HI-8420, HI-8423 6-Channel / 8-Channel Discrete-to-Digital Interface Sensing Open / Ground Signals December 2013 DESCRIPTION FEATURES The HI-8420 is a six channel discrete-to-digital interface device. The HI-8423 has eight channels. Mixed-signal CMOS technology is used to provide superior low-power performance. The device inputs are configured to sense Ground / 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 Open / Ground sensing channels The HI-8420 is a drop-in replacement for the DEI1026. ! HI-8420 is a drop in replacement for 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. PIN CONFIGURATIONS BLOCK DIAGRAM ! 5.0V single supply operation ! Low power CMOS technology ! Industrial and Extended temperature ranges IN1 1 16 GND IN2 2 15 OUT1 IN3 3 IN4 4 OE IN5 5 CE VDD IN1 5K 9K + OUT1 IN2 5K 9K + OUT2 IN3 5K 9K + OUT3 IN4 5K 9K + OUT4 - IN5 5K 9K + OUT5 IN6 5K 9K 5K + OE 7 10 OUT6 CE 8 9 VDD 16-Pin Plastic SOIC package (Narrow Body) IN1 1 IN2 2 IN3 3 IN4 4 IN5 5 IN6 6 IN7 7 OE 8 CE 9 VDD 10 HI-8423PTI HI-8423PTT 20 19 18 17 16 15 14 13 12 11 GND OUT1 OUT2 OUT3 IN8 OUT4 OUT5 OUT6 OUT7 OUT8 20 Pin TSSOP package OUT7 FUNCTION TABLE 9K + IN8 OUT8 9K (DS8420 Rev. F) 11 OUT5 OUT6 - GND 12 OUT4 9K IN7 5K 13 OUT3 IN6 6 + - 14 OUT2 HI-8420PSI HI-8420PST 5K 3.25V Reference Discrete Input CE OE Output Open 0 0 0 Ground 0 0 1 X 1 X High Z X X 1 High Z HOLT INTEGRATED CIRCUITS www.holtic.com 12/13 HI-8420, HI-8423 PIN DESCRIPTIONS PIN (HI-8420) (HI-8423) SYMBOL FUNCTION DESCRIPTION 1 1 IN1 Discrete Input Open / Ground sensing input, channel 1 2 2 IN2 Discrete Input Open / Ground sensing input, channel 2 3 3 IN3 Discrete Input Open / Ground sensing input, channel 3 4 4 IN4 Discrete Input Open / Ground sensing input, channel 4 5 5 IN5 Discrete Input Open / Ground sensing input, channel 5 6 6 IN6 Discrete Input Open / Ground sensing input, channel 6 Open / Ground 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 Open / Ground 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 Ground HOLT INTEGRATED CIRCUITS 2 HI-8420, HI-8423 ABSOLUTE MAXIMUM RATINGS Supply voltage (VDD) Logic input voltage range Discrete input voltage range Power dissipation at 25°C Solder temperature (reflow) Storage temperature -0.3 V to +7 V -0.3 V to +5.5 V -80 V to + 80 V 350 mW 260°C -65°C to +150°C 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 Ground state input voltage VSG Input voltage to give high output Open state input voltage VSO Input voltage to give low output 3.5 Ground state input resistor RIG 0 Open state input resistor RIO Resistor from input to ground to give high output Resistor from input to ground to give low output Input source current IIO Current sourced into 100W Reverse leakage current IIR VIN = 35 V, VDD = 0 V TYP MAX UNITS 3.0 V DISCRETE INPUTS V 100 KW 100 -100 W -330 µA to ground 5.0 mA 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 = VDD (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 150 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 HOLT INTEGRATED CIRCUITS 3 HI-8420, HI-8423 TIMING DIAGRAMS CE or OE INx tZL, tZH tZL, tZH tLH tHL OUTx OUTx Output Enable Timing Input to Output Propagation Delay INPUT SWITCHING THRESHOLD The input switching threshold of the Open / Ground inputs will decrease with increasing series resistance according to the function VT = 3.25 - 0.1R where VT is the nominal input switching threshold, and R is the value of the external series resistor in Kohms. ORDERING INFORMATION HI - 842xxx x x LEAD FINISH PART NUMBER Blank Tin / Lead (Sn / Pb) Solder 100% Matte Tin (Pb-free, RoHS compliant) F PART NUMBER 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 8420PS 16 PIN PLASTIC NARROW BODY SOIC (16HN) 8423PT 20 PIN PLASTIC TSSOP (20HT) HOLT INTEGRATED CIRCUITS 4 HI-8420, HI-8423 REVISION HISTORY P/N DS8420 Rev Date E 08/04/10 F 12/10/13 Description of Change Removed reference to lightning protected inputs throughout datasheet, increased discrete input voltage range and added reference to available temperature ranges. Update package information. Update solder reflow temperature in Absolute Maximum Ratings table. HOLT INTEGRATED CIRCUITS 5 PACKAGE DIMENSIONS 16-PIN PLASTIC SMALL OUTLINE (SOIC) - NB (Narrow Body) Package Type: 16HN 0.175 ± 0.075 (0.007 ± 0.003) 9.90 (0.390) BSC 6.00 (0.236) BSC millimeters (inches) 3.90 (0.154) BSC Top View See Detail A 0.410 ± 0.100 (0.016 ± 0.004) 1.25 (0.049) min 1.27 BSC (0.050) 0° to 8° 0.175 ± 0.075 (0.007 ± 0.003) 0.835 ± 0.435 (0.033 ± 0.017) BSC = “Basic Spacing between Centers” is theoretical true position dimension and has no tolerance. (JEDEC Standard 95) Detail A 20-PIN PLASTIC TSSOP millimeters(inches) Package Type: 20HS 6.500 ± 0.100 (0.256 ± .004) 6.400 ± 0.150 (0.252 ± 0.006) Pin 1 0.145 ± 0.055 (0.006 ± 0.002) 4.400 ± 0.100 (0.173 ± 0.004) See Detail A 0.220 ± 0.050 (0.0087 ± 0.002) 0.925 ± 0.125 (0.036 ± 0.005) 0.650 BSC (0.026) BSC = “Basic Spacing between Centers” is theoretical true position dimension and has no tolerance. (JEDEC Standard 95) 0° to 8° 0.100 ± 0.050 (0.004 ± 0.002) 0.600 ± 0.150 (0.024 ± 0.006) HOLT INTEGRATED CIRCUITS 6 Detail A