DS1961S-F3 Maxim Integrated Products, DS1961S-F3 Datasheet - Page 36

• Manufacturer Part Number: DS1961S-F3
• Description: IBUTTON EEPROM 1KBit SHA-1 2CAN
• Manufacturer: Maxim Integrated Products
• Series: iButton®r

Specifications of DS1961S-F3

• Rohs Information: IButton RoHS Compliance Plan
• Memory Size: 128B
• Memory Type: EEPROM
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

NOTES:
SHA-1 ENGINE
Computation Current
Computation Time
t
t
t
t
t
t
10) The I-V characteristic is linear for voltages less than 1V.
11) e is the time required for the pullup circuitry to pull the voltage on I/O up from V
12) d represents the time required for the pullup circuitry to pull the voltage on I/O up from V
13) Highlighted numbers are not in compliance with the published iButton standards. See comparison
14) Guaranteed by design, not production tested
PARAMETER
SLOT
RSTL
PDH
PDL
W0L
SLS
1) System requirement.
2) Maximum allowable pullup resistance is a function of the number of 1-Wire devices in the system
3) Capacitance on the data pin could be 800pF when power is first applied. If a 5kW resistor is used
4) Input load is to ground.
5) All voltages are referenced to ground.
6) V
7) Voltage below which, during a falling edge on I/O, a logic 0 is detected.
8) The voltage on I/O needs to be less or equal to V
9) Voltage above which, during a rising edge on I/O, a logic 1 is detected.
PARAMETER
, t
NAME
(incl. t
SPD
and 1-Wire recovery times. The specified value here applies to systems with only one device and
with the minimum 1-Wire recovery times. For more heavily loaded systems, an active pullup such
as that found in the DS2480B may be required.
to pull up the data line to V
5µs after power has been applied.
input high threshold of the bus master.
table below.
TL
, V
REC
TH
are a function of the internal supply voltage.
)
61µs
480µs
15µs
60µs
60µs
15µs
MIN
STANDARD
SYMBOL
STANDARD VALUES
SPEED
I
t
LCSHA
CSHA
(undef.)
(undef.)
60µs
240µs
120µs
60µs
MAX
PUP;
the parasite capacitance does not affect normal communications
CONDITIONS
7µs
48µs
2µs
8µs
6µs
2µs
MIN
OVERDRIVE
SPEED
36 of 36
(undef.)
80µs
6µs
24µs
16µs
6µs
MAX
ILMAX
whenever the master drives the line low.
MIN
65µs
720µs
15µs
60µs
60µs
15µs
MIN
STANDARD
SPEED
TYP
DS1961S VALUES
(undef.)
960µs
60µs
285µs
120µs
60µs
MAX
MAX UNITS NOTES
4.5
1.5
9µs
68µs
1µs
7.3µs
7µs
1.85µs
MIN
OVERDRIVE
IL
mA
ms
to V
SPEED
TH
(undef.)
80µs
6.7µs
24µs
14µs
7µs
IL
.
MAX
to the
14