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| HI-8420 October 2001 DESCRIPTION The HI-8420 is a six channel discrete-to-digital interface device. Mixed-signal CMOS technology is used to provide superior low-power performance. The HI-8420 has six separate Open / Ground sensing inputs. The device outputs are CMOS / TTL compatible and may be disabled (tri-state) using the CE and OE pins. The device is a drop-in replacement for the DEI1026. For added functionality, the Holt HI-8422 offers eight channels of Open / Ground sensing and eight channels of 28V / Ground sensing in a single device. The HI-8420 is offered in a small footprint 16-pin plastic package. Please contact the Holt sales department for other packaging options. PIN CONFIGURATION IN1 IN2 IN3 IN4 IN5 IN6 OE CE 1 2 3 4 5 6 7 8 16 15 14 GND OUT1 OUT2 OUT3 OUT4 OUT5 OUT6 VDD HI-8420PS 13 12 11 10 9 16-Pin Plastic SOIC package (Narrow Body) FEATURES ! ! ! ! ! Six independent Open / Ground sensing channels 5.0V single supply operation BLOCK DIAGRAM OE Low power CMOS technology Military processing options available Drop in replacement for DEI1026 CE VDD IN1 5K 9K + OUT1 IN2 5K 9K + OUT2 IN3 5K 9K + OUT3 FUNCTION TABLE Discrete Input Open Ground X X CE 0 0 1 X OE 0 0 X 1 Output IN4 5K 9K + OUT4 5K 9K IN5 + OUT5 0 1 High Z High Z 5K 9K IN6 + 9K 5K 3.25V Reference OUT6 GND (DS8420 Rev. New) HOLT INTEGRATED CIRCUITS www.holtic.com 10/01 HI-8420 PIN DESCRIPTIONS PIN 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 SYMBOL IN1 IN2 IN3 IN4 IN5 IN6 OE CE VDD OUT6 OUT5 OUT4 OUT3 OUT2 OUT1 GND FUNCTION Discrete Input Discrete Input Discrete Input Discrete Input Discrete Input Discrete Input Digital input Digital input Power Tri-state output Tri-state output Tri-state output Tri-state output Tri-state output Tri-state output Power DESCRIPTION Open / Ground sensing input, channel 1 Open / Ground sensing input, channel 2 Open / Ground sensing input, channel 3 Open / Ground sensing input, channel 4 Open / Ground sensing input, channel 5 Open / Ground sensing input, channel 6 Output Enable. OUT1-OUT6 are high-impedance if OE is high Chip Enable. OUT1-OUT6 are high-impedance if CE is high Positive supply voltage 5.0 V Logic output, channel 6 Logic output, channel 5 Logic output, channel 4 Logic output, channel 3 Logic output, channel 2 Logic output, channel 1 Ground ABSOLUTE MAXIMUM RATINGS Supply voltage (VDD) Logic input voltage range Discrete input voltage range Power dissipation at 25C Solder temperature Storage temperature -0.3 V to +7 V -0.3 V to +5.5 V -5 V to + 35 V 350 mW 275C for 10 sec -65C to +150C RECOMMENDED OPERATING CONDITIONS Supply Voltage VDD .................................. 4.5 V to 5.5 V Operating Temperature Range Industrial Screening ......... Hi-Temp Screening ........ -40C to +85C -55C to +125C NOTE: Stresses above absolute maximum ratings or outside recommended operating conditions may cause permanent damage to the device. These are stress ratings only. Operation at the limits is not recommended. VDD = 5.0V 10%, GND = 0V, TA = Operating Temperature Range (unless otherwise specified). PARAMETER DISCRETE INPUTS Ground state input voltage Open state input voltage Ground state input resistor Open state input resistor Input source current Reverse leakage current SYMBOL VSG VSO RIG RIO IIO IIR CONDITION Input voltage to give high output Input voltage to give low output Resistor from input to ground to give high output Resistor from input to ground to give low output Current sourced into 100 to ground VIN = 35 V, VDD = 0 V MIN TYP MAX 3.0 UNITS V V 3.5 0 100 -100 -330 5.0 100 K A mA HOLT INTEGRATED CIRCUITS 2 HI-8420 VDD = 5.0V 10%, GND = 0V, TA = Operating Temperature Range (unless otherwise specified). PARAMETER LOGIC INPUTS (CE, OE) Input Voltage Input current OUTPUTS Logic output voltage Logic output voltage (CMOS) Tri-state output current SUPPLY CURRENT VDD current SWITCHING CHARACTERISTICS Propagation delay Output enable time Output disable time IN to OUT High Low High Low Input voltage HI Input voltage LO Input sink Input source SYMBOL VIH VIL IIH IIL VOH VOL VOH VOL IOZ CONDITION MIN 2.0 TYP MAX UNITS V 0.8 VIH = VDD VIL = 0 V IOH = -5 mA IOL = 5 mA IOH = -100 uA IOL = 100 uA VOUT = 0 V or VDD VDD - 0.2 0.2 10 -1.0 2.4 0.4 1.0 V A A V V V V A IDD tLH, tHL tZL, tZH tLZ, tHZ VIN = VDD (all inputs) 5 10 150 mA ns ns ns From CE or OE From CE or OE 25 25 CE or OE tZL, tZH tZL, tZH INx tHL tLH OUTx OUTx Output Enable Timing Input to Output Propagation Delay ORDERING INFORMATION HI-8420PSI HI-8420PST 16 PIN PLASTIC SOIC (NARROW BODY) 16 PIN PLASTIC SOIC (NARROW BODY) -40C TO +85C -55C TO +125C I T NO NO SOLDER SOLDER HOLT INTEGRATED CIRCUITS 3 PACKAGE DIMENSIONS inches (millimeters) 16-PIN PLASTIC SMALL OUTLINE (SOIC) - NB (Narrow Body) .3898 .0039 (9.901 .099) .00865 .00115 (.220 .029) Package Type: 16HN .236 .008 (6.00 .20) Top View .1535 .0035 (3.899 .089) .0165 .0035 (.419 ..089) Detail A .061 .007 (1.549 .178) 0 to 8 .050 .010 (1.270 .254) .033 .017 (.838 .432) Detail A .0069 .0029 (.175 .074) HOLT INTEGRATED CIRCUITS 4 |
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