We are planning to use the PECL based Driver IC and Receiver IC in our ATE application.
We need clarification from regarding the usage of these IC's which we are planning to interface it with the IC part MC10ELT28DG available in our customer module.
Problem we are observing is the difference in the input and output voltage level of these IC's (Voh, Vih, Vol and Vil). Can we interface these IC's with standard PECL level IC's? Any additional care to be taken for interfacing.
The below difference (in table) I am seeing with Voltage specifications of Standard, MC10ELT28 part and TI parts. Request to provide a solution
Sl.No | Standard PECL Input and Output Levels (VDD : 5V) | Specification on our Customer IC MC10ELT28 (VDD : 5V) | Specification of TB5D1M PECL Driver (VDD:5V) | Specification of TB5R1D PECL receiver (VDD : 5V) | Units | ||||||
Parameter | Symbol | Min | Max | Min | Max | Min | Max | Min | Max | ||
1 | Driver High | Voh | 3.98 | 4.12 | 4.02 | 4.19 | VDD – 1.8V = 3.2 | VDD – 0.8V = 4.2 | - | V | |
2 | Driver Low | Vol | 3.19 | 3.38 | 3.05 | 3.37 | VOH – 1.4V = 1.8 | VOH – 0.7V = 3.5 | - | V | |
3 | Receiver High | Vih | 3.84 | 4.12 | 3.87 | 4.19 | - | 2 | - | V | |
4 | Receiver Low | Vil | 3.19 | 3.52 | 3.05 | 3.52 | - | - | 0.8 | V |