View ST75C176BD_1602342.PDF datasheet online --- IC-ON-LINE

Datasheet File OCR Text:

1/12 october 2001 n low quiescent current: 300 m a n designed for rs-485 interface applications n -7v to 12v common mode input voltage range n driver maintains high impedance in 3-state or with the power off n 70mv typical input hysteresis n 30ns propagation delays, 5ns skew n operate from a single 5v supply n current limiting and thermal shutdown for driver overload protection n allows up to 32 transceivers on the bus n bic mos technology description the st75c176 is al low power transceiver for rs-485 and rs-422 communication. each part contains one driver and one receiver. this transceiver draw 300 m a (typ.) of supply current when unloaded or fully loaded with disabled drivers. it operates from a single 5v supply. driver is short-circuit current limited and is protected against excessive power dissipation by thermal shutdown circuitry that placed the driver outputs into a high-impedance state. the receiver input has a fail safe feature that guarantees a logic-high output if the input is open circuit. the st75c176 is designed for bi-directional data communications on multipoint bus transmission line (half-duplex applciations). ordering codes ty pe temperature range package comments st75c176cn 0 to 70 c dip-8 50parts per tube / 40tube per box st75c176bn -40 to 85 c dip-8 50parts per tube / 40tube per box st75c176cd 0 to 70 c so-8 (tube) 100parts per tube / 20tube per box ST75C176BD -40 to 85 c so-8 (tube) 100parts per tube / 20tube per box st75c176cdr 0 to 70 c so-8 (tape & reel) 2500 parts per reel ST75C176BDr -40 to 85 c so-8 (tape & reel) 2500 parts per reel st75c176 low power rs-485/rs-422 transceiver dip sop
st75c176 2/12 pin configuration pin description truth table (driver) x= dont care; z=high impedance truth table (receiver) x= dont care; z=high impedance absolute maximum ratings absolute maximum ratings are those values beyond which damage to the device may occur. functional operation under these conditi on is not implied. pln n symbol name and function 1 ro receiver output 2re receiver output enable 3 de driver output enable 4 di driver input 5 gnd ground 6 a non-inverting receiver input and non-inverting driver output 7 b inverting receiver input and inverting driver output 8 v cc supply voltage inputs outputs re de di b a xhhlh xhlhl xlxzz inputs output re de a-b ro ll 3 +0.2v h ll -0.2v l l l inputs open h hl x z symbol parameter value unit v cc supply voltage 12 v v i control input voltage (re , de) -0.5 to (v cc + 0.5) v v di driver input voltage (di) -0.5 to (v cc + 0.5) v v do driver output voltage (a, b) 14 v v ri receiver input voltage (a, b) 14 v v ro receiver output voltage (ro) -0.5 to (v cc + 0.5) v
st75c176 3/12 dc electrical characteristics (v cc = 5v 5%, t a = t min to t max , unless otherwise specified. typical values are referred to t a = 25c) (see note 1) note 1: all currents into device pins are positive; all cuttents out of device pins are negative; all voltages are referenced t o device ground unless specified. note 2: supply current specification is valid for loaded transmitters when v de = 0v note 3: applies to peak current. see typical operating characteristics. symbol parameter test conditions min. typ. max. unit v od1 differential driver output (no load) 5v v od2 differential driver output (with load) r l = 27 w (rs-485) (see fig. 1) r l = 50 w (rs-422) (see fig. 1) 1.5 5 5 v v d v od change in magnitude of driver differential output voltage for complementary output states r l = 27 w or 50 w (see fig. 1) 0.2 v v oc driver common-mode output voltage r l = 27 w or 50 w (see fig. 1) 3 v d v oc change in magnitude of driver common-mode output voltage for complementary output states r l = 27 w or 50 w (see fig. 1) 0.2 v v ih input high voltage re , de, di 2.0 v v il input low voltage re , de, di 0.8 v i in1 input current re , de, di 2 m a i in2 input current (a, b) v cm = 0v or 5.25v v de = 0v v in = 12v v in = -7v 1 -0.8 ma ma v th receiver differential threshold voltage v cm = -7 to 12v -0.2 0.2 v d v th receiver input hysteresis v cm = 0v 70 mv v oh receiver output high voltage i o = -4ma v id = 200mv 3.5 v v ol receiver output low voltage i o = 4ma v id = -200mv 0.4 v i ozr 3-state (high impedance) output current at receiver v o = 0.4 to 2.4v 1 m a r in receiver input resistance v cm = -7 to 12v 12 k w i cc no load supply current (note 2) v re = 0v or v cc v de = v cc v de = 0v 400 300 900 500 m a m a i osd1 driver short-circuit current, v o =high v o = -7 to 12v (note 3) 35 250 ma i osd2 driver short-circuit current, v o =low v o = -7 to 12v (note 3) 35 250 ma i osr receiver short-circuit current v o = 0v to v cc 795ma
st75c176 4/12 driver switching characteristics (v cc = 5v 5%, t a = t min to t max , unless otherwise specified. typical values are referred to t a = 25c) (see note 1) note 1: all currents into device pins are positive; all cuttents out of device pins are negative; all voltages are referenced t o device ground unless specified. receiver switching characteristics (v cc = 5v 5%, t a = t min to t max , unless otherwise specified. typical values are referred to t a = 25c) (see note 1) note 1: all currents into device pins are positive; all cuttents out of device pins are negative; all voltages are referenced t o device ground unless specified. symbol parameter test conditions min. typ. max. unit t plh t phl propagation delay input to output r diff = 54 w c l1 = c l2 = 100pf (see fig. 3 and 5) 10 30 60 ns t sk output skew to output r diff = 54 w c l1 = c l2 = 100pf (see fig. 3 and 5) 510ns t tlh t thl rise or fall time r diff = 54 w c l1 = c l2 = 100pf (see fig. 3 and 5) 31540ns t pzh output enable time c l = 100pf s2 = closed (see fig. 4 and 6) 40 70 ns t pzl output enable time c l = 100pf s1 = closed (see fig. 4 and 6) 40 70 ns t plz output disable time c l = 15pf s1 = closed (see fig. 4 and 6) 40 70 ns t phz output disable time c l = 15pf s2 = closed (see fig. 4 and 6) 40 70 ns symbol parameter test conditions min. typ. max. unit t plh t phl propagation delay input to output r diff = 54 w c l1 = c l2 = 100pf (see fig. 3 and 7) 20 130 210 ns t skd differential receiver skew r diff = 54 w c l1 = c l2 = 100pf (see fig. 3 and 7) 13 ns t pzh output enable time c rl = 15pf s1 = closed (see fig. 2 and 8) 20 50 ns t pzl output enable time c rl = 15pf s2 = closed (see fig. 2 and 8) 20 50 ns t plz output disable time c rl = 15pf s1 = closed (see fig. 2 and 8) 20 50 ns t phz output disable time c rl = 15pf s2 = closed (see fig. 2 and 8) 20 50 ns f max maximum data rate 2.5 mbps
st75c176 5/12 test circuits and typical characteristics figure 1 : driver dc test load figure 2 : receiver timing test load figure 3 : drive/receiver timing test circuit figure 4 : driver timing test load
st75c176 6/12 figure 5 : driver propagation delay figure 6 : driver enable and disable time
st75c176 7/12 figure 7 : receiver propagation delay figure 8 : receiver enable and disable time
st75c176 8/12 figure 9 : receiver output current vs output low voltage figure 10 : receiver output current vs output high voltage figure 11 : driver output current vs output low voltage figure 12 : driver output current vs output high voltage figure 13 : supply current vs temperature figure 14 : receiver high level output voltage vs temperature
st75c176 9/12 figure 15 : receiver low level output voltage vs temperature figure 16 : differential driver output voltage vs temperature
st75c176 10/12 dim. mm. inch min. typ max. min. typ. max. a 3.3 0.130 a1 0.7 0.028 b 1.39 1.65 0.055 0.065 b1 0.91 1.04 0.036 0.041 b 0.5 0.020 b1 0.38 0.5 0.015 0.020 d 9.8 0.386 e 8.8 0.346 e 2.54 0.100 e3 7.62 0.300 e4 7.62 0.300 f 7.1 0.280 i 4.8 0.189 l 3.3 0.130 z 0.44 1.6 0.017 0.063 plastic dip-8 mechanical data p001f
st75c176 11/12 dim. mm. inch min. typ max. min. typ. max. a 1.75 0.068 a1 0.1 0.25 0.003 0.009 a2 1.65 0.064 a3 0.65 0.85 0.025 0.033 b 0.35 0.48 0.013 0.018 b1 0.19 0.25 0.007 0.010 c 0.25 0.5 0.010 0.019 c1 45 (typ.) d 4.8 5.0 0.189 0.196 e 5.8 6.2 0.228 0.244 e 1.27 0.050 e3 3.81 0.150 f 3.8 4.0 0.149 0.157 l 0.4 1.27 0.015 0.050 m 0.6 0.023 s8 (max.) so-8 mechanical data 0016023
st75c176 12/12 information furnished is believed to be accurate and reliable. however, stmicroelectronics assumes no res ponsibility for the consequences of use of such information nor for any infringement of patents or other rights of third parties which may result f rom its use. no license is granted by implication or otherwise under any patent or patent rights of stmicroelectronics. specificati ons mentioned in this publication are subject to change without notice. this publication supersedes and replaces all information previously supplied. stmicroelectronics products are not authorized for use as critical components in life support d evices or systems without express written approval of stmicroelectronics. ? the st logo is a registered trademark of stmicroelectronics ? 2001 stmicroelectronics - printed in italy - all rights reserved stmicroelectronics group of companies australia - brazil - canada - china - finland - france - germany - hong kong - india - israel - italy - japan - malaysia - malt a - morocco singapore - spain - sweden - switzerland - united kingdom - united states. ? http://www.st.com

▲Up To Search▲

Price & Availability of ST75C176BD

	To Download ST75C176BD Datasheet File
If you can't view the Datasheet, Please click here to try to view without PDF Reader .