PL135-47 Low Power, 1.62V to 3.63V, 10MHz to 40MHz, 1:4 Oscillator Fanout Buffer FEATURES DESCRIPTION The PL135-47 is an advanced oscillator fanout buffer Advanced Oscillator Design for Wide Frequency design for high performance, low-power, small form- Coverage factor applications. The PL135-47 accepts a 4 LVCMOS Outputs with Individual OE Control fundamental input crystal of 10MHz to 40MHz and 8mA Output Drive Strength produces four outputs of the same frequency, each Input/Output Frequency: with its own Output Enable pin. o Fundamental Crystal: 10MHz to 40MHz Very Low Jitter and Phase Noise Offered in a small 3 x 3mm QFN or TSSOP package, Low Current Consumption the PL135-47 offers the best phase noise and jitter Single 1.62V to 3.63V Power Supply performance and lowest power consumption of any Available in QFN-16L and TSSOP-16L comparable IC. GREEN/RoHS Compliant Packages PACKAGE PIN CONFIGURATION 1 16 XIN XOUT 12 11 10 9 2 15 GND VDD OE3 13 8 CLK2 3 14 OE3 CLK2 CLK3 14 7 OE2 4 13 CLK3 OE2 15 6 VDD GND 5 12 VDD GND OE0 16 5 CLK1 6 11 1 2 3 4 OE0 CLK1 7 10 CLK0 OE1 8 9 VDD GND QFN TSSOP BLOCK DIAGRAM CLK0 OE0 OE1 CLK1 XIN XTAL OSC XOUT CLK2 OE2 OE3 CLK3 Micrel Inc. 2180 Fortune Drive San Jose, CA 95131 USA tel +1( 408) 944-0800 fax +1(408) 474-1000 www.micrel.com Rev 02/14/11 Page 1 CLK0 GND VDD XIN GND XOUT OE1 VDD PL135-47 Low Power, 1.62V to 3.63V, 10MHz to 40MHz, 1:4 Oscillator Fanout Buffer PACKAGE PIN ASSIGNMENT Package Pin Name Type Description QFN-16L (T)SSOP-16L CLK0 1 7 O Output clock VDD 2, 9, 15 5, 8, 15 P V connection DD GND 3, 6, 12 2, 9, 12 P GND connection Output enable (OE) input for CLK1. Internal pull-up. OE1 4 10 I* Pull low to tri-state CLK1. CLK1 5 11 O Output clock Output enable (OE) input for CLK2. Internal pull-up. OE2 7 13 I* Pull low to tri-state CLK2. CLK2 8 14 O Output clock Crystal output. Do not connect when using a reference XOUT 10 16 O clock. XIN 11 1 I Crystal input Output enable (OE) input for CLK3. Internal pull-up. OE3 13 3 I* Pull low to tri-state CLK3. CLK3 14 4 O Output clock Output enable (OE) input for CLK0. Internal pull-up. OE0 16 6 I* Pull low to tri-state CLK0. * Note: These pins include an internal 60K pull up. Micrel Inc. 2180 Fortune Drive San Jose, CA 95131 USA tel +1( 408) 944-0800 fax +1(408) 474-1000 www.micrel.com Rev 02/14/11 Page 2