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december 2009 doc id 16772 rev 1 1/23 23 STMUX1800E 16-bit to 8-bit mux/demux fo r gigabit ethernet lan switch with led switch and enhanced esd protection features low r on : 4.0 typical v cc operating range: 3.0 to 3.6 v enhanced esd protection: > 8 kv (contact) and 15 kv (hbm) low power mode for minimum power consumption channel on capacitance: 9.5 pf typical switching time speed: 9 ns near to zero propagation delay: 250 ps very low crosstalk: -45 db at 250 mhz bit-to-bit skew: 200 ps > 600 mhz -3 db typical bandwidth (or data frequency) three spdt switches for led support rail-to-rail switchin g on data i/o ports (0 v to 5 v) package: qfn42 pb-free applications 10/100/1000 mbit ethernet switching audio/video switching description the STMUX1800E is a 16 to 8-bit multiplexer/demultiplexer low r on bidirectional lan switch designed for various standards, such as 10/100/1000 ethernet. it is designed for very low crosstalk, low bit-to-bit skew and low i/o capacitance. the differential signal from the gigabit ethernet transceiver is multiplexed into one of two selected outputs while the unselected switch goes to hi-z status. the device integrates three spdt (single pole dual throw) switches, for led support. the device can be put into low power mode consuming minimum power. qfn42 table 1. device summary order code package packing STMUX1800Eqtr qfn42 tape and reel www.st.com
contents STMUX1800E 2/23 doc id 16772 rev 1 contents 1 pin description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 2 maximum rating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 2.1 recommended operating conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 3 electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 4 package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 5 revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
STMUX1800E pin description doc id 16772 rev 1 3/23 1 pin description figure 1. pin connection (top through view) table 2. pin description pin symbol name and function 2, 3, 6, 7, 9, 10, 11, 12 a, b, c, d, e, f, g, h 8-bit bus 38, 37, 34, 33, 29, 28, 25, 24 a0, b0, c0, d0, e0, f0, g0, h0 8-bit multiplexed to bus 0 36, 35, 32, 31, 27, 26, 23, 22 a1, b1, c1, d1, e1, f1, g1, h1 8-bit multiplexed to bus 1 5 lp low power mode enable 13 sel bus and led switch selection 15, 16, 42 led1, led2, led3 led switch input 17, 18, 41, 19, 20, 40 led1_0, led2_0, led3_0, led1_1, led2_1, led3_1 led switch output 1, 4, 8, 14, 21, 30, 39 v dd supply voltage 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 42 41 40 39 38 37 36 35 34 33 32 31 28 27 26 25 24 23 22 30 29 vdd a b vdd lp c d gnd vdd e f g h sel vdd led1 led2 led1_0 led2_0 led1_1 led2_1 vdd h1 h0 g1 g0 f1 f0 e1 e0 vdd d1 d0 c1 c0 b1 b0 a1 a0 vdd led3_0 led3_1 led3 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 42 41 40 39 38 37 36 35 34 33 32 31 28 27 26 25 24 23 22 30 29 vdd a b vdd lp c d gnd vdd e f g h sel vdd led1 led2 led1_0 led2_0 led1_1 led2_1 vdd h1 h0 g1 g0 f1 f0 e1 e0 vdd d1 d0 c1 c0 b1 b0 a1 a0 vdd led3_0 led3_1 led3
pin description STMUX1800E 4/23 doc id 16772 rev 1 figure 2. input equivalent circuit am0412 3 v1 lp low power m a n a gement
STMUX1800E pin description doc id 16772 rev 1 5/23 table 3. lan switch function table lp sel function l l 8-bit bus to 8-bit multiplexed bus 0 l h 8-bit bus to 8-bit multiplexed bus 1 h x bus 0 and 1 in hi-z table 4. led switch function table lp sel function l l led switch input connected to led switch output x_0 l h led switch input connected to led switch output x_1 h x output x_0 and x_1 in hi-z
maximum rating STMUX1800E 6/23 doc id 16772 rev 1 2 maximum rating stressing the device above the rating listed in the ?absolute maximum ratings? table may cause permanent damage to the device. these are stress ratings only and operation of the device at these or any other conditions above those indicated in the operating sections of this specification is not imp lied. exposure to absolute ma ximum rating conditions for extended periods may affect device reliability. 2.1 recommended operating conditions table 5. absolute maximum ratings symbol parameter value unit v cc supply voltage to ground -0.5 to 4.6 v v io dc input output voltage -0.5 to 4.6 v v ic dc control input voltage -0.5 to 4.6 v i o dc output current (1) 1. if v io x i o does not exceed the maximum limit of p d . 120 ma p d power dissipation 0.5 w t stg storage temperature -65 to 150 c t l lead temperature (10 sec) 300 c table 6. recommended operating conditions symbol parameter value unit min typ max v cc supply voltage to ground 3 - 3.6 v v ic dc control input voltage (sel, lp) 0 - v cc v v io dc input/output voltage 0 - v cc v t a operating temperature -40 - 85 c
STMUX1800E electrical characteristics doc id 16772 rev 1 7/23 3 electrical characteristics table 7. dc electrical characteristics for gigabit ethernet lan8/16mux/demux (v cc = 3.3 v 10%) symbol parameter test condition value unit -40 to 85 c min typ max v ih voltage input high (sel, lp) high level guaranteed 2.4 - - v v il voltage input low (sel, lp) low level guaranteed -0.5 - 0.8 v v ik clamp diode voltage (sel, lp) v cc = 3.6 v i in = -18 ma - -0.8 -1.2 v i ih input high current (sel, lp) v cc = 3.6 v v in = v cc --5a i il input low current (sel, lp) v cc = 3.6 v v in = gnd --5a ioff (sw) (1) leakage current through the switch common terminals (a to h) (led1 to led3) v cc = 3.6 v a to h = v cc led1 to led3 = v cc a0 to h0 = 0 v a1 to h1 = floating ledx_0 = 0 v ledx1 = floating sel = v cc lp = gnd --1a ioff(sw_lp) leakage current through the switch in lp mode vcc = 3.6 v; a to h = vcc; led1 to led3 = vcc; a0 to h0, a1 to h1 = 0v; ledx_0, ledx_1 = 0v lp = vcc 10 a ioff (sel) sel pin leakage current v cc = 0 v sel = 0 to 3.6 v --1a r on switch on resistance (2) v cc = 3.0 v v in = 1.5 to v cc i in = -40 ma -4.06.5
electrical characteristics STMUX1800E 8/23 doc id 16772 rev 1 r flat on resistance flatness (2) (3) v cc = 3.0 v v in at 1.5 and vcc i in = -40 ma -0.5- r on on resistance match between channel r on = r onmax -r onmin (2)(4) v cc = 3.0 v v in = 1.5 to v cc i in = -40 ma -0.41 1. refer to figure 4: test circuit for leakage current (ioff) on page 12 2. measured by voltage drop between channels at indicated curr ent through the switch. on resistance is determined by the lower of the voltages. 3. flatness is defined as the difference between the r onmax and r onmin of on resistance over the specified range. 4. r on measured at same v cc , temperature and voltage level. table 7. dc electrical characteristics for gigabit ethernet lan8/16mux/demux (v cc = 3.3 v 10%) (continued) symbol parameter test condition value unit -40 to 85 c min typ max table 8. dc electrical characteristics for 10/100 ethernet lan8/16mux/demux (v cc = 3.3 v 10) symbol parameter test condition value unit -40 to 85 c min typ max v ih voltage input high (sel, lp) high level guaranteed 2.4 - - v v il voltage input low (sel, lp) low level guaranteed -0.5 - 0.8 v v ik clamp diode voltage (sel, lp) v cc = 3.6 v i in = -18 ma - -0.7 -1.2 v i ih input high current (sel, lp) v cc = 3.6 v v in = v cc --5a i il input low current (sel, lp) v cc = 3.6 v v in = gnd --5a ioff (sw) (1) leakage current through the switch common terminals (a to h) (led1 to led3) v cc = 3.6 v a to h = v cc led1 to led3 = v cc a0 to h0 = 0 v a1 to h1 = floating ledx_0 = 0 v ledx1 = floating sel = v cc lp = gnd --1a
STMUX1800E electrical characteristics doc id 16772 rev 1 9/23 ioff(sw_lp) leakage current through the switch in lp mode v cc = 3.6 v; a to h = v cc ; led1 to led3 = v cc ; a0 to h0, a1 to h1 = 0v; ledx_0, ledx_1 = 0v lp = v cc 10 a ioff (sel) sel pin leakage current v cc = 0 v sel = 0 to 3.6 v --1a r on switch on resistance (2) v cc = 3.0 v v in = 1.5 to v cc i in = -10 to -30 ma -4.06.5 r flat on resistance flatness (2) (3) v cc = 3.0 v v in at 1.5 and v cc i in = -10 to -30 ma -0.5- r on on resistance match between channel r on = r onmax - r onmin (2)(4) v cc = 3.0 v v in = 1.5 to v cc i in = -10 to -30 ma -0.41 1. refer to figure 4: test circuit for leakage current (ioff) on page 12 2. measured by voltage drop between channels at indicated curr ent through the switch. on resistance is determinate by the lower of the two voltages. 3. flatness is defined as the difference between the r onmax and r onmin of on resistance over the specified range. 4. r on measured at same v cc , temperature and voltage level. table 8. dc electrical characteristics for 10/100 ethernet lan8/16mux/demux (v cc = 3.3 v 10) (continued) symbol parameter test condition value unit -40 to 85 c min typ max
electrical characteristics STMUX1800E 10/23 doc id 16772 rev 1 table 9. capacitance (t a = 25 c, f = 1 mhz) table 10. power supply characteristics table 11. dynamic electrical characteristics (v cc = 3.3 v 10%) symbol parameter test condition value unit min typ max c in sel pin input capacitance (1) 1. refer to figure 5 on page 13 dc = 0.25 v ac = 0.5 v pp f=1mhz -23pf c off switch off capacitance (2) 2. refer to figure 6 on page 13 dc = 0.25 v ac = 0.5 v pp f=1mhz -45pf c on switch on capacitance (3) 3. refer to figure 7 on page 14 dc = 0.25 v ac = 0.5 v pp f=1mhz - 9.5 11 pf symbol parameter test condition value unit -40 to 85 c min typ max i cc active mode power supply current v cc = 3.6 v, v in = v cc or gnd, lp=gnd - 150 500 a low power mode power supply current v cc = 3.6 v, v in = v cc or gnd, lp=v cc -1015 a symbol parameter test condition value unit -40 to 85 c min typ max x talk crosstalk (1) 1. refer to figure 9 on page 15 r l = 100 f = 250 mhz --45-db o irr off isolation (2) 2. refer to figure 10 on page 16 r l = 100 f = 250 mhz --37-db bw -3 db bandwidth (3) 3. refer to figure 8 on page 14 r l = 100 0 < v in 3.6 v - 600 - mhz
STMUX1800E electrical characteristics doc id 16772 rev 1 11/23 table 12. switching characteristics (t a = 25 c, v cc = 3.3 v 10 % ) table 13. esd performance symbol parameter test condition value unit min typ max t pd propagation delay v cc = 3 to 3.6 v - 0.25 - ns t pzh , t pzl line enable time, se to x to x0 or x to x1 v cc = 3 to 3.6 v 0.5 6.5 15 ns t phz , t plz line disable time, se to x to x0 or x to x1 v cc = 3 to 3.6 v 0.5 6.5 8.5 ns t sk(o) output skew between center port to any other port v cc = 3 to 3.6 v - 0.1 0.2 ns t sk(p) skew between opposite transition of the same output (t phl , t plh ) v cc = 3 to 3.6 v - 0.1 0.2 ns symbol test condition value unit min typ max esd contact discharge (1) iec61000-4-2 1. refer to figure 3: diagram for suggested vdd decoupling on page 12 . -8-kv human body model (mil-std-883) -15-kv
electrical characteristics STMUX1800E 12/23 doc id 16772 rev 1 figure 3. diagram for suggested v dd decoupling 1. applicable for system level esd test figure 4. test circuit for leakage current (i off ) 1 4 6 9 10 13 16 18 gnd vdd gnd gnd vdd gnd gnd vdd 21 24 27 28 33 38 39 44 dut 49 50 53 55 56 gnd vdd gnd gnd gnd gnd vdd gnd vdd gnd gnd vdd gnd note: 100nf capacitors must be used as local bypass capacitors between the adjacent vdd and gnd pairs (total 7) c=2uf or 4.7uf i off(sw) sel vdd gnd 3.6 v 3.6 v 3.6 v a0 a1 a float
STMUX1800E electrical characteristics doc id 16772 rev 1 13/23 figure 5. test circuit for sel pin input capacitance (c in ) figure 6. test circuit for switch off capacitance (c off ) lcr meter dc = 0.25 v ac = 0.5 vpp f = 1 mhz dut s el 3 . 3 v vdd gnd lcr meter dc = 0.25 v ac = 0.5 vpp f = 1 mhz dut s el 3 . 3 v vdd gnd l or h h for ch a nnel 0 a nd l for ch a nnel 1 a a0 a1
electrical characteristics STMUX1800E 14/23 doc id 16772 rev 1 figure 7. test circuit for switch on capacitance (c on ) figure 8. test circuit for bandwidth measurement (bw) frequency response is measured at the output of the on channel. for example, when v sel = 0 and a is the input, the output is measured at a0. all unused analog i/o ports are left open. hp8753es setup: average = 4 r bw = 3 khz v bias = 0.35 v st = 2 s p1 = 0 dbm lcr meter dc = 0.25 v ac = 0.5 vpp f = 1 mhz dut s el 3 . 3 v vdd gnd l or h l for ch a nnel 0 a nd h for ch a nnel 1 a a0 a1 aa0
STMUX1800E electrical characteristics doc id 16772 rev 1 15/23 figure 9. test circuit for crosstalk measurement (x talk ) crosstalk is measured at the output of the non-adjacent on channel. for example, when v sel = 0, and b is the input, the output is measured at d. all unused analog input ports are connected to gnd and output ports are left open. hp8753es setup: average = 4 r bw = 3 khz v bias = 0.35 v st = 2 s p1 = 0 dbm a b c d a0 b0 a1 b1 c0 d0 c1 d1 dut
electrical characteristics STMUX1800E 16/23 doc id 16772 rev 1 figure 10. test circuit for off isolation measurement (o irr ) off isolation is measured at the output of the off channel. for example, when v sel =0, and b is the input, the output is measured at b1. all unused analog input ports are connected to gnd and output ports are left open. hp8753es setup: average = 4 r bw = 3 khz v bias = 0.35 v st = 2 s p1 = 0 dbm a a0 b0 b a1 b1
STMUX1800E package mechanical data doc id 16772 rev 1 17/23 4 package mechanical data in order to meet environmental requirements, st offers these devices in different grades of ecopack ? packages, depending on their level of environmental compliance. ecopack ? specifications, grade definitions and product status are available at: www.st.com . ecopack ? is an st trademark. figure 11. package outline for qfn42 (3.5 x 9 x 0.75) - pitch 0.5 mm
package mechanical data STMUX1800E 18/23 doc id 16772 rev 1 table 14. mechanical data for qfn42 (3.5 x 9 x 0.75) - pitch 0.5 mm symbol millimeters min typ max a 0.700.750.80 a1 0 0.02 0.05 a3 - 0.20 - b 0.200.250.30 d 3.403.503.60 d2 2 2.05 2.10 e8.9099.10 e2 7.50 7.55 7.60 e - 0.50 - l 0.300.400.50
STMUX1800E package mechanical data doc id 16772 rev 1 19/23 figure 12. footprint recommendation for qfn42 (3.5 x 9 x 0.75) - pitch 0.5 mm
package mechanical data STMUX1800E 20/23 doc id 16772 rev 1 figure 13. carrier tape information for qfn42 (3.5 x 9 x 0.75) - pitch 0.5 mm
STMUX1800E package mechanical data doc id 16772 rev 1 21/23 figure 14. reel information for qfn42 (3.5 x 9 x 0.75) - pitch 0.5 mm
revision history STMUX1800E 22/23 doc id 16772 rev 1 5 revision history table 15. document revision history date revision changes 09-dec-2009 1 initial release.
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