HI-8421, HI-8424 6-Channel / 8-Channel Discrete-to-Digital Interface Sensing 28V / Open Signals August 2010 DESCRIPTION FEATURES The HI-8421 is a six channel discrete-to-digital interface device.The HI-8424 has eight channels. Mixed-signal CMOS technology is used to provide superior low-power performance. The device inputs are configured to sense 28V / Open discrete signals. The device outputs are CMOS / TTL compatible and may be disabled (tri-state) using the CE and OE pins. ! 6 or 8 independent 28V / Open sensing channels The HI-8421 is a drop-in replacement for the DEI1054. ! HI-8421 is a drop in replacement for DEI1054 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. PIN CONFIGURATIONS BLOCK DIAGRAM ! 5.0V single supply operation ! Low power CMOS technology ! Industrial and Extended Temperatures IN1 1 16 GND IN2 2 15 OUT1 IN3 3 IN4 4 IN5 5 VDD 14 OUT2 HI-8421PSI HI-8421PST 13 OUT3 12 OUT4 OE IN6 6 11 OUT5 CE OE 7 10 OUT6 CE 8 9 VDD 3.6V Reference + 66 K - IN1 OUT1 29 K 16-Pin Plastic SOIC package (Narrow Body) + 66 K IN2 - OUT2 29 K + 66 K IN3 - OUT3 29 K + 66 K IN4 - OUT4 29 K + 66 K IN5 - OUT5 IN1 1 IN2 2 IN3 3 IN4 4 IN5 5 IN6 6 IN7 7 OE 8 CE 9 VDD 10 29 K - OUT6 29 K FUNCTION TABLE + 66 K IN7 - OUT7 29 K + 66 K - IN8 29 K GND (DS8421 Rev. F) GND OUT1 OUT2 OUT3 IN8 OUT4 OUT5 OUT6 OUT7 OUT8 20 Pin TSSOP package + 66 K IN6 HI-8424PTI HI-8424PTT 20 19 18 17 16 15 14 13 12 11 OUT8 Discrete Input CE OE Output Open 0 0 1 28 Volts 0 0 0 X 1 X High Z X X 1 High Z HOLT INTEGRATED CIRCUITS www.holtic.com 08/10 HI-8421, HI-8424 PIN DESCRIPTIONS PIN (HI-8421) (HI-8424) SYMBOL FUNCTION DESCRIPTION 1 1 IN1 Discrete Input 28 Volt / Open sensing input, channel 1 2 2 IN2 Discrete Input 28 Volt / Open sensing input, channel 2 3 3 IN3 Discrete Input 28 Volt / Open sensing input, channel 3 4 4 IN4 Discrete Input 28 Volt / Open sensing input, channel 4 5 5 IN5 Discrete Input 28 Volt / Open sensing input, channel 5 6 6 IN6 Discrete Input 28 Volt / Open sensing input, channel 6 28 Volt / Open sensing input channel 7 - 7 IN7 Discrete Input 7 8 OE Digital input Output Enable. OUT1-OUT8 are high-impedance if OE is high 8 9 CE Digital input Chip Enable. OUT1-OUT8 are high-impedance if CE is high 9 10 VDD Power - 11 OUT8 Tri-state output Logic output, channel 8 Positive supply voltage 5.0 V - 12 OUT7 Tri-state output Logic output, channel 7 10 13 OUT6 Tri-state output Logic output, channel 6 11 14 OUT5 Tri-state output Logic output, channel 5 12 15 OUT4 Tri-state output Logic output, channel 4 - 16 IN8 Discrete Input 28 Volt / Open sensing input, channel 8 13 17 OUT3 Tri-state output Logic output, channel 3 14 18 OUT2 Tri-state output Logic output, channel 2 15 19 OUT1 Tri-state output Logic output, channel 1 16 20 GND Power ABSOLUTE MAXIMUM RATINGS Supply voltage (VDD) Logic input voltage range Discrete input voltage range Power dissipation at 25°C Solder temperature Storage temperature -0.3 V to +7 V -0.3 V to +5.5 V -80 V to + 80 V 350 mW 275°C for 10 sec -65°C to +150°C Ground RECOMMENDED OPERATING CONDITIONS Supply Voltage VDD .................................. 4.5 V to 5.5 V Operating Temperature Range Industrial Screening ......... -40°C to +85°C Hi-Temp Screening ........ -55°C to +125°C 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. ELECTRICAL CHARACTERISTICS VDD = 5.0V ± 10%, GND = 0V, TA = Operating Temperature Range (unless otherwise specified). PARAMETER SYMBOL CONDITION MIN Open state input voltage VSO Input voltage to give high output -5 28 V state input voltage VS28 Input voltage to give low output 14 Open state input current ISO Maximum input current to give high output 28 V state input current IS28 Minimum input current to give low output 197 Input resistance RIN 0 V < VIN < 16 V 71 Input current at 28 V IIN28 VIN = 28 V TYP MAX UNITS 10 V DISCRETE INPUTS HOLT INTEGRATED CIRCUITS 2 V 84 µA µA 119 KW 394 µA HI-8421, HI-8424 ELECTRICAL CHARACTERISTICS (Cont.) VDD = 5.0V ± 10%, GND = 0V, TA = Operating Temperature Range (unless otherwise specified). PARAMETER SYMBOL CONDITION MIN TYP MAX UNITS LOGIC INPUTS (CE, OE) Input Voltage Input voltage HI VIH Input voltage LO VIL Input sink IIH VIH = VDD Input source IIL VIL = 0 V -1.0 High VOH IOH = -5 mA 2.4 Low VOL IOL = 5 mA High VOH IOH = -100 uA Low VOL IOL = 100 uA 0.2 V IOZ VOUT = 0 V or VDD ±10 µA IDD VIN = 0 V (all inputs) 10 mA Input current 2.0 V 0.8 V 1.0 µA µA OUTPUTS Logic output voltage Logic output voltage (CMOS) Tri-state output current V 0.4 VDD - 0.2 V V SUPPLY CURRENT VDD current 5 SWITCHING CHARACTERISTICS Propagation delay 500 ns Output enable time IN to OUT tLH, tHL tZL, tZH From CE or OE 25 ns Output disable time tLZ, tHZ From CE or OE 25 ns TIMING DIAGRAMS CE or OE INx tZL, tZH tZL, tZH tLH tHL OUTx OUTx Output Enable Timing Input to Output Propagation Delay ORDERING INFORMATION HI - 842xxx x x PART NUMBER Blank F PART NUMBER LEAD FINISH Tin / Lead (Sn / Pb) Solder 100% Matte Tin (Pb-free, RoHS compliant) TEMPERATURE RANGE FLOW BURN IN I -40°C TO +85°C I NO T -55°C TO +125°C T NO PART NUMBER PACKAGE DESCRIPTION 8421PS 16 PIN PLASTIC NARROW BODY SOIC (16HN) 8424PT 20 PIN PLASTIC TSSOP (20HT) HOLT INTEGRATED CIRCUITS 3 HI-8421, HI-8424 REVISION HISTORY P/N DS8421 Rev Date F 08/04/10 Description of Change Removed reference to lightning protection throughout datasheet and added reference to available temperature ranges. HOLT INTEGRATED CIRCUITS 4 PACKAGE DIMENSIONS 16-PIN PLASTIC SMALL OUTLINE (SOIC) - NB (Narrow Body) Package Type: 16HN .0087 ± .0015 (.220 ± .029) .390 ± .004 (9.90 ± .10) .236 ±.008 (5.99 ±.20) inches (millimeters) .1525 ± .0025 (3.87 ± .06) Top View See Detail A .0165 ± .003 (.419 ± .089) .061 ± .007 (1.549 ± .178) .050 BSC (1.27) 0° to 8° .0025 ± .002 (.064 ± .038) .033 ± .017 (.838 ± .432) BSC = “Basic Spacing between Centers” is theoretical true position dimension and has no tolerance. (JEDEC Standard 95) Detail A 20-PIN PLASTIC TSSOP inches (millimeters) Package Type: 20HT 0.252 (6.400) 0.259 (6.600) Gate Plane 0.010 (0.254) 0° to 8° 0.169 (4.300) 0.177 (4.500) Pin 1 0.246 (6.250) 0.258 (6.550) 0.018 (0.450) 0.029 (0.750) Detail A 0.035 (0.889) 0.047 (1.200) .031 (0.800) .041(1.050) 0.004 (0.090) 0.008 (0.200) See Detail A .025 BSC (.65) 0.007 (0.190) 0.012 (0.300) 0.002 (0.050) 0.006 (0.150) HOLT INTEGRATED CIRCUITS 5 BSC = “Basic Spacing between Centers” is theoretical true position dimension and has no tolerance. (JEDEC Standard 95)