5962R7802005VFA Datasheet

DS26F32M - Quad Differential Line Receivers, Package: Lcc, Pin Nb=20


Features, Applications

The is a quad differential line receiver designed to meet the requirements of EIA Standards RS-422 and RS-423, and Federal Standards 1020 and 1030 for balanced and unbalanced digital data transmission. The DS26F32 offers improved performance due to the use of state-of-the-art L-FAST bipolar technology. The L-FAST technology allows for higher speeds and lower currents by utilizing extremely short gate delay times. Thus, the DS26F32 features lower power, extended temperature range, and improved specifications. The device features an input sensitivity 200 mV over the input common mode range � 7.0V. The DS26F32 provides an enable function common to all four receivers and TRI-STATE � outputs with 8.0 mA sink capability. Also, a fail-safe input/output relationship keeps the outputs high when the inputs are open. The DS26F32 offers optimum performance when used with the DS26F31 Quad Differential Line Driver.


n Military temperature range n Input voltage range � 7.0V (differential or common mode) � 0.2V sensitivity over the input voltage range n Meets all the requirements of EIA standards RS-422 and RS-423 n High input impedance (18k typical) 30 mV input hysteresis n Operation from single +5.0V supply n Input pull-down resistor prevents output oscillation on unused channels n TRI-STATE outputs, with choice of complementary enables, for receiving directly onto a data bus n Propagation delay 15 ns typical

(Each Receiver) Differential Inputs VID = (V IN+) - (VIN-) VID 0.2V

Top View See NS Package Number J16A For Complete Military Product Specifications, refer to the appropriate SMD or MDS. Order Number or DS26F32MW/883 See NS Package Number or W16A

TRI-STATE is a registered trademark of National Semiconductor Corporation.

If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. Storage Temperature Range Ceramic DIP to 175�C Operating Temperature Range to +70�C Lead Temperature Ceramic DIP (soldering, 60 sec) 300�C Maximum Power Dissipation (Note at 25�C

Cavity Package Supply Voltage Common Mode Voltage Range Differential Input Voltage Enable Voltage Output Sink Current

Note 1: Derate cavity package 10 mW/�C above 25�C.

Over operating range, unless otherwise specified Symbol VTH RI II Parameter Differential Input Voltage Input Resistance Input Current (under Test) Conditions -7.0V VCM O = VOL or VOH -15V VCM +15V, One Input AC Ground = +15V, Other Input = -15V, VOH Output Voltage HIGH Other Input VI +15V VCC = Min, = +1.0V, VENABLE = 0.8V, IOH -440 �A VOL Output Voltage LOW VCC = Min, = -1.0V, VENABLE to +125�C IOL 4.0 mA IOL 3.4 V

Enable Voltage LOW Enable Voltage HIGH Enable Clamp Voltage Off State (High Impedance) Output Current Enable Current LOW Enable Current HIGH Enable Input High Current Output Short Circuit Current Supply Current Input Hysteresis V

Note 2: "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" provide conditions for actual device operation. Note 3: Unless otherwise specified min/max limits apply across the to +125�C temperature range for the DS26F32M and across the to +70�C range for the DS26F32C. All typicals are given for = 5V and = 25�C. Note 4: All currents into the device pins are positive; all currents out of the device pins are negative. All voltages are reference to ground unless otherwise specified. Note 5: Only one output at a time should be shorted.

VCC = 25�C Symbol tPLH tPHL tLZ tHZ tZL tZH Parameter Input to Output Input to Output Enable to Output Enable to Output Enable to Output Enable to Output (Figures 5 pF (Figures 2, 3) Conditions 15 pF Min Typ Max Units ns

FIGURE 2. Load Test Circuit for Three-State Outputs



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