DS1990A-F3+ Maxim Integrated Products, DS1990A-F3+ Datasheet - Page 9

• Manufacturer Part Number: DS1990A-F3+
• Description: IC IBUTTON SERIAL NUMBER F3
• Manufacturer: Maxim Integrated Products
• Series: iButton®r
• Type: Serial Number IButtonr

Specifications of DS1990A-F3+

• Rohs Information: IButton RoHS Compliance Plan
• Memory Size: 8B
• Memory Type: ROM
• Maximum Operating Temperature: + 85 C
• Package / Case: F3 MicroCan
• Minimum Operating Temperature: - 40 C
• Mounting Style: SMD/SMT
• Ic Function: Serial Number IButton IC
• Supply Voltage Range: 2.8V To 6V
• Operating Temperature Range: -40°C To +85°C
• Digital Ic Case Style: F3 IButton
• Termination Type: SMD
• Supply Voltage Min: 2.8V
• Rohs Compliant: Yes
• Filter Terminals: SMD
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

A read-data time slot begins like a write-one time slot.
The voltage on the data line must remain below V
until the read low time t
window, when responding with a 0, the DS1990A starts
pulling the data line low; its internal timing generator
determines when this pulldown ends and the voltage
starts rising again. When responding with a 1, the
DS1990A does not hold the data line low at all, and the
voltage starts rising as soon as t
For the latest package outline information and land patterns, go to www.maxim-ic.com/packages.
PACKAGE TYPE
F3 iButton
F5 iButton
_______________________________________________________________________________________
RL
is expired. During the t
RL
is over.
Slave-to-Master
ILMAX
PACKAGE CODE
RL
IB#3NB
IB#5NB
The sum of t
nal timing generator of the DS1990A on the other side
define the master sampling window (t
t
the data line. For most reliable communication, t
should be as short as permissible and the master should
read close to but no later than t
from the data line, the master must wait until t
expired. This guarantees sufficient recovery time t
for the DS1990A to get ready for the next time slot.
MSRMAX
Serial Number iButton
) in which the master must perform a read from
RL
+ δ (rise time) on one side and the inter-
Package Information
DOCUMENT NO.
21-0252
21-0266
MSRMAX
. After reading
MSRMIN
SLOT
REC
RL
to
9
is