PCF8574; PCF8574A
NXP Semiconductors
Remote 8-bit I/O expander for I2C-bus with interrupt
Table 15. Revision history …continued
Document ID
Release date
Data sheet status
Change notice
Supersedes
Modifications: (continued)
• Table 7 “Limiting values”:
–
–
changed parameter description for symbol II from “DC input current” to “input current”
changed parameter description for symbol IO from “DC output current” to “output
current”
–
changed parameter description for symbol ISS from “supply current” to “ground supply
current”
–
–
changed symbol “PO” to “P/out”
added Tj(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 Itrt(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 “I2C-bus timing”: deleted symbol/parameter “tSW, tolerable spike width on
bus”
sub-section “Port timing”: changed symbol/parameter from “tpv, output data valid time”
to “tv(Q), data output valid time”
sub-section “Port timing”: changed symbol/parameter from “tsu, input data set-up time”
to “tsu(D), data input set-up time”
sub-section “Port timing”: changed symbol/parameter from “th, input data hold time”
to “th(D), data input hold time”
sub-section “Interrupt INT”: changed parameter description for symbol tv(INT)
from “INT output valid time” to “valid time on pin INT”
sub-section “Interrupt INT”: changed parameter description for symbol trst(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
20020729
19970402
Product specification
Product specification
Product specification
Product specification
-
-
-
-
PCF8574 v.3
PCF8574 v.3
(9397 750 09911)
PCF8574 v.2
PCF8574 v.2
(9397 750 01758)
PCF8574_PCF8574A v.1
-
PCF8574_PCF8574A v.1 199409
(9397 750 70011)
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 [ NXP ]
