Datasheet

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TIMING CHARACTERISTICS
DAC6574
SLAS408 – DECEMBER 2003
V
DD
= 2.7 V to 5.5 V, R
L
= 2 k Ω to GND; all specifications -40 ° C to +105 ° C, unless otherwise specified.
SYMBOL PARAMETER TEST CONDITIONS MIN TYP MAX UNITS
Standard mode 100 kHz
Fast mode 400 kHz
f
SCL
SCL clock frequency
High-Speed Mode, C
B
= 100 pF max 3.4 MHz
High-speed mode, C
B
= 400 pF max 1.7 MHz
Standard mode 4.7 µs
Bus free time between a
t
BUF
STOP and START condition
Fast mode 1.3 µs
Standard mode 4.0 µs
Hold time (repeated) START
t
HD
; t
STA
Fast mode 600 ns
condition
High-speed mode 160 ns
Standard mode 4.7 µs
Fast mode 1.3 µs
t
LOW
LOW period of the SCL clock
High-speed mode, C
B
= 100 pF max 160 ns
High-speed mode, C
B
= 400 pF max 320 ns
Standard mode 4.0 µs
Fast mode 600 ns
t
HIGH
HIGH period of the SCL clock
High-Speed Mode, C
B
= 100 pF max 60 ns
High-speed mode, C
B
= 400 pF max 120 ns
Standard mode 4.7 µs
Setup time for a repeated
t
SU
; t
STA
Fast mode 600 ns
START condition
High-speed mode 160 ns
Standard mode 250 ns
t
SU
; t
DAT
Data setup time Fast mode 100 ns
High-speed mode 10 ns
Standard mode 0 3.45 µs
Fast mode 0 0.9 µs
t
HD
; t
DAT
Data hold time
High-speed mode, C
B
= 100 pF max 0 70 ns
High-speed mode, C
B
= 400 pF max 0 150 ns
Standard mode 1000 ns
Fast mode 20 + 0.1C
B
300 ns
t
RCL
Rise time of SCL signal
High-speed mode, C
B
= 100 pF max 10 40 ns
High-speed mode, C
B
= 400 pF max 20 80 ns
Standard mode 1000 ns
Rise time of SCL signal after
Fast mode 20 + 0.1C
B
300 ns
a repeated START condition
t
RCL1
and after an acknowledge
High-speed mode, C
B
= 100 pF max 10 80 ns
BIT
High-speed mode, C
B
= 400 pF max 20 160 ns
Standard mode 300 ns
Fast mode 20 + 0.1C
B
300 ns
t
FCL
Fall time of SCL signal
High-speed mode, C
B
= 100 pF max 10 40 ns
High-speed mode, C
B
= 400 pF max 20 80 ns
Standard mode 1000 ns
Fast mode 20 + 0.1C
B
300 ns
t
RDA
Rise time of SDA signal
High-speed mode, C
B
= 100 pF max 10 80 ns
High-speed mode, C
B
= 400 pF max 20 160 ns
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