Datasheet

LM75A
www.ti.com SNOS808O –JANUARY 2000–REVISED MAY 2013
I
2
C DIGITAL SWITCHING CHARACTERISTICS
Unless otherwise noted, these specifications apply for +V
S
= +2.7 to 5.5 Vdc for LM75AIM and LM75AIMM on output lines =
80 pF unless otherwise specified. Boldface limits apply for T
A
= T
J
= T
MIN
to T
MAX
; all other limits T
A
= T
J
= +25°C, unless
otherwise noted.
Units
Symbol Parameter Conditions Typical
(1)
Limits
(2)(3)
(Limit)
t
1
SCL (Clock) Period 2.5 μs (min)
t
2
Data in Set-Up Time to SCL High 100 ns (min)
t
3
Data Out Stable after SCL Low 0 ns (min)
t
4
SDA Low Set-Up Time to SCL Low (Start Condition) 100 ns (min)
t
5
SDA High Hold Time after SCL High (Stop Condition) 100 ns (min)
75 ms (min)
t
TIMEOUT
SDA Time Low for Reset of Serial Interface
(4)
LM75A
325 ms (max)
(1) Typicals are at T
A
= 25°C and represent most likely parametric norm.
(2) Limits are ensured to AOQL (Average Outgoing Quality Level).
(3) Timing specifications are tested at the bus input logic levels (Vin(0)=0.3XVA for a falling edge and Vin(1)=0.7XVA for a rising edge)
when the SCL and SDA edge rates are similar.
(4) Holding the SDA line low for a time greater than t
TIMEOUT
will cause the LM75A to reset SDA to the IDLE state of the serial bus
communication (SDA set High).
Figure 4.
Figure 5. Temperature-to-Digital Transfer Function (Non-linear scale for clarity)
Copyright © 2000–2013, Texas Instruments Incorporated Submit Documentation Feedback 5
Product Folder Links: LM75A