1 www.pericom.com 03/25/14 features ? 8 differential channel (2-lane) exchange switch ? pci express ? 2.0 performance, 5.0 gbps ? low bit-to-bit skew: 10ps (between +/- signals) ? low crosstalk: -28db @ 2.5 ghz (5gbps) ? low insertion loss: -2.1db @ 2.5 ghz (5gbps) ? v dd operating range: +1.5v to +1.8v 10% ? esd tolerance: 2kv hbm ? packaging: 42-contact tqfn (zh42) description pericom semiconductors pi2pcie2442 is a differential exchange switch featuring pass-through pinout. it supports two full pci express lanes operating at 5.0gbps pcie ? 2.0 performance. with the select control input low, port a connects to port b, and port c connects to port d for an 8-channel differential pass-though. when the select control input is high port a connects to port d, and port b connects to port c. block diagram truth table function sel oe# ax = bx cx = dx l 0 ax = dx cx =bx h 0 ax, bx, cx, dx = hi-z x 1 pin diagram 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 38 37 36 35 34 33 32 31 30 29 28 27 26 25 24 23 22 b0+ b0- d0+ d0- b1+ b1- d1+ d1- vdd b2+ b2- d2+ d2- b3+ b3- d3+ d3- a0+ a0- c0+ c0- a1+ a1- c1+ c1- sel a2+ a2- c2+ c2- a3+ a3- c3+ c3- 18 19 20 21 vdd oe# vdd gnd vdd gnd vdd gnd 42 41 40 39 gnd a0+ a0- c0+ c0- b0+ b0- d0+ d0- a1+ a1- c1+ c1- b1+ b1- d1+ d1- a2+ a2- c2+ c2- b2+ b2- d2+ d2- a3+ a3- c3+ c3- b3+ b3- d3+ d3- sel oe# pi2pcie2442 pci express? 2.0, 2-lane exchange switch 14-0034
2 www.pericom.com 03/25/14 pin description pin # pin name i/o description 1 2 a0+ a0C i/o signal i/o, channel 0, port a 5 6 a1+ a1C i/o signal i/o, channel 1, port a 10 11 a2+ a2C i/o signal i/o, channel 2, port a 14 15 a3+ a3C i/o signal i/o, channel 3, port a 38 37 b0+ b0? i/o signal i/o, channel 0, port b 34 33 b1+ b1? i/o signal i/o, channel 1, port b 29 28 b2+ b2? i/o signal i/o, channel 2, port b 25 24 b3+ b3? i/o signal i/o, channel 3, port b 3 4 c0+ c0C i/o signal i/o, channel 0, port c 7 8 c1+ c1C i/o signal i/o, channel 1, port c 12 13 c2+ c2C i/o signal i/o, channel 2, port c 16 17 c3+ c3? i/o signal i/o, channel 3, port c 36 35 d0+ d0? i/o signal i/o, channel 0, port d 32 31 d1+ d1? i/o signal i/o, channel 1, port d 27 26 d2+ d2? i/o signal i/o, channel 2, port d 23 22 d3+ d3? i/o signal i/o, channel 3, port d 41 oe# i output enable, active low. when oe# = 0 the device i/o is enabled. when oe#=1, all i/o are high impedance 9 sel i operation mode select (when sel=0: a b, c d, when sel=1: a d, cb) 18, 20, 30, 40, 42 v dd pwr 1.5v to 1.8v (0.1v) positive supply voltage 19, 21, 39, center pad gnd pwr power ground pi2pcie2442 pci express ? 2.0, 2-lane exchange switch 14-0034
3 www.pericom.com 03/25/14 storage temperature ....................................................... C65c to +150c supply voltage to ground potential ................................... C0.5v to +2.5v dc input voltage .................................................................. C0.5v to v dd dc output current .......................................................................... 120ma power dissipation .............................................................................. 0.5w note: stresses greater than those listed under maximum ratings may cause permanent damage to the device. this is a stress rating only and functional operation of the device at these or any other conditions above those indicated in the operational sections of this specifcation is not implied. ex- posure to absolute maximum rating conditions for extended periods may affect reliability. maximum ratings (above which useful life may be impaired. for user guidelines, not tested.) dc electrical characteristics for switching over operating range (t a = C40c to +85c, v dd = 1.5v to 1.8v 10%) parameter description test conditions min typ (1) max units v ih input high voltage, sel and oe# guaranteed high level 0.65 x v dd v v il input low voltage, sel and oe# guaranteed low level C0.5 0.35 x v dd v ik clamp diode voltage, sel and oe# v dd = max., i in = C18ma C0.7 C1.2 i ih input high current, sel and oe# v dd = max., v in = v dd 5 a i il input low current, sel and oe# v dd = max., v in = gnd 5 vi dc dc signal voltage range, channel i/o (a x , b x , c x , d x) v o /v i >95%, r l = 10k-ohms C0.4 2.5 v v o /v i >80%, r l = 50-ohms C0.3 1.2 r on channel on resistance v dd = min., v in = 1.3v, i in = 40ma 10 ohm c on(ab) channel on capacitance v in = 0, v dd = 1.8v 2.2 3.0 pf note: 1. t ypical values are at v dd = 1.8v, t a = 25c ambient and maximum loading. power supply characteristics parameters description test conditions (1) min. typ. (2) max. units i dd quiescent power supply current v dd = max., v in = gnd or v dd 400 a notes: 1. for max. or min. conditions, use appropriate value specifed under electrical characteristics for the applicable device type. 2. t ypical values are at v dd = 1.8v, t a = 25c ambient and maximum loading. pi2pcie2442 pci express ? 2.0, 2-lane exchange switch 14-0034
4 www.pericom.com 03/25/14 dynamic electrical characteristics over the operating range (t a = -40o to +85oc, v dd = 1.5v to 1.8v 10%) parameter description test conditions min. typ. (1) max. units bw bandwidth (-3db) 3.4 ghz v i f max signal fre- quency range insertion loss 1.5db, v in =0.6vpp, dc=0v 1.6 ghz insertion loss 1.5db, v in =0.6vpp, dc=0.9v 1.6 insertion loss 3db, v in =0.6vpp, dc=0v 3.0 insertion loss 3db, v in =0.6vpp, dc=0.9v 3.0 p-1db 1 db compression input signal r l = 50, f=625mhz, sin wave, dc=0v 1.2 vpp r l = 50, f=625mhz, sin wave, dc=0.45v 2.0 r l = 50, f=625mhz, sin wave, dc=0.9v 2.4 r loss return loss f = 2.5 ghz -18 db x talk crosstalk f = 2.5 ghz C28 f = 100 mhz C60 o irr off isolation f = 2.5 ghz C22 f = 100 mhz C55 i loss differential inser- tion loss f = 2.5 ghz -2.1 notes: 1. guaranteed by design. typical values are at v dd = 1.8v, t a = 25c ambient and maximum loading. switching characteristics (t a = -40o to +85oc, v dd = 1.5v to 1.8v 10%) paramenter description min. typ. max. units t pzh , t pzl line enable time - sel to a n , b n 0.5 8 ns t phz , t plz line disable time - sel to a n , b n 0.5 8 t b-b bit-to-bit skew within same differential pair 4 ps t ch -t ch channel-to-channel timing skew 35 pi2pcie2442 pci express ? 2.0, 2-lane exchange switch 14-0034
5 www.pericom.com 03/25/14 crosstalk (v dd = 1.8v, 25c) differential off isolation(v dd = 1.8v, t a = 25c) pi2pcie2442 pci express ? 2.0, 2-lane exchange switch 14-0034
6 www.pericom.com 03/25/14 insertion loss (v dd = 1.8v, 25c) differential return loss (v dd = 1.8v, 25 c) pi2pcie2442 pci express ? 2.0, 2-lane exchange switch 14-0034
7 www.pericom.com 03/25/14 + ? + ? balanced port1 dut + ? 50 50 + ? balanced port2 50 50 diff. near end xtalk test circuit + ? + ? balanced port1 balanced port2 dut + ? 50 50 diff. off isolation test circuit + ? + ? balanced port1 balanced port2 dut diff. insertion loss and return test circuit switching waveforms voltage waveforms enable and disable times t plz v dd /2 v dd /2 v dd v oh 0v v ol v dd/2 v oh ?0.3v v ol +0.3v v dd/2 t phz t pzl t pzh output output v ol v oh sel switch positions test switch t plz , t pzl 2 x v dd t phz , t pzh gnd prop delay open r t 4pf c l v dd v in v out 200-ohm 200-ohm 2 x v dd pulse generator d.u.t test circuit for electrical characteristics (1-5) notes: 1. c l = load capacitance: includes jig and probe capacitance. 2. r t = termination resistance: should be equal to z out of the pulse generator 3. output 1 is for an output with internal conditions such that the output is low except when disabled by the output control. output 2 is for an output with internal conditions such that the output is high except when disabled by the output control. 4. all input impulses are supplied by generators having the following characteristics: prr mhz, z o = 50?, t r 2.5ns, t f 2.5ns. 5. the outputs are measured one at a time with one transition per measurement. pi2pcie2442 pci express ? 2.0, 2-lane exchange switch 14-0034
8 www.pericom.com 03/25/14 ordering information ordering code package code package description PI2PCIE2442ZHEX zh 42-contact, thin fine pitch quad flat no-lead (tqfn) notes: 1. thermal characteristics can be found on the company web site at www .pericom.com/packaging/ 2. e = lead-free and green 2. x suffx = tape and reel pericom semiconductor corporation ? 1-800-435-2336 ? www .pericom.com date: 11/14/12 description: 42-contact thin fine pitch quad flat no-lead (tqfn) package code: zh42 document control #: pd-2035 revision:d notes: 1. all dimensions are in millimeters. angles in degrees. 2. coplanarity applies to the exposed pad as well as the terminals. 3. refer jedec mo-220. 4. recommended land pattern is for reference only. 5. thermal pad soldering area 12-0529 all trademarks are property of their respective owners. ? for latest package info, please check: http://www .pericom.com/products/packaging/mechanicals.php packaging mechanical: 42-contact tqfn (zh) pi2pcie2442 pci express ? 2.0, 2-lane exchange switch 14-0034
|
