Datasheet

DAC081C081, DAC081C085
SNAS449D –FEBRUARY 2008–REVISED MARCH 2013 www.ti.com
A.C. and Timing Characteristics (continued)
Values shown in this table are design targets and are subject to change before product release.
The following specifications apply for V
A
= +2.7V to +5.5V, V
REF
= V
A
, R
L
= Infinity, C
L
= 200 pF to GND. Boldface limits
apply for T
MIN
≤ T
A
≤ T
MAX
and all other limits are at T
A
= 25°C, unless otherwise specified.
Units
Symbol Parameter Conditions
(1)
Typical
(2)
Limits
(1)(2)
(Limits)
0 µs (min)
Standard Mode
3.45 µs (max)
0 µs (min)
Fast Mode
0.9 µs (max)
t
HD;DAT
Data Hold Time
0 ns (min)
High Speed Mode, C
b
= 100pF
70 ns (max)
0 ns (min)
High Speed Mode, C
b
= 400pF
150 ns (max)
Standard Mode 4.7 µs (min)
Setup time for a start or a repeated
t
SU;STA
Fast Mode 0.6 µs (min)
start condition
High Speed Mode 160 ns (min)
Standard Mode 4.0 µs (min)
Hold time for a start or a repeated start
t
HD;STA
Fast Mode 0.6 µs (min)
condition
High Speed Mode 160 ns (min)
Bus free time between a stop and start Standard Mode 4.7 µs (min)
t
BUF
condition Fast Mode 1.3 µs (min)
Standard Mode 4.0 µs (min)
t
SU;STO
Setup time for a stop condition Fast Mode 0.6 µs (min)
High Speed Mode 160 ns (min)
Standard Mode 1000 ns (max)
20+0.1C
b
ns (min)
Fast Mode
300 ns (max)
t
rDA
Rise time of SDA signal
10 ns (min)
High Speed Mode, C
b
= 100pF
80 ns (max)
20 ns (min)
High Speed Mode, C
b
= 400pF
160 ns (max)
Standard Mode 250 ns (max)
20+0.1C
b
ns (min)
Fast Mode
250 ns (max)
t
fDA
Fall time of SDA signal
10 ns (min)
High Speed Mode, C
b
= 100pF
80 ns (max)
20 ns (min)
High Speed Mode, C
b
= 400pF
160 ns (max)
Standard Mode 1000 ns (max)
20+0.1C
b
ns (min)
Fast Mode
300 ns (max)
t
rCL
Rise time of SCL signal
10 ns (min)
High Speed Mode, C
b
= 100pF
40 ns (max)
20 ns (min)
High Speed Mode, C
b
= 400pF
80 ns (max)
Standard Mode 1000 ns (max)
20+0.1C
b
ns (min)
Fast Mode
300 ns (max)
Rise time of SCL signal after a
t
rCL1
repeated start condition and after an
10 ns (min)
High Speed Mode, C
b
= 100pF
acknowledge bit.
80 ns (max)
20 ns (min)
High Speed Mode, C
b
= 400pF
160 ns (max)
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