ASIC SA-27E Databook, Part 1: Base Library and I/Os - CSAIL People

SA-27E
IP25D2T, IP25D2T_PM
2.5V CMOS (3.3V Tolerant) Test DI2 Receiver
Cell: IP25D2T, IP25D2T_PM
Function: 2.5V CMOS (3.3V Tolerant) Test DI2 Receiver
Description:
Stand-alone noninverting receiver that interfaces
2.5V off-chip unidirectional data buses with ZDI
1.8V internal logic and is tolerant of 3.3V LVTTL
levels. Serves as first block of DI2 daisy chain.
Receiver input has hysteresis.
PAD External DI2/driver inhibit input (1st
block)
ZDI Driver inhibit output (DI out)
Receiver Truth Table
Input Output
PAD ZDI
Standard Cell
1024
0 0
1 1
Receiver Propagation Delays
Path
(Input to
Output)
Performance
Level
PAD-ZDI A
Parameter
Capacitance (in units of N std ) and Cell Sizes
Delay (ns) = intercept + slope (N std)
V dd = 1.65V
V dd250 = 2.3V
T j = 125˚C
Process = Slow
V dd = 1.8V
V dd250 = 2.5V
T j = 25˚ C
Process = Nom.
V dd = 1.95V
V dd250 = 2.7V
T j = 0˚C
Process = Fast
t PLH 0.611 + 0.002N std 0.420 + 0.001N std 0.331 + 0.001N std
t PHL 0.539 + 0.002N std 0.439 + 0.001N std 0.360 + 0.001N std
Input Pins
Performance Level
A
PAD (Receiver Input) 130.708
Internal 61.741
Cell Units 2 cells
PAD
SA14-2208-03
June 4, 2001