ICM7555IN Datasheet, PDF (20/22 Pages) NXP Semiconductors – General purpose CMOS timer

NXP Semiconductors
ICM7555
General purpose CMOS timer
16. Revision history
Table 10. Revision history
Document ID Release date
Data sheet status
Change notice
Supersedes
ICM7555_2
Modifications:
20090803
Product data sheet
-
ICM7555_1
• The format of this data sheet has been redesigned to comply with the new identity guidelines of NXP
Semiconductors.
• Legal texts have been adapted to the new company name where appropriate.
• Provided separate pinning diagrams for SO8 and DIP8 packages (Figure 2 and Figure 3,
respectively).
• Added Table 2 “Pin description”.
• Table 4 “Limiting values”:
– Symbols V_TRIG, V_CV, V_TH, V_RST are replaced with V_I (specific pin names are now noted under
Conditions column).
– Symbol/parameter “P_DMAX, maximum power dissipation” replaced with “P, power dissipation” (only
maximum values given).
– Symbol/parameter “T_STG, storage temperature range” replaced with “T_stg, storage temperature”.
– Symbol changed from “T_SOLD” to “T_sp, solder point temperature”
• Table 5 “Characteristics”:
– Symbols ∆f/f, ∆f/∆V, ∆f/∆T, have been added for Astable mode timing.
– Symbols V_TRIG, V_CV, V_TH, V_RST are replaced with V_I (specific pin names are now noted under
Conditions column).
– Symbols I_TRIG, I_TH, I_RST are replaced with I_I (specific pin names are now noted under Conditions
column).
– Symbol/parameter “V_DIS, discharge output voltage” changed to “V_o, output voltage” (specific pin
name is now noted under Conditions column).
– Symbol/parameter “t_R, rise time of output” changed to “t_r(o), output rise time”.
– Symbol/parameter “t_F, fall time of output” changed to “t_f(o), output fall time”.
– Symbol “F_MAX” changed to “f_osc, oscillator frequency”.
• Section 11.4 “Astable operation”: changed symbol for duty cycle from “D” to “δ”.
• Added Section 12 “Package outline”.
• Added soldering information.
• Added Section 15 “Abbreviations”.
ICM7555_1
19940831
Product specification
ECN 853-1192 13721 -
dated 1994 Aug 31
ICM7555_2
Product data sheet
Rev. 02 — 3 August 2009
© NXP B.V. 2009. All rights reserved.
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