Datasheet

© 2002-2011 Microchip Technology Inc. DS21696H-page 5
MCP6541/1R/1U/2/3/4
FIGURE 1-1: Timing Diagram for the CS
Pin on the MCP6543.
FIGURE 1-2: Propagation Delay Timing
Diagram.
MCP6543 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
, 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
—0.2V
DD
V
CS
Input Current, Low I
CSL
—5.0—pACS = V
SS
CS High Specifications
CS
Logic Threshold, High V
IH
0.8 V
D
D
—V
DD
V
CS
Input Current, High I
CSH
—1—pACS = V
DD
CS Input High, V
DD
Current I
DD
—18—pACS = V
DD
CS Input High, GND Current I
SS
— –20 — pA CS = V
DD
Comparator Output Leakage I
O(LEAK)
—1—pAV
OUT
= V
DD
, CS = V
DD
CS Dynamic Specifications
CS
Low to Comparator Output
Low Turn-on Time
t
ON
—250msCS = 0.2 V
DD
to V
OUT
= V
DD
/2,
V
IN
– = V
DD
CS High to Comparator Output
High Z Turn-off Time
t
OFF
—10—µsCS = 0.8 V
DD
to V
OUT
= V
DD
/2,
V
IN
– = V
DD
CS Hysteresis V
CS_HYS
T
—0.6— VV
DD
= 5V
V
IL
Hi-Z
t
ON
V
IH
CS
t
OFF
V
OUT
-20 pA (typ.)
Hi-Z
I
SS
I
CS
1pA (typ.)
1pA (typ.)
-20 pA (typ.)
-0.6 µA (typ.)
V
OL
t
PLH
V
OUT
V
IN
–
100 mV
100 mV
t
PHL
V
OL
V
IN
+ = V
DD
/2
V
OH