12-BIT PARITY GENERATOR/CHECKER

Transcription

1 2-BIT PAIT GEATO/CHECKE FEATUES DESCIPTION Provides odd-high parity of 2 inputs Extended 00E VEE range of 4.2V to 5.5V Output register with Shift/Hold capability 900ps max. D to, / output Enable control Asynchronous egister eset Differential outputs Fully compatible with industry standard 0KH, 00K ECL levels Internal 75KΩ input pulldown resistors Fully compatible with Motorola MC0E/00E60 Available in 28-pin PLCC package BLOCK DIAGAM D0 D D2 D3 The S0/00E60 are high-speed, 2-bit parity generator/checkers with differential outputs, for use in new, high-performance ECL systems. The output takes on a logic HIGH value only when an odd number of inputs are at a logic HIGH. A logic HIGH on the enable input () forces the output to a logic LOW. An additional feature of the E60 is the output register. Two multiplexers and their associated signals control the register input by providing the option of holding present data, loading the new parity data or shifting external data in. To hold the present data, the Hold signal () must be at a logic LOW level. If the signal is at a logic HIGH, the data present at the output is passed through the first multiplexer. Taking the Shift signal () to a logic HIGH will shift the data at the pin into the output register. If the signal is at a logic LOW, the output of the first multiplexer is then passed through to the register. The register itself is clocked on the rising edge of CLK or CLK2 (or both). The presence of a logic HIGH on the reset pin () forces the register output to a logic LOW. D4 D5 D6 D7 D8 D9 D0 D 0 MUX SEL 0 MUX SEL D CLK CLK2 ev.: F Amendment: /0 Issue Date: March 2006

2 PACKAGE/ODEING INFOMATION D5 D6 D7 VEE D D4 D3 D2 D D PLCC TOP VIEW J VCC Ordering Information () Package Operating Package Lead Part Number Type ange Marking Finish JC J28- Commercial JC Sn-Pb JCT (2) J28- Commercial JC Sn-Pb JC J28- Commercial JC Sn-Pb JCT (2) J28- Commercial JC Sn-Pb D9 D D CLK CLK2 3 2 NC JZ (3) J28- Commercial JZ with Matte-Sn JZT (2, 3) J28- Commercial JZ with Matte-Sn JZ (3) J28- Commercial JZ with Matte-Sn 28-Pin PLCC (J28-) JZT (2, 3) J28- Commercial JZ with Matte-Sn Notes:. Contact factory for die availability. Dice are guaranteed at T A = 25 C, DC Electricals only. 2. Tape and eel. 3. Pb-Free package is recommended for new designs. 2

3 PIN NAMES TUTH TABLE Pin Function D0 D Data Inputs Serial Data Input Enable, active LOW Hold, active LOW Shift, active HIGH CLK, CLK2 Clock Inputs eset Input, Direct Output, egister Output VCC to Output Number of HIGH Inputs Even Odd Output LOW HIGH DC ELECTICAL CHAACTEISTICS VEE = VEE (Min.) to VEE (Max.); VCC = = GND TA = 0 C TA = +25 C TA = +85 C Symbol Parameter Min. Typ. Max. Min. Typ. Max. Min. Typ. Max. Unit Condition IIH Input HIGH Current µa CLK, CLK All Other Inputs IEE Power Supply Current ma 0E E

4 AC ELECTICAL CHAACTEISTICS VEE = VEE (Min.) to VEE (Max.); VCC = = GND TA = 0 C TA = +25 C TA = +85 C Symbol Parameter Min. Typ. Max. Min. Typ. Max. Min. Typ. Max. Unit Condition tpd Propagation Delay to Output ps D to to CLK to to ts Set-up Time ps D th Hold Time ps D tr ise/fall Time ps tf 20% to 80% 4

5 28-PIN PLCC (J28-) ev. 03 MICEL, INC. 280 FOTUNE DIVE SAN JOSE, CA 953 USA TEL + (408) FAX + (408) WEB The information furnished by Micrel in this data sheet is believed to be accurate and reliable. However, no responsibility is assumed by Micrel for its use. Micrel reserves the right to change circuitry and specifications at any time without notification to the customer. Micrel Products are not designed or authorized for use as components in life support appliances, devices or systems where malfunction of a product can reasonably be expected to result in personal injury. Life support devices or systems are devices or systems that (a) are intended for surgical implant into the body or (b) support or sustain life, and whose failure to perform can be reasonably expected to result in a significant injury to the user. A Purchaser s use or sale of Micrel Products for use in life support appliances, devices or systems is at Purchaser s own risk and Purchaser agrees to fully indemnify Micrel for any damages resulting from such use or sale Micrel, Incorporated. 5