Datasheet
DS4550
I
2
C and JTAG Nonvolatile 9-Bit I/O
Expander Plus Memory
2 _____________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
RECOMMENDED OPERATING CONDITIONS
(T
A
= -40°C to +85°C)
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 conditions 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.
Voltage on V
CC
, SDA, and SCL Pins
Relative to Ground.............................................-0.5V to +6.0V
Voltage on A0, A1, A2, TCK, TMS, TDI, and I/O_n [n = 0 to 8]
Relative to Ground...................................-0.5V to V
CC
+ 0.5V,
not to exceed +6.0V.
Operating Temperature Range ...........................-40°C to +85°C
EEPROM Programming Temperature Range .........0°C to +70°C
Storage Temperature Range .............................-55°C to +125°C
Soldering Temperature .....................See IPC/JEDEC J-STD-020
Specification
PARAMETER
SYMBOL
CONDITIONS
MIN TYP MAX
UNITS
Supply Voltage V
CC
(Note 1)
+2.7 +5.5
V
Input Logic 1 V
IH
0.7 x
V
CC
V
CC
+
0.3
V
Input Logic 0 V
IL
-0.3
0.3 x
V
CC
V
DC ELECTRICAL CHARACTERISTICS
(V
CC
= +2.7V to +5.5V, T
A
= -40°C to +85°C, unless otherwise noted.)
PARAMETER
SYMBOL
CONDITIONS
MIN TYP MAX UNITS
Standby Current I
STBY
(Note 2) 2 10 µA
Input Leakage I
L
-1.0 +1.0
µA
Input Current each I/O pin I
I/O
0.4 < V
I/O
< 0.9 x V
CC
-1.0 +1.0
µA
3mA sink current 0.4
Low-Level Output Voltage (SDA)
V
OL SDA
6mA sink current 0.6
V
I/O Pins Low-Level Output
Voltage
V
OL I/O
16mA sink current 0.4 V
Low-Level Output Voltage (TDO)
V
OL TDO
4mA sink current 0.4 V
High-Level Output Voltage (TDO)
V
OH TDO
1mA source current 2.4 V
I/O Pin Pullup Resistors R
PU
4.0 5.5 7.5 kΩ
TMS, TDI Pullup Resistors R
JPU
7.5 10
12.5
kΩ
I/O Capacitance C
I/O
(Note 3) 10 pF
Power-On Reset Voltage V
POR
1.6 V