View HD74ALVCH162270_1371496.PDF datasheet online --- IC-ON-LINE

Datasheet File OCR Text:

HD74ALVCH162270 12-bit to 24-bit registered bus exchanger with 3-state outputs ade-205-178a (z) 2nd. edition march 1998 description the HD74ALVCH162270 is used in applications where data must be transferred from a narrow high speed bus to a wide lower frequency bus. the device provides synchronous data exchange between the two ports. data is stored in the internal registers on the low to high transition of the clock (clk) input when the appropriate clken inputs are low. the select ( sel ) line selects 1b or 2b data for the a outputs. for data transfer in the a to b direction, a two stage pipeline is provided in the a to 1b path, with a single storage register in the a to 2b path. proper control of the clkena inputs allows two sequential 12-bit words to be presented synchronously as a 24-bit word on the b port. data flow is controlled by the active low output enables ( oea , oeb ). the control terminals are registered to synchronize the bus direction changes with clk. active bus hold circuitry is provided to hold unused or floating data inputs at a valid logic level. all outputs, which are designed to sink up to 12 ma, include 26 w resistors to reduce overshoot and undershoot. features v cc = 2.3 v to 3.6 v typical v ol ground bounce < 0.8 v (@v cc = 3.3 v, ta = 25?) typical v oh undershoot > 2.0 v (@v cc = 3.3 v, ta = 25?) high output current ?2 ma (@v cc = 3.0 v) bus hold on data inputs eliminates the need for external pullup / pulldown resistors all outputs have equivalent 26 w series resistors, so no external resistors are required.
HD74ALVCH162270 2 function table inputs outputs clk oea oeb a 1b, 2b - hhz z - h l z active - l h active z - l l active active output enable inputs outputs clkena1 clkena2 clk a 1b 2b xh - l1b 0 *1, 2 2b 0 *1 xh - h1b 0 *1, 2 2b 0 *1 ll - ll *2 l ll - hh *2 h hl - l1b 0 *1 l hl - h1b 0 *1 h hhxx1b 0 *1 2b 0 *1 a-to-b storage ( oeb = l) note: this functional table describes the case of transferring the same data for a to 1b path. for the case of transferring different data, see logic diagrams.
HD74ALVCH162270 3 inputs output a clken1b clken2b clk sel 1b 2b hx xhx xa 0 *1 xhxl x xa 0 *1 lx - hl xl lx - hh xh xl - lxll xl - lxhh b-to-a storage ( oea = l) h : high level l : low level x : immaterial z : high impedance - : low to high transition notes: 1. output level before the indicated steady state input conditions were established. 2. two clk edges are needed to propagate data.
HD74ALVCH162270 4 pin arrangement (top view) 1 2 3 4 5 6 7 8 9 10 v cc v cc clken1b 2b3 gnd 2b2 2b1 a1 a2 a3 gnd a4 a5 a6 a7 a8 a9 gnd a10 a11 a12 1b1 1b2 oea 11 12 13 14 15 16 17 18 19 20 21 22 23 24 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 1b5 gnd 25 32 gnd 1b3 26 31 1b4 clken2b 27 30 clkena1 sel 28 29 clk 1b6 1b7 1b8 1b9 1b10 gnd 1b11 1b12 2b12 2b11 2b10 gnd 2b9 2b8 2b7 2b6 2b5 2b4 oeb gnd clkena2 v cc v cc
HD74ALVCH162270 5 absolute maximum ratings item symbol ratings unit conditions supply voltage v cc ?.5 to 4.6 v input voltage *1, 2 v i ?.5 to 4.6 v except i/o ports ?.5 to v cc +0.5 i/o ports output voltage *1, 2 v o ?.5 to v cc +0.5 v input clamp current i ik ?0 ma v i < 0 output clamp current i ok 50 ma v o < 0 or v o > v cc continuous output current i o 50 ma v o = 0 to v cc v cc , gnd current / pin i cc or i gnd 100 ma maximum power dissipation at ta = 55 c (in still air) *3 p t 1 w tssop storage temperature tstg ?5 to 150 c notes: stresses beyond those listed under ?bsolute maximum ratings?may cause permanent damage to the device. these are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under ?ecommended operating conditions?is not implied. exposure to absolute maximum rated conditions for extended periods may affect device reliability. 1. the input and output negative voltage ratings may be exceeded if the input and output clamp current ratings are observed. 2. this value is limited to 4.6 v maximum. 3. the maximum package power dissipation is calculated using a junction temperature of 150 c and a board trace length of 750 mils. recommended operating conditions item symbol min max unit conditions supply voltage v cc 2.3 3.6 v input voltage v i 0v cc v output voltage v o 0v cc v high level output current i oh 6mav cc = 2.3 v 8 v cc = 2.7 v ?2 v cc = 3.0 v low level output current i ol 6 ma v cc = 2.3 v ? v cc = 2.7 v ?2 v cc = 3.0 v input transition rise or fall rate d t / d v 0 10 ns / v operating temperature ta ?0 85 c note: unused control inputs must be held high or low to prevent them from floating.
HD74ALVCH162270 6 logic diagram 1 of 12 channels 1d c1 1d c1 clk clken1b clken2b clkena1 oeb oea a1 1b1 2b1 clkena2 1d ce c1 1d ce c1 1d ce c1 1d ce c1 1d ce c1 g1 1 1 29 2 27 23 6 30 55 56 sel 28 1 8
HD74ALVCH162270 7 electrical characteristics (ta = ?0 to 85?) item symbol v cc (v) min max unit test conditions input voltage v ih 2.3 to 2.7 1.7 v 2.7 to 3.6 2.0 v il 2.3 to 2.7 0.7 2.7 to 3.6 0.8 output voltage v oh 2.3 to 3.6 v cc ?.2 v i oh = ?00 m a 2.3 1.9 i oh = ? ma, v ih = 1.7 v 2.3 1.7 i oh = ? ma, v ih = 1.7 v 3.0 2.4 i oh = ? ma, v ih = 2.0 v 2.7 2.0 i oh = ? ma, v ih = 2.0 v 3.0 2.0 i oh = ?2 ma, v ih = 2.0 v v ol 2.3 to 3.6 0.2 i ol = 100 m a 2.3 0.4 i ol = 4 ma, v il = 0.7 v 2.3 0.55 i ol = 6 ma, v il = 0.7 v 3.0 0.55 i ol = 6 ma, v il = 0.8 v 2.7 0.6 i ol = 8 ma, v il = 0.8 v 3.0 0.8 i ol = 12 ma, v il = 0.8 v input current i in 3.6 5 m av in = v cc or gnd i in (hold) 2.3 45 v in = 0.7 v 2.3 ?5 v in = 1.7 v 3.0 75 v in = 0.8 v 3.0 ?5 v in = 2.0 v 3.6 500 v in = 0 to 3.6 v *1 off state output current i oz 3.6 10 m av out = v cc or gnd quiescent supply current i cc 3.6 40 m av in = v cc or gnd d i cc 3.0 to 3.6 750 m av in = one input at (v cc ?.6) v, other inputs at v cc or gnd note: 1. this is the bus hold maximum dynamic current required to switch the input from one state to another.
HD74ALVCH162270 8 switching characteristics (ta = ?0 to 85?) item symbol v cc (v) min typ max unit from (input) to (output) maximum clock frequency f max 2.5 0.2 135 mhz 2.7 135 3.3 0.3 135 propagation delay time t plh 2.5 0.2 2.5 6.9 ns clk b t phl 2.7 6.4 3.3 0.3 1.7 5.6 2.5 0.2 2.2 6.4 clk a 2.7 6.0 3.3 0.3 1.6 5.2 2.5 0.2 2.4 7.2 sel a 2.7 7.0 3.3 0.3 1.6 6.0 output enable time t zh 2.5 0.2 2.1 7.9 ns clk a or b t zl 2.7 7.4 3.3 0.3 1.6 6.5 output disable time t hz 2.5 0.2 3.0 7.8 ns clk a or b t lz 2.7 7.1 3.3 0.3 1.7 6.2 input capacitance c in 3.3 3.5 pf control inputs output capacitance c in / o 3.3 9.0 pf a or b ports
HD74ALVCH162270 9 switching characteristics (ta = ?0 to 85?) (cont) item symbol v cc (v) min typ max unit from (input) setup time t su 2.5 0.2 4.1 ns a data before clk - 2.7 3.8 3.3 0.3 3.1 2.5 0.2 0.9 b data before clk - 2.7 1.2 3.3 0.3 0.9 2.5 0.2 3.5 clkena1 or 2.7 3.2 clkena2 before clk - 3.3 0.3 2.7 2.5 0.2 3.4 clken1b or 2.7 3.0 clken2b before clk - 3.3 0.3 2.6 2.5 0.2 4.4 oe before clk - 2.7 3.9 3.3 0.3 3.2 hold time t h 2.5 0.2 0 ns a data after clk - 2.7 0 3.3 0.3 0.2 2.5 0.2 1.4 b data after clk - 2.7 1.0 3.3 0.3 1.7 2.5 0.2 0 clkena1 or 2.7 0.1 clkena2 after clk - 3.3 0.3 0.3 2.5 0.2 0 clken1b or 2.7 0 clken2b after clk - 3.3 0.3 0.6 2.5 0.2 0 oe after clk - 2.7 0 3.3 0.3 0.1 pulse width t w 2.5 0.2 3.3 ns clk ??or ? 2.7 3.3 3.3 0.3 3.3
HD74ALVCH162270 10 500 w c = 50 pf l l 500 w s1 *1 see under table gnd open load circuit for outputs note: 1. c includes probe and jig capacitance. symbol t / t plh phl open gnd 4.6 v 6.0 v t / t zh hz t / t zl lz t / t / t su h w open gnd vcc=2.7v, 3.3 0.3v vcc=2.5 0.2v ?test circuit
HD74ALVCH162270 11 t plh t phl t su t h v oh v ol t w gnd v ih gnd v ih gnd v ih gnd v ih v ref r v ref v ref v ref v ref v ref v ref v ref v ref input output timing input data input input ?waveforms ?1 ?waveforms ?2 10 % 90 % t r t f t 10 % 90 % 10 % 90 %
HD74ALVCH162270 12 v ?0.3 v oh v + 0.3 v ol t zl t lz t zh t hz v oh v ol waveform - a output control waveform - b gnd v ih ? v ol1 ? v oh1 v ref v ref v ref v ref test v ih v ref v oh1 v ol1 1.2 v 1.5 v 2.3 v 3.0 v gnd 2.3 v 2.7 v gnd vcc=2.7v, 3.3 0.3v vcc=2.5 0.2v notes: 1. all input pulses are supplied by generators having the following characteristics: prr 10 mhz, zo = 50 w , tr 2.5 ns, tf 2.5 ns. 2. waveform ?a is for an output with internal conditions such that the output is low except when disabled by the output control. 3. waveform ?b is for an output with internal conditions such that the output is high except when disabled by the output control. 4. the output are measured one at a time with one transition per measurement. ?waveforms ?3 10 % 10 % 90 % 90 % f t r t
HD74ALVCH162270 13 package dimensions unit : mm hitachi code eiaj code jedec code ttp-56d 0.08 m 0.10 0.20 0.15 0.05 8.10 0.3 0.40 max 128 29 56 +0.1 ?.05 +0.3 ?.1 14.00 +0.3 ?.1 6.10 1.20 max 10 max 0.50 0.05 min 0.50 0.1
cautions 1. hitachi neither warrants nor grants licenses of any rights of hitachi?s or any third party?s patent, copyright, trademark, or other intellectual property rights for information contained in this document. hitachi bears no responsibility for problems that may arise with third party?s rights, including intellectual property rights, in connection with use of the information contained in this document. 2. products and product specifications may be subject to change without notice. confirm that you have received the latest product standards or specifications before final design, purchase or use. 3. hitachi makes every attempt to ensure that its products are of high quality and reliability. however, contact hitachi?s sales office before using the product in an application that demands especially high quality and reliability or where its failure or malfunction may directly threaten human life or cause risk of bodily injury, such as aerospace, aeronautics, nuclear power, combustion control, transportation, traffic, safety equipment or medical equipment for life support. 4. design your application so that the product is used within the ranges guaranteed by hitachi particularly for maximum rating, operating supply voltage range, heat radiation characteristics, installation conditions and other characteristics. hitachi bears no responsibility for failure or damage when used beyond the guaranteed ranges. even within the guaranteed ranges, consider normally foreseeable failure rates or failure modes in semiconductor devices and employ systemic measures such as fail- safes, so that the equipment incorporating hitachi product does not cause bodily injury, fire or other consequential damage due to operation of the hitachi product. 5. this product is not designed to be radiation resistant. 6. no one is permitted to reproduce or duplicate, in any form, the whole or part of this document without written approval from hitachi. 7. contact hitachi?s sales office for any questions regarding this document or hitachi semiconductor products. hitachi, ltd. semiconductor & integrated circuits. nippon bldg., 2-6-2, ohte-machi, chiyoda-ku, tokyo 100-0004, japan tel: tokyo (03) 3270-2111 fax: (03) 3270-5109 copyright ? hitachi, ltd., 1999. all rights reserved. printed in japan. hitachi asia pte. ltd. 16 collyer quay #20-00 hitachi tower singapore 049318 tel: 535-2100 fax: 535-1533 url northamerica : http:semiconductor.hitachi.com/ europe : http://www.hitachi-eu.com/hel/ecg asia (singapore) : http://www.has.hitachi.com.sg/grp3/sicd/index.htm asia (taiwan) : http://www.hitachi.com.tw/e/product/sicd_frame.htm asia (hongkong) : http://www.hitachi.com.hk/eng/bo/grp3/index.htm japan : http://www.hitachi.co.jp/sicd/indx.htm hitachi asia ltd. taipei branch office 3f, hung kuo building. no.167, tun-hwa north road, taipei (105) tel: <886> (2) 2718-3666 fax: <886> (2) 2718-8180 hitachi asia (hong kong) ltd. group iii (electronic components) 7/f., north tower, world finance centre, harbour city, canton road, tsim sha tsui, kowloon, hong kong tel: <852> (2) 735 9218 fax: <852> (2) 730 0281 telex: 40815 hitec hx hitachi europe ltd. electronic components group. whitebrook park lower cookham road maidenhead berkshire sl6 8ya, united kingdom tel: <44> (1628) 585000 fax: <44> (1628) 778322 hitachi europe gmbh electronic components group dornacher strae 3 d-85622 feldkirchen, munich germany tel: <49> (89) 9 9180-0 fax: <49> (89) 9 29 30 00 hitachi semiconductor (america) inc. 179 east tasman drive, san jose,ca 95134 tel: <1> (408) 433-1990 fax: <1>(408) 433-0223 for further information write to:

▲Up To Search▲

Price & Availability of HD74ALVCH162270

	To Download HD74ALVCH162270 Datasheet File
If you can't view the Datasheet, Please click here to try to view without PDF Reader .