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

Cell: IP25LTT, IP25LTT_PM
Function: 2.5V CMOS (3.3V Tolerant) Leakage Test Receiver
Description:
Stand-alone inverting receiver that interfaces
2.5V off-chip unidirectional data buses with 1.8V ZLT
internal logic and is tolerant of 3.3V LVTTL levels.
Receiver input has hysteresis.
PAD External LT inhibit input
ZLT Driver inhibit output (LT out)
Receiver Truth Table
Input Output
PAD ZLT
SA14-2208-03
June 4, 2001
0 1
1 0
Receiver Propagation Delays
Path
(Input to
Output)
Performance
Level
PAD-ZLT A
Parameter
Capacitance (in units of N std ) and Cell Sizes
SA-27E
IP25LTT, IP25LTT_PM
2.5V CMOS (3.3V Tolerant) Leakage Test Receiver
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 0.751 + 0.002N std 0.586 + 0.001N std 0.473 + 0.001N std
t PHL 0.615 + 0.002N std 0.417 + 0.001N std 0.325 + 0.001N std
Input Pins
Performance Level
A
PAD (Receiver Input) 130.821
Internal 64.510
Cell Units 1 cell
PAD
Standard Cell
1025