參數(shù)資料
型號: 933637620112
廠商: NXP SEMICONDUCTORS
元件分類: 諧振器
英文描述: 4000/14000/40000 SERIES, PRESCALER, PDIP18
封裝: PLASTIC, SOT-102-3, DIP-18
文件頁數(shù): 5/11頁
文件大?。?/td> 115K
代理商: 933637620112
January 1995
3
Philips Semiconductors
Product specication
Universal timer module
HEF4753B
LSI
HEF4753BP(N):
18-lead DIL; plastic
(SOT102-3)
HEF4753BD(N):
18-lead DIL; ceramic (cerdip)
(SOT133)
( ): Package Designator North America
Fig.2 Pinning diagram.
FUNCTION TABLES
Notes
1. H = HIGH state (the more positive voltage).
2. L = LOW state (the less positive voltage).
INPUTS
OPERATING MODE
LFC
Y
Z
L
H
counter
L
H
L
divider
H
L
delayed LOW to HIGH edge
H
L
H
delayed HIGH to LOW edge
H
transient pulse suppression
L
H
frequency recognition
LFC
L
digital pulse duration selector
Programmable 8-bit counter (1)
Note
1. All inputs A to H HIGH is not allowed.
INPUTS ACTIVE LOW
VALUE
A1
B2
C4
D8
E16
F32
G64
H
128
12-bit predivider
WX
CLOCK FOR PROGRAMMABLE
COUNTER
CP/X
L
X=1
L
H
X =16
H
L
X = 256
H
X = 4096
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