Datasheet

MCP6546/6R/6U/7/8/9
DS21714G-page 4 © 2002-2012 Microchip Technology Inc.
FIGURE 1-1: Timing Diagram for the CS
pin on the MCP6548.
FIGURE 1-2: Propagation Delay Timing
Diagram.
MCP6548 CHIP SELECT (CS) CHARACTERISTICS
Electrical Specifications: Unless otherwise indicated, V
DD
= +1.6V to +5.5V, V
SS
= GND, T
A
= 25°C, V
IN
+ = V
DD
/2,
V
IN
– = V
SS
, R
PU
=2.74kΩ to V
PU
= V
DD
, and C
L
= 36 pF (Refer to Figures 1-1 and 1-3).
Parameters Sym Min Typ Max Units Conditions
CS
Low Specifications
CS
Logic Threshold, Low
V
IL
V
SS
—0.2
V
DD
V
CS
Input Current, Low
I
CSL
—5—pA
CS
= V
SS
CS High Specifications
CS
Logic Threshold, High
V
IH
0.8 V
DD
—V
DD
V
CS Input Current, High
I
CSH
—1—pA
CS
= V
DD
CS Input High, V
DD
Current
I
DD
—18—pA
CS
= V
DD
CS Input High, GND Current
I
SS
—-20—pA
CS
= V
DD
Comparator Output Leakage
I
O(LEAK)
—1—pA
V
OUT
= V
SS
+10V, CS = V
DD
CS Dynamic Specifications
CS
Low to Comparator Output
Low Turn-on Time
t
ON
—250ms
CS
= 0.2V
DD
to V
OUT
= V
DD
/2,
V
IN
– = V
DD
CS High to Comparator Output
High Z Turn-off Time
t
OFF
—10—µs
CS
= 0.8V
DD
to V
OUT
= V
DD
/2,
V
IN
– = V
DD
CS Hysteresis
V
CS_HYST
—0.6—V
V
DD
= 5V
V
IL
High-Z
t
ON
V
IH
CS
t
OFF
V
OUT
-20 pA (typ.)
High-Z
I
SS
I
CS
-20 pA (typ.)-0.6 µA (typ.)
1 pA (typ.) 1 pA (typ.)5 pA (typ.)
V
OL
t
PLH
V
OUT
V
IN
–
100 mV
100 mV
t
PHL
V
OL
V
IN
+ = V
DD
/2
V
OH