AM2617 AMD | Alldatasheet
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Quad RS-232C Line Receiver Distinctive Characteristics @ Guaranteed input thresholds over full military tem- perature range @ Full military temperature range @ 100% reliability assurance testing in compliance with © Compatible with EIA specification RS-232C MIL-STD-883 © Input signal range + 30 volts © Includes response control input and built-in hysterisis FUNCTIONAL DESCRIPTION LOGIC SYMBOL The Am2617 is 8 quad line receiver whose electrical characteristics conform to EIA specification RS-232C, Each receiver has a single dota input that can accept signal swings of up to +30V. The output : 3 of each receiver is TTLIDTL compatibie, and includes a 2kS resistor ma oura pull-up to Vcc. An internal feedback resistor causes the input to 2 exhibit hysterisis so that AC noise immunity is maintained at @ high ial level even near the switching thresholds. For example, at 25°C when : . a receiver is ina LOW state on the output, the input may drop as me oure LOW 2s 1,25 volts without affecting the output. The device is s guaranteed to switch to the HIGH state when the input voltage is ace below 0.75V. Once the output has switched to the HIGH state, the a . input may rise to 1.75V without causing a chenge in the output. The ne oure Am2617 is guaranteed to switch to 2 LOW output when its input A reaches 2.25V. Because of this hysterisis in switching thresholds, Ree the device can receive signals with superimposed noise or with slow 7 . rise and fall times without generating oscillations on the output. The wD + outro threshold levels may be offset by a constant voltage by applying 2 ff DC bias to the response control input. A capacitor added to the aco response contro! input will reduce the frequency response of the teceiver for applications in the presence of high frequency noise Veq« Pin 14 spikes. The companion line driver is the Am2616. ono Pm > in LiC-417 CIRCUIT DIAGRAM (One Receiver) me court RESPONSE ae , i | ~ | ocxo uc48 ORDERING INFORMATION CONNECTION DIAGRAM Top View Temperature Order aw? «DD vce Molded DIP OCto+75°C — AM2617PC con ce . Hermetic DIP OC to +75°C = AM2617DC “O ve Pere Dice O°C to +75°C AM2617XC ew(s 1 Fi] 2 our Hermetic DIP 85°C 10 125°C AM2617DM erct]s w Dew Hermetic Flat Pack —55°C to 125°C = AM2617FM sore oDene Dice 56°C to #125°C | AM2617XM ono sHeor Note: Pin 1 is marked for orientation, uic-419 4-82
MAXIMUM RATINGS (Above which the useful life may be impaired) Storage Temperature —65°C to +175°C Temperature (Ambient) Under Bias —55°C to #125°C Supply Voltage to Ground Potential (Pin 14 to Pin 7) Continuous 05 Vito H10V DC Voitage Applied to Outputs for High Output State =0.5 V to +Vec max. Input Signal Range __ _ 30 V to +30 V Output Current, Into Outputs ~__30mA DC Input Current Defined by Input Voltage Limits ELECTRICAL CHARACTERISTICS OVER OPERATING TEMPERATURE RANGE (Unless Otherwise Noted) Tas OC r0 475°C Voc = 5.0V = 5% ase control pin open, ee Typ. Parameters Description Test Conditions Min, Wore) __Max. Units [Yon —[OumurHiGh Vorue | Ton=-OSmAViw=0avorome [74 [40 [~ [ Voiw | [Vor | Outour Cow Vortoge [tous Om Vin=sOV Toes vons | [vne-30v as \\ Je te input LOW Current TeV ae - Input HIGH Current Vin = #30V - - 0.43 - [sc Satpat Short iret Current | Vin=0OV.Vour=00v [ne as | ae ma [toc [Power Supply current | VoceMAK Note 1. Typical Limits are at Vcc = 5.0 V, 25°C ambient and maximum loading Threshold Characteristics (Note 2) Typ. Parameters Description Test Conditions Ta Min, tort) Max.___Units [ee | is [as | | Vre Positive-Going Threshold Voltage | VoL =048V,Vec=50v [25°C | 175 | 20 | 225 | Volts we [145 | | 1.90 | a ee 1.20 _ 165 | | [ore Tor fo vr Negative Going Threshold Vottawe | YOH * 2sv.vec=sov [asc | 07s | 096 [1.25 | vons | 75°C | 0.60 | 125°C 0.50 Notes: 1. Typical Limits are at Vec = 5.0V, 25°C ambient and maximum loading. 2 Tee iabut threshold masgin for the device t greater than the voltage computed as the Vz4—V7-_ value. For the minimum value see the input threshold margin versus temperature graph ‘Switching Characteristics (Tq = 25°C, response control pin open, Cy = 15 pF) Parameters Description Test Conditions Min. Typ. Max. Units PHL Delay Wor input HIGH 6 Ourpuw LOW [| LSSBOH Ys [oy Ompurice iw tow to 90K) | RAs | [| Output Fall Time (0% to 10%) [asso ts 4-83
Input Current Voltage Adjustment ore 11111114 ” Fee i to Ht 3 so a % a fp naenaey zee eet hd | | vaom go | | 3 olf ie fr eet RR 1, Spt 2 EAE Be =Car ee 8 eee SCL 2 ep ee Oe ce ano ses Souaacw@e ua an 35 an wo Input Threshold Versus Input Threshold Voltage Input Threshold Margin Power-Supply Voltage Versus Temperature e Versus Temperature 2 25) £30) a. 3 + = sON ct 7 16 pee oe seT ob f ce Z an rS SS g une 2 ad 2 3 os = 4 # oe PoP SS i POPES SEEDS a ni Eos oe SO Pe ee cee ee ac 4 Bo 2 = Seas te 6 25 45 65 os 1051s «© “seas 15 6 25 a5 68 08 105125 Leo DEFINITION OF TERMS FUNCTIONAL TERMS input threshold. Both thresholds can be moved by applying a bias Response Control Pin A pin available on each receiver that allows‘ the response control pin. the user to set the switching thresholds and frequency response of RS-232C A specification of the Electronic Industries Association the receiver. that defines the electrical characteristics of data signals trans- Threshold Voltage The voltage level on the input that will cause _Mitted between two pieces of digital equipment. ‘the output to change state. Because the device exhibits hysterisis, Input Signal Range The permitted range of DC voltages that can the LOW level input threshold is different from the HIGH level be applied to the receiver input without damage to the device. 4-84
SWITCHING TIME TEST CIRCUIT & WAVEFORMS Seat ™ “ew ore ~ cae | | vee Metallization and Pad Layout A OUT 3— - v) Dour 4-85