL compatible. BTL ‘‘Backplane Transceiver Logic’’ is a new logic signaling method developed by IEEE P896 Future Bus Stan- dards Committee. This standard was adopted to enhance the performance of Backplane Busses. BTL compatible bus interface circuits feature low capacitance drivers to mini- mize bus loading, a 1V nominal signal swing for reduced power consumption and receivers with precision thresholds for maximum noise immunity. This new standard overcomes some of the fundamental limitations of TTL bus transceivers in heavily loaded backplane bus applications. Devices de- signed to this standard provide significant improvements in switching speed and data integrity. AC Switching Waveforms TL/F/8700–4 Note: tRetFk10 ns from 10% to 90% TL/F/8700–5 FIGURE 1 Driver Propagation Delays http:/ /www.national.com 4

AC Switching Waveforms (Continued) TL/F/8700–10 High Low Note: tR e tF k 2 ns from 10% to 90% TL/F/8700–11 FIGURE 4 Receiver Noise Immunity: ‘‘No Response at Output’’ Input Waveforms http:/ /www.national.com 6

Physical Dimensions inches (millimeters) Order Number DS3892M http:/ /www.national.com7

DS3890 BTL Octal Trapezoidal Driver/DS3892 BTL Octal TRI-STATE Receiver Physical Dimensions inches (millimeters) (Continued) Order Numbers DS3890N or DS3892N 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 OF NATIONAL SEMICONDUCTOR CORPORATION. As used herein: 1. Life support devices or systems are devices or 2. A critical component is any component of a life systems which, (a) are intended for surgical implant support device or system whose failure to perform can into the body, or (b) support or sustain life, and whose be reasonably expected to cause the failure of the life failure to perform, when properly used in accordance support device or system, or to affect its safety or with instructions for use provided in the labeling, can effectiveness. be reasonably expected to result in a significant injury to the user. National Semiconductor National Semiconductor National Semiconductor National Semiconductor Corporation Europe Hong Kong Ltd. Japan Ltd.

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