time without notice. ISSI assumes no liability arising out of the application or use of any information, products or services described herein. Customers are
advised to obtain the latest version of this device specification before relying on any published information and before placing orders for products.
Integrated Silicon Solution, Inc. does not recommend the use of any of its products in life support applications where the failure or malfunction of the
product can reasonably be expected to cause failure of the life support system or to significantly affect its safety or effectiveness. Products are not
authorized for use in such applications unless Integrated Silicon Solution, Inc. receives written assurance to its satisfaction, that:
a.) the risk of injury or damage has been minimized;
b.) the user assume all such risks; and
c.) potential liability of Integrated Silicon Solution, Inc is adequately protected under the circumstances
Integrated Silicon Solution, Inc. – www.issi.com
Rev.A, 12/19/2011
2
IS31IO7326
ORDERING INFORMATION
Industrial Range: -40°C to +125°C
Order Part No.
IS31IO7326-QFLS4-TR
Package
QFN-24, Lead-free
QTY/Reel
2500
Integrated Silicon Solution, Inc. – www.issi.com
Rev.A, 12/19/2011
3
IS31IO7326
ABSOLUTE MAXIMUM RATINGS
Supply voltage, V
CC
Voltage at any input pin (Except PP0-PP7)
SCL, SDA, AD, RST, INT, OD0-OD3
PP0–PP3
PP source output current
PP/OD sink current
SDA sink current
_______
________
_______
INT sink current
Continuous power dissipation (T
A
= 70°C) 24-Pin QFN (Derate
33.2mW/°C over 70°C)
Maximum junction temperature, T
JMAX
Storage temperature range, T
STG
Operating temperature range, T
A
Solder information, vapor phase (60s)
infrared (15s)
ESD HBM
-0.3V ~ +6.0V
-0.3V ~ V
CC
+0.3V
-0.3V ~ +6.0V
-0.3V ~ V
CC
+0.3V
±100mA
120mA
10mA
10mA
2.65W
150°C
-65°C ~ +150°C
−40°C
~ +125°C
215°C
220°C
4kV
Note:
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only and
functional operation of the device at these or any other condition beyond those indicated in the operational sections of the specifications is not
implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.
ELECTRICAL CHARACTERISTICS
T
A
= -40°C ~ +125°C, V
CC
= 2.4V ~ 5.5V, unless otherwise noted. Typical values are at T
A
= 25°C, V
CC
= 3.3V.
(Note
1)
Symbol
V
CC
V
POR
I
STB
I+
V
IH
V
IL
I
IH
, I
IL
C
IN
Parameter
Supply voltage
Power-on-reset voltage
Standby current
(Interface idle)
Supply current
(Interface running)
Logic “1” input voltage
Logic “0” input voltage
Input leakage current
Input capacitance
SDA, SCL, AD0, AD1, RST,
OD0~OD7, PP0~PP7
Logic “0” output voltage
PP0~PP7
Output low-voltage INT
_______
________
Condition
Min.
2.4
Typ.
Max.
5.5
2.35
Units
V
V
μA
μA
V
V
CC
falling
SCL,SDA and other digital inputs
at V
CC
f
SCL
= 400kHz
other digital inputs at V
CC
1.4
0.3
6.5
1.9
25
0.4
SDA, SCL, AD0, AD1, RST ,
OD0~OD7 at V
CC
or GND
(Note 2)
V
CC
= 2.5V, I
SINK
= 10mA
V
CC
= 3.3V, I
SINK
= 15mA
V
CC
= 5.0V, I
SINK
= 20mA
I
SINK
= 5mA
Configuration Register bit SD = 0
Configuration Register bit SD = 1
16
9
________
V
μA
pF
-0.2
10
+0.2
200
240
250
180
mV
ms
mV
V
OL
V
OLINT
t
SCAN
_______
Time to scan key matrix
completely
Integrated Silicon Solution, Inc. – www.issi.com
Rev.A, 12/19/2011
4
IS31IO7326
TIMING CHARACTERISTICS
T
A
= -40°C ~ +125°C, V
CC
= 2.4V ~ 5.5V, unless otherwise noted. Typical values are at T
A
= 25°C, V
CC
= 3.3V.
(Note 3)
Symbol
f
SCL
t
BUF
t
HD, STA
t
SU, STA
t
SU, STO
t
HD, DAT
t
SU, DAT
t
LOW
t
HIGH
t
R
t
F
t
F, TX
t
SP
C
b
t
W
t
RST
________
Parameter
Serial-clock frequency
Bus free time between a STOP and a
START condition
Hold time (repeated) START condition
Repeated START condition setup time
STOP condition setup time
Data hold time
Data setup time
SCL clock low period
SCL clock high period
Rise time of both SDA and SCL signals,
receiving
Fall time of both SDA and SCL signals,
receiving
Fall time of SDA transmitting
Pulse width of spike suppressed
Capacitive load for each bus line
________
Condition
Min.
Typ.
Max.
400
Units
kHz
μs
μs
μs
μs
1.3
0.6
0.6
0.6
(Note 3)
100
1.3
0.7
(Note 4)
(Note 4)
(Note 4)
(Note 5)
500
1
20 + 0.1Cb
20 + 0.1Cb
20 + 0.1Cb
50
400
300
300
250
0.9
μs
ns
μs
μs
ns
ns
ns
ns
pF
ns
μs
RST pulse width
RST rising to START condition setup
time
________
PORT AND INTERRUPT TIMING CHARACTERISTICS
T = -40°C ~ +125°C, V
CC
= 2.4V ~ 5.5V, unless otherwise noted. Typical values are at T
A
= 25°C, V
CC
= 3.3V
(Note 3)
Symbol
t
PV
t
PSU
t
PH
t
IV
t
IR
Parameter
Port output data valid
Port input setup time
Port input hold time
_______
Condition
C
L
≤
100pF
C
L
≤
100pF
C
L
≤
100pF
C
L
≤
100pF
C
L
≤
100pF
Min.
Typ.
Max.
4
Untis
μs
μs
μs
0
4
4
4
INT input data valid time
μs
μs
_______
INT reset delay time from acknowledge
Note 1:
All parameters are tested at T
A
= 25°C. Specifications over temperature are guaranteed by design.
Note 2:
Guaranteed by design.
Note 3:
A master device must provide a hold time of at least 300ns for the SDA signal (referred to VIL of the SCL signal) in order to bridge the
undefined region of SCL’s falling edge.
Note 4:
Cb = total capacitance of one bus line in pF. ISINK
≤
6mA. tR and tF measured between 0.3 × V
CC
and 0.7× V
CC
.
Note 5:
Input filters on the SDA and SCL inputs suppress noise spikes less than 50ns.
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