View ASM2P20805A-20-DT_1213451.PDF datasheet online --- IC-ON-LINE

Datasheet File OCR Text:

June 2005 rev 0.2 2.5V CMOS Dual 1-To-5 Clock Driver
Features
Advanced CMOS Technology Guaranteed low skew < 200pS (max.) Very low propagation delay < 2.5nS (max) Very low duty cycle distortion < 270pS (max) Very low CMOS power levels Operating frequency up to 166MHz TTL compatible inputs and outputs Two independent output banks with 3-state control 1:5 fanout per bank "Heartbeat" monitor output VCC = 2.5V 0.2V Available in SSOP and QSOP packages
ASM2P20805A
Functional Description
The ASM2P20805A is a 2.5V Clock driver built using advanced CMOS technology. The device consists of two banks of drivers, each with a 1:5 fanout and its own output enable control. The device has a "heartbeat" monitor for diagnostics and PLL driving. The MON output is identical to all other outputs and complies with the output specifications in this document. The ASM2P20805A offers low capacitance inputs. The ASM2P20805A is designed for high speed clock distribution where signal quality and skew are critical. The ASM2P20805A also allows single point-topoint transmission line driving in applications such as address distribution, where one signal must be distributed to multiple receivers with low skew and high signal quality.
Block Diagram
Pin Diagram
OEA INA 5 OA1 - OA5
VCCA OA1 OA2 OA3 GNDA
1 2 3 4 5 6 7 8 9 10
20
VCCB OB1 OB2 OB3 GNDB OB4 OB5 MON OEB INB
INB OEB
5
OB1 - OB5
OA4 OA5 GNDQ
MON
OEA INA
A S M 2 P 2 0 8 0 5 A
19 18 17 16 15 14 13 12 11
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 rev 0.2
Pin Description Pin #
9,12 10,11 2,3,4,6,7 19,18,17,15,14 1 20 5 16 8 13
ASM2P20805A
Pin Names
OEA, OEB INA, INB OA1-OA5 OB1-OB5 VCCA VCCB GNDA GNDB GNDQ MON
Description
3-State Output Enable Inputs (Active LOW) Clock Inputs Clock Outputs Clock Outputs Power supply for Bank A Power supply for Bank B Ground for Bank A Ground for Bank B Ground Monitor Output
Function Table Inputs OEA, OEB
L L H H
Note: H = HIGH; L = LOW; Z = High-Impedance
Outputs INA, INB
L H L H
OAn, OBn
L H Z Z
MON
L H L H
Capacitance (TA = +25C, f = 1.0MHz) Symbol
CIN COUT
Parameter*
Input Capacitance Output Capacitance
Conditions
VIN= 0V VOUT = 0V
Typ
3 -
Max
4 6
Unit
pF pF
*This parameter is measured at characterization but not tested.
2.5V CMOS Dual 1-To-5 Clock Driver
Notice: The information in this document is subject to change without notice.
2 of 11
June 2005 rev 0.2
Absolute Maximum Ratings Symbol
VCC VI VO TJ Ts TSTG TDV
ASM2P20805A
Description
Input Power Supply Voltage Input Voltage Output Voltage Junction Temperature Max. Soldering Temperature (10 sec) Storage Temperature Static Discharge Voltage (As per JEDEC STD 22- A114-B)
Max
-0.5 to +4.6 -0.5 to +5.5 -0.5 to VCC+0.5 150 260 -65 to +165 2
Unit
V V V C C C KV
Note: 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.
DC Electrical Characteristics over Operating Range
Following Conditions Apply Unless Otherwise Specified Industrial: TA = -40C to +85C, VCC = 2.5V 0.2V
Symbol
VIH VIL IIH IIL IOZH IOZL VIK IODH IODL IOS VOH
Parameter
Input HIGH Level Input LOW Level Input HIGH Current Input LOW Current High Impedance Output Current (3-State Outputs Pins) Clamp Diode Voltage Output HIGH Current Output LOW Current Short Circuit Current Output HIGH Voltage VCC= Max. VCC= Max. VCC= Max.
Test Conditions1
Min
1.7 -0.5
Typ2
-0.7 -35 55 -50 0.2 -
Max
5.5 0.7 1 1 1 1 -1.2 -90 100 -120 0.4 0.2
Unit
V V
VI = 5.5V VI = GND VO = VCC VO = GND
3,4 3,4
A
VCC= Min., IIN = -18mA VCC= 2.5V, VIN = VIH or VIL, VO = 1.25V VCC= 2.5V, VIN = VIH or VIL, VO = 1.25V VCC= Max., VO = GND VCC= Min. VIN = VIH or VIL VCC= Min. VIN = VIH or VIL
3,4
V mA mA mA V
-15 25 -30
IOH= -8mA IOH= -100A IOL= 8mA IOL= 100A
1.7
5
VCC - 0.2 -
VOL
Output LOW Voltage
V
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, 25C 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 current.
2.5V CMOS Dual 1-To-5 Clock Driver
Notice: The information in this document is subject to change without notice.
3 of 11
June 2005 rev 0.2
Power Supply Characteristics Symbol
ICCL ICCH ICCZ ICC ICCD
ASM2P20805A
Parameter
Quiescent Power Supply Current Power Supply Current per Input HIGH Dynamic Power Supply 3 Current per Output
Test Conditions1
VCC = Max. VIN = GND or VCC VCC = Max. VIN = VCC -0.6V VCC= Max. CL= 15pF All Outputs Toggling VCC= Max. CL= 15pF All Outputs Toggling fi = 133MHz VCC= Max. CL= 15pF All Outputs Toggling fi = 166MHz VIN = VCC VIN = GND VIN = VCC VIN = GND VIN = VCC -0.6V VIN = GND VIN = VCC VIN = GND VIN = VCC -0.6V VIN= GND
Min
-
Typ2
0.1 35 65
Max
20 250 100
Unit
A A A/MHz
-
100 100 115 115
125 125 mA 150 150
IC
Total Power Supply 4 Current
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, +25C 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 (fONO) 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) fO = Output Frequency NO = Number of Outputs at fO
2.5V CMOS Dual 1-To-5 Clock Driver
Notice: The information in this document is subject to change without notice.
4 of 11
June 2005 rev 0.2
Switching Characteristics Over Operating Range3,4 Symbol
tPLH tPHL tR tF tSK(O) tSK(P) tSK(PP) tPZL tPZH tPLZ tPHZ fMAX tPLH tPHL tR tF tSK(O) tSK(P) tSK(PP) tPZL tPZH tPLZ tPHZ fMAX
ASM2P20805A
Parameter
Propagation Delay INA to OAn, INB to OBn Output Rise Time (Measured from 0.8V to 2V) Output Fall Time (Measured from 2V to 0.8V) Same device output pin to pin skew Pulse skew
6,9 5
Conditions1
Min2
1 -
Max
3 1.5 1.5 270 270 550 5.2 5.2 133 2.5 1.25 1.25 200 270 550 5.2 5.2 166
Unit
nS nS nS pS pS pS nS nS MHz nS nS nS pS pS pS nS nS MHz
CL= 15pF f 133MHz
7
0.5 -
Part to part skew
Output Enable Time OEA to OAn, OEB to OBn Output Disable Time OEA to OAn, OEB to OBn Input Frequency Propagation Delay INA to OAn, INB to OBn Output Rise Time (Measured from 0.7V to 1.7V) Output Fall Time (Measured from 1.7V to 0.7V) Same device output pin to pin skew Pulse skew
6,9 5
CL= 15pF 133MHz f 166MHz -
Part to part skew
7
Output Enable Time OEA to OAn, OEB to OBn Output Disable Time OEA to OAn, OEB to OBn Input Frequency
Notes: 1. See test circuits and waveforms. 2. Minimum limits are guaranteed but not tested on Propagation Delays. 3. tPLH and tPHL are production tested. All other parameters guaranteed but not production tested. 4. Propagation delay range indicated by Min. and Max. limit is due to VCC, operating temperature and process parameters. These propagation delay limits do not imply skew. 5. Skew measured between all outputs under identical transitions and load conditions. 6. Skew measured is difference between propagation delay times tPHL and tPLH of same outputs under identical load conditions. 7. Part to part skew for all outputs given identical transitions and load conditions at identical VCC levels and temperature. 8. Airflow of 1m/s is recommended for frequencies above 133MHz. 9. This parameter is measured using f = 1MHz.
2.5V CMOS Dual 1-To-5 Clock Driver
Notice: The information in this document is subject to change without notice.
5 of 11
June 2005 rev 0.2
Test Circuits and Waveforms
ASM2P20805A
Switch Position Test
Disable Low Enable Low Disable High Enable High
Test Conditions Switch
4.6V
Symbol
CL RT RL t R / tF
Definitions:
VCC = 2.5V 0.2V
15 ZOUT of pulse generator 33 1 (0V to 2.5V or 2.5V to 0V)
Unit
pF nS
GND
CL = Load capacitance: includes jig and probe capacitance. RT = Termination resistance: should be equal to ZOUT of the Pulse Generator. tR / tF = Rise/Fall time of the input stimulus from the Pulse Generator.
2.5V CMOS Dual 1-To-5 Clock Driver
Notice: The information in this document is subject to change without notice.
6 of 11
June 2005 rev 0.2
Test Circuits and Waveforms
ASM2P20805A
2.5V CMOS Dual 1-To-5 Clock Driver
Notice: The information in this document is subject to change without notice.
7 of 11
June 2005 rev 0.2
Package Information 20-lead SSOP ( 150 mil ) Package
ASM2P20805A
Dimensions Symbol
A A1 A2 D c E E1 L L1 b R1 a e
Inches Min Max
0.053 0.004 .... 0.337 0.007 0.228 0.150 0.016 0.203 0.003 0 0.069 0.010 0.059 0.344 0.012 0.244 0.157 0.035 0.325 .... 8
Millimeters Min Max
1.346 0.102 .... 8.560 0.178 5.791 3.810 0.406 0.008 0.08 0 1.753 0.254 1.499 8.738 0.274 6.198 3.988 0.890 0.014 ..... 8
0.010 BASIC
0.254 BASIC
0.025 BASIC
0.635 BASIC
2.5V CMOS Dual 1-To-5 Clock Driver
Notice: The information in this document is subject to change without notice.
8 of 11
June 2005 rev 0.2
20-lead QSOP Package
ASM2P20805A
Symbol
A A1 b c D E e H h L S a
Dimensions Inches Millimeters Min Max Min Max
0.060 0.004 0.009 0.007 0.337 0.150 0.230 0.010 0.016 0.056 0 0.068 0.008 0.012 0.010 0.344 0.157 0.244 0.016 0.035 0.060 8 1.52 0.10 0.23 0.18 8.56 3.81 5.84 0.25 0.41 1.42 0 1.73 0.20 0.30 0.25 8.74 3.99 6.20 0.41 0.89 1.52 8
0.025 BSC
0.64 BSC
2.5V CMOS Dual 1-To-5 Clock Driver
Notice: The information in this document is subject to change without notice.
9 of 11
June 2005 rev 0.2
Ordering Information Part Number
ASM2P20805A-20-AR ASM2P20805A-20-AT ASM2P20805A-20-DR ASM2P20805A-20-DT ASM2I20805AG-20-AR ASM2I20805AG-20-AT ASM2I20805AG-20-DR ASM2I20805AG-20-DT
ASM2P20805A
Marking
2P20805A 2P20805A 2P20805A 2P20805A 2I20805AG 2I20805AG 2I20805AG 2I20805AG
Package Type
20-Pin SSOP, TAPE & REEL 20-Pin SSOP, TUBE 20-Pin QSOP, TAPE & REEL 20-Pin QSOP, TUBE 20-Pin SSOP, TAPE & REEL, Green 20-Pin SSOP, TUBE, Green 20-Pin QSOP, TAPE & REEL, Green 20-Pin QSOP, TUBE, Green
Temperature
Commercial Commercial Commercial Commercial Industrial Industrial Industrial Industrial
Device Ordering Information
ASM2P20805AG-20-AR
R = Tape & reel, T = Tube or Tray O = SOT S = SOIC T = TSSOP A = SSOP V = TVSOP B = BGA Q = QFN DEVICE PIN COUNT F = LEAD FREE AND RoHS COMPLIANT PART G = GREEN PACKAGE PART NUMBER X= Automotive I= Industrial P or n/c = Commercial (-40C to +125C) (-40C to +85C) (0C to +70C) 1 = Reserved 2 = Non PLL based 3 = EMI Reduction 4 = DDR support products 5 = STD Zero Delay Buffer 6 = Power Management 7 = Power Management 8 = Power Management 9 = Hi Performance 0 = Reserved U = MSOP E = TQFP L = LQFP U = MSOP P = PDIP D = QSOP X = SC-70
ALLIANCE SEMICONDUCTOR MIXED SIGNAL PRODUCT
Licensed under US patent #5,488,627, #6,646,463 and #5,631,920.
2.5V CMOS Dual 1-To-5 Clock Driver
Notice: The information in this document is subject to change without notice.
10 of 11
June 2005 rev 0.2
ASM2P20805A
Alliance Semiconductor Corporation 2575, Augustine Drive, Santa Clara, CA 95054 Tel# 408-855-4900 Fax: 408-855-4999 www.alsc.com
Copyright (c) Alliance Semiconductor All Rights Reserved Part Number: ASM2P20805A Document Version: 0.2
Note: This product utilizes US Patent # 6,646,463 Impedance Emulator Patent issued to Alliance Semiconductor, dated 11-11-2003
(c) Copyright 2003 Alliance Semiconductor Corporation. All rights reserved. Our three-point logo, our name and Intelliwatt are trademarks or registered trademarks of Alliance. All other brand and product names may be the trademarks of their respective companies. Alliance reserves the right to make changes to this document and its products at any time without notice. Alliance assumes no responsibility for any errors that may appear in this document. The data contained herein represents Alliance's best data and/or estimates at the time of issuance. Alliance reserves the right to change or correct this data at any time, without notice. If the product described herein is under development, significant changes to these specifications are possible. The information in this product data sheet is intended to be general descriptive information for potential customers and users, and is not intended to operate as, or provide, any guarantee or warrantee to any user or customer. Alliance does not assume any responsibility or liability arising out of the application or use of any product described herein, and disclaims any express or implied warranties related to the sale and/or use of Alliance products including liability or warranties related to fitness for a particular purpose, merchantability, or infringement of any intellectual property rights, except as express agreed to in Alliance's Terms and Conditions of Sale which are available from Alliance. All sales of Alliance products are made exclusively according to Alliance's Terms and Conditions of Sale. The purchase of products from Alliance does not convey a license under any patent rights, copyrights; mask works rights, trademarks, or any other intellectual property rights of Alliance or third parties. Alliance does not authorize its products for use as critical components in life-supporting systems where a malfunction or failure may reasonably be expected to result in significant injury to the user, and the inclusion of Alliance products in such life-supporting systems implies that the manufacturer assumes all risk of such use and agrees to indemnify Alliance against all claims arising from such use.
2.5V CMOS Dual 1-To-5 Clock Driver
Notice: The information in this document is subject to change without notice.
11 of 11

▲Up To Search▲

Price & Availability of ASM2P20805A-20-DT

	To Download ASM2P20805A-20-DT Datasheet File
If you can't view the Datasheet, Please click here to try to view without PDF Reader .