Document
Edge647 Pin Electronics Driver, Window Comparator, and Switch Matrix
EDGE HIGH-PERFORMANCE PRODUCTS Description
The Edge647 is an integrated trinary driver, window comparator, and switch matrix pin electronics solution manufactured in a wide voltage CMOS process. It is designed for automatic test equipment and instrumentation where cost, functional density, and power are all at a premium. The tristatable driver is capable of generating 3 levels one for a logic high, one for a logic low, and one for either a termination voltage or a special programming voltage. The on-board window comparator effectively determines whether the DUT is in a high, low, or intermediate state. The switches are included to allow such functions as PMU, pull up, and pull down connections. The Edge647 is intended to offer an extremely low leakage, low cost, low power, small footprint, per pin solution for 100 MHz and below pin electronics applications. It is a higher performance, pin and functionally compatible version of the Edge646.
Applications
• Low Cost Automatic Test Equipment
Functional Block Diagram
VH VTT VL
DATA DATA* DOUT DVR EN DVR EN*
VTT EN VTT EN* SW0
SW0 EN*
Features
SW1 LOAD
• • • • • • • •
Pin Compatible with the Edge646 100 MHz Operation 12V I/O Range Programmable Output Levels Flex In digital Inputs (Technology Independent) Three Level Driver Extremely Low Leakage Currents (~0 nA) Small Footprint (32 Pin, 7 mm X 7 mm, TQFP Package)
SW1 EN*
SW2
SW2 EN* VBB COMPA HIGH LEVEL VINP LOW LEVEL COMPB CVA
CVB
Revision 2 / October 27, 2000
1
www.semtech.com
Edge647
EDGE HIGH-PERFORMANCE PRODUCTS PIN Description
Pin Name Driver DATA / DATA* DVR EN / DVR EN* VTT EN / VTT EN* DOUT VH, VL, VTT VBB Comparator VINP CVA, CVB COMPA, COMPB LOW LEVEL HIGH LEVEL Switch Matrix SW0 EN*, SW! EN* SW2 EN* SW0 SW1 SW2 LOAD Power Supplies VCC VEE N/C 3, 22, 27 4, 21, 28 9 Positive analog power supply. Negative analog power supply. No Connect pin (leave floating). 11, 13 15 12 14 16 17 TTL compatible inputs that activate switches 0, 1, 2, and 3. Switch 0 Switch 1 Switch 2 Input pin that connects the DUT to the analog switches. 19 20, 18 5, 8 7 6 Analog window comparator input. Analog DC comparator inputs that set the threshold levels for teh window comparator. Digital comparator outputs. Voltage inputs that establish the digital low and high levels of the comparator outputs. 30, 29 32, 31 2, 1 23 24, 25, 26 10 Digital input that determines the high/low status of the driver when it is enabled. Digital input that enables and disables the driver, or places the driver in the VTT state. Digital input that determines whether DVR EN* places the driver in a high impedance state or actively drives to the VTT level. Driver Output. Unbuffered analog inputs that set the voltage level of a logical 1, 0, or VTT at the driver output. Analog input pin which establishes the threshold for all singleended digital input signals. Pin # Description
2000 Semtech Corp.
2
www.semtech.co.