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ASM2P20807A Dataheets PDF



Part Number ASM2P20807A
Manufacturers Alliance Semiconductor
Logo Alliance Semiconductor
Description 2.5V CMOS 1-TO-10 CLOCK DRIVER
Datasheet ASM2P20807A DatasheetASM2P20807A Datasheet (PDF)

June 2005 rev 0.2 ASM2P20807A 2.5V CMOS 1-TO-10 CLOCK DRIVER Features • High frequency > 150MHz • Guaranteed low skew < 150pS (max.) between any two outputs • Very low duty cycle distortion < 300pS • High speed: propagation delay < 3nS • Very low CMOS power levels • TTL compatible inputs and outputs • 1:10 fanout • Maximum output rise and fall time < 1.25nS (max.) • Low input capacitance: 3pF (typ) • 2.5V Supply Voltage • Available in SSOP and QSOP Packages Block Diagram Product Description T.

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June 2005 rev 0.2 ASM2P20807A 2.5V CMOS 1-TO-10 CLOCK DRIVER Features • High frequency > 150MHz • Guaranteed low skew < 150pS (max.) between any two outputs • Very low duty cycle distortion < 300pS • High speed: propagation delay < 3nS • Very low CMOS power levels • TTL compatible inputs and outputs • 1:10 fanout • Maximum output rise and fall time < 1.25nS (max.) • Low input capacitance: 3pF (typ) • 2.5V Supply Voltage • Available in SSOP and QSOP Packages Block Diagram Product Description The ASM2P20807A is a 2.5V compatible, high speed, low noise, 1:10 fanout, non-inverting clock buffer. The large fanout from a single input reduces loading on the preceding driver and provides an efficient clock distribution network. Providing output to output skew as low as 150pS, the ASM20807A is an ideal clock distribution device for synchronous systems. Multiple power and grounds reduce noise. Typical applications are clock and signal distribution. O1 O2 O3 O4 O5 IN O6 O7 O8 O9 O10 Alliance Semiconductor 2575, Augustine Drive • Santa Clara, CA • Tel: 408.855.4900 • Fax: 408.855.4999 • www.alsc.com Notice: The information in this document is subject to change without notice. June 2005 ASM2P20807A rev 0.2 Pin Configuration Pin Description Pin # 1 3,5,7,9,11,12,14,16,18,19 2,6,10,13,17 4,8,15,20 IN GND O1 VCC O2 GND O3 VCC O4 GND 1 20 2 A 19 3 S 18 4 M 17 2 5 P 16 2 6 0 15 7 8 14 0 8 7 13 9 A 12 10 11 SSOP/ QSOP PACKAGE TOP VIEW VCC O10 O9 GND O8 VCC O7 GND 06 O5 Pin Names IN O1-O10 GND VCC Description Clock Input Clock Outputs Ground Power supply Capacitance (TA = +25°C, f = 1.0MHz) Symbol CIN Parameter1 Input Capacitance Conditions VIN = 0V NOTE:1. This parameter is measured at characterization but not tested. Typ Max Unit 3 4 pF Absolute Maximum Ratings1 Symbol VTERM2 VTERM3 VTERM4 Description Terminal Voltage with Respect to GND Terminal Voltage with Respect to GND Terminal Voltage with Respect to GND Max -0.5 to +4.6 -0.5 to +5.5 -0.5 to VCC+0.5 Unit V V V TSTG Storage Temperature -65 to +150 °C IOUT DC Output Current -60 to +60 mA NOTES: 1. These are stress ratings only and are not implied for functional use. Exposure to absolute maximum ratings for prolonged periods of time may affect device reliability. 2. VCC terminals. 3. Input terminals. 4. Outputs and I/O terminals. 2.5V CMOS 1-TO-10 CLOCK DRIVER Notice: The information in this document is subject to change without notice. 2 of 11 June 2005 ASM2P20807A rev 0.2 Power Supply Characteristics Symbol ICCL ICCH ∆ICC Parameter Quiescent Power Supply Current TTL Inputs HIGH Power Supply Current per Input HIGH ICCD Dynamic Power Supply Current per Output3 Test Conditions1 VCC= Max VIN = GND or VCC VCC= Max VIN = VCC -0.6V VCC= 2.7V and 15 pF load 150 MHz Min Typ2 Max - 0.1 20 - 45 300 - 40 - IC Total Power Supply VCC= Max. Current4 CL= 12pF VIN= VCC VIN= GND - 65 All outputs toggling fi = 150MHz VIN= VCC –0.6V VIN= GND - 75 NOTES: 1. For conditions shown as Max. or Min., use appropriate value specified under Electrical Characteristics for the applicable device type. 2. Typical values are at VCC = 2.5V, +25°C ambient. 3. This parameter is not directly testable, but is derived for use in Total Power Supply calculations. 4. IC = IQUIESCENT + IINPUTS + IDYNAMIC IC = ICC + ∆ICC DHNT + ICCD (fi) ICC = Quiescent Current (ICCL, ICCH and ICCZ) ∆ICC = Power Supply Current for a TTL High Input (VIN = VCC -0.6V) DH = Duty Cycle for TTL Inputs High NT = Number of TTL Inputs at DH ICCD = Dynamic Current Caused by an Input Transition Pair (HLH or LHL) fi = Input Frequency 90 100 Unit µA µA µA /MHz mA 2.5V CMOS 1-TO-10 CLOCK DRIVER Notice: The information in this document is subject to change without notice. 3 of 11 June 2005 ASM2P20807A rev 0.2 DC Electrical Characteristics Over Operating Range Following Conditions Apply Unless Otherwise Specified Industrial: TA = -40°C to +85°C, VCC = 2.5V ± 0.2V Symbol VIH VIL IIH Parameter Test Conditions1 Input HIGH Level Input LOW Level Input HIGH (Input pins) Current VCC= Max, VI = VCC Min Typ2 1.7 -- -- IIL Input LOW (Input pins) Current VCC= Max, VI = GND -- VIK Clamp Diode Voltage VCC= Min, IIN = -18mA - -0.7 IODH Output HIGH Current VCC= 2.5V, VIN = VIH or VIL VO = 1.25V3 -25 -45 IODL Output LOW Current VCC= 2.5V, VIN = VIH or VIL VO = 1.25V3 20 55 Output HIGH Voltage VOH VCC= Min VIN = VIH or VIL IOH = -1mA IOH = -8mA VCC–0.2 1.85 - VOL Output LOW Voltage VCC= Min IOL = 1mA - - VIN = VIH or VIL IOL = 8mA IOS Short Circuit Current4 VCC= Max., VO = GND3 --25 -60 NOTES: 1. For conditions shown as Max or Min, use appropriate value specified under Electrical Characteristics for the applicable device type. 2. Typical values are at Vcc = 2.5V, +25°C ambient. 3. Not more than one output should be shorted at one time. Duration of the test should not exceed one second. 4. This parameter is guaranteed but not tested. 5. VOH = Vcc - 0.6V at rated curre.


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