MIC74BQS Micrel Inc, MIC74BQS Datasheet - Page 4

• Manufacturer Part Number: MIC74BQS
• Description: IC I/O EXPANDER I2C 8B 16QSOP
• Manufacturer: Micrel Inc
• Series: -r

Specifications of MIC74BQS

• Interface: I²C, SMBus
• Number Of I /o: 8
• Interrupt Output: Yes
• Frequency - Clock: -
• Voltage - Supply: 2.7 V ~ 3.6 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 16-SSOP (0.154", 3.90mm Width)
• Includes: -
• Lead Free Status / Rohs Status: Contains lead / RoHS non-compliant

Notes:
1. Exceeding the absolute maximum rating may damage the device.
2. The device is not guaranteed to function outside its operating rating.
3. Devices are ESD sensitive. Handling precautions recommended. Human body model, 1.5k in series with 100pF.
4. Devices participating in a transfer will timeout when any clock low exceeds the value of t
5. t
6. Rise and fall time is defined as follows: t
7. Guaranteed by design.
Timing Definitions
Micrel, Inc.
Symbol
AC Characteristics
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
October 2006
START
PULSE
/INT
/IR
HD:STA
SU:STA
SU:STO
HD:DAT
SU:DAT
TIMEOUT
LOW
HIGH
F
R
BUF
condition must reset the communication no later than t
slave as it incorporates the cumulative stretch limit for both a master (10ms) and a slave (25ms).
HIGH(max)
provides a simple guaranteed method for devices to detect bus idle conditions.
Parameter
Fan Startup Interval
Minimum Pulse-Width
Interrupt Delay
Delay from Status Read or ARA
Response to /ALERT ≥ V
Hold Time, Note 7
Setup Time, Note 7
Stop Condition Setup Time
Data Hold Time
Data Setup Time
Clock Low Time-Out
Clock Low Period
Clock High Period
Clock/Data Fall Time
Clock/Data Rise Time
Bus free time between stop and
Start condition
DATA
CLK
t
BUF
StoP
Start
t
R
R
OH
= V
t
t
HD:DAT
HD:STA
IL(max)
t
LOW
– 0.15V to V
Condition
normal operation
minimum pulse-width on Pn to generate
an interrupt, Note 7
interrupt delay from state change on Pn to
/ALERT ≤ V
hold time after repeated start condition,
after this period, the first clock is
generated
repeated start condition setup time
Note 7
Note 7
Note 7
Note 4, 7
Note 5, 7
Note 5, 7
Note 6, 7
Note 6, 7
Note 7
TIMEOUT(max)
t
t
SU:DAT
F
IH(min)
of 35ms. The maximum value specified must be adhered to by both a master and a
OL
, Note 7
t
+ 0.15V; t
HIGH
4
F
= 0.9V
Start
DD
TIMEOUT(min)
to V
t
SU:STA
IL(max)
t
HD:STA
of 25ms. Devices that have detected a timeout
– 0.15V.
Min
500
0.5
4.7
4.7
4.7
10
25
4
4
0
4
t
SU:STO
1000
Typ
300
35
50
1
StoP
Max
3.3
M9999-101006
4
4
MIC74
Units
sec
ms
µs
ns
µs
µs
µs
µs
ns
ns
µs
µs
ns
ns
µs