Datasheet

PCF8574_PCF8574A All information provided in this document is subject to legal disclaimers. © NXP B.V. 2013. All rights reserved.
Product data sheet Rev. 5 — 27 May 2013 30 of 33
NXP Semiconductors
PCF8574; PCF8574A
Remote 8-bit I/O expander for I
2
C-bus with interrupt
Modifications: (continued) • Table 7 “Limiting values”:
– changed parameter description for symbol I
I
from “DC input current” to “input current”
– changed parameter description for symbol I
O
from “DC output current” to “output
current”
– changed parameter description for symbol I
SS
from “supply current” to “ground supply
current”
– changed symbol “P
O
” to “P/out”
– added T
j(max)
limits
• Added Section 12 “Thermal characteristics”
• Table 9 “Static characteristics”:
– table title changed from “DC characteristics” to “Static characteristics”
– sub-section “I/Os; P0 to P7”: changed parameter description for symbol I
trt(pu)
from “transient pull-up current” to “transient boosted pull-up current”
– moved sub-section “Port timing” to Table 10 “Dynamic characteristics”
– sub-section “Interrupt INT”: moved sub-sub-section “Timing” to Table 10 “Dynamic
characteristics”
• Table 10 “Dynamic characteristics”:
– sub-section “I
2
C-bus timing”: deleted symbol/parameter “t
SW
, tolerable spike width on
bus”
– sub-section “Port timing”: changed symbol/parameter from “t
pv
, output data valid time”
to “t
v(Q)
, data output valid time”
– sub-section “Port timing”: changed symbol/parameter from “t
su
, input data set-up time”
to “t
su(D)
, data input set-up time”
– sub-section “Port timing”: changed symbol/parameter from “t
h
, input data hold time”
to “t
h(D)
, data input hold time”
– sub-section “Interrupt INT
”: changed parameter description for symbol t
v(INT)
from “INT
output valid time” to “valid time on pin INT”
– sub-section “Interrupt INT
”: changed parameter description for symbol t
rst(INT)
from “INT reset delay time” to “reset time on pin INT”
• Added Section 19 “Soldering: PCB footprints”
PCF8574 v.4
(9397 750 10462)
20021122 Product specification - PCF8574 v.3
PCF8574 v.3
(9397 750 09911)
20020729 Product specification - PCF8574 v.2
PCF8574 v.2
(9397 750 01758)
19970402 Product specification - PCF8574_PCF8574A v.1
PCF8574_PCF8574A v.1
(9397 750 70011)
199409 Product specification - -
Table 15. Revision history
…continued
Document ID Release date Data sheet status Change notice Supersedes