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參數(shù)資料
| 型號： | HEF4541B |
| 廠商： | NXP Semiconductors N.V. |
| 英文描述： | Programmable timer(可編程定時器) |
| 中文描述： | 可編程定時器（可編程定時器） |
| 文件頁數(shù)： | 2/8頁 |
| 文件大?。?/td> | 144K |
| 代理商： | HEF4541B |
January 1995
2
Philips Semiconductors
Product specification
Programmable timer
HEF4541B
MSI
DESCRIPTION
The HEF4541B is a programmable timer which consists of
a 16-stage binary counter, an integrated oscillator to be
used with external timing components, an automatic
power-on reset and output control logic. The frequency of
the oscillator is determined by the external components
R
t
and C
t
within the frequency range 1 Hz to 100 kHz. This
oscillator may be replaced by an external clock signal at
input RS, the timer advances on the positive-going
transition of RS. A LOW on the auto reset input (AR) and
a LOW on the master reset input (MR) enables the internal
power-on reset. A HIGH level at input MR resets the
counter independent on all other inputs. Resetting
disables the oscillator to provide no active power
dissipation.
A HIGH at input AR turns off the power-on reset to provide
a low quiescent power dissipation of the timer. The
16-stage counter divides the oscillator frequency by
2
8
, 2
10
, 2
13
or 2
16
depending on the state of the address
inputs (A
0
, A
1
). The divided oscillator frequency is
available at output O. The phase input (PH) features a
complementary output signal. If the mode select input
(MODE) is LOW or HIGH the timer can be used
respectively as a single transition timer or 2
n
frequency
divider.
Fig.1 Functional diagram.
Fig.2 Pinning diagram.
FAMILY DATA, I
DD
LIMITS category MSI
See Family Specifications
HEF4541BP(N):
14-lead DIL; plastic
(SOT27-1)
14-lead DIL; ceramic (cerdip)
(SOT73)
14-lead SO; plastic
(SOT108-1)
HEF4541BD(F):
HEF4541BT(D):
( ): Package Designator North America
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| HEF4541BP | 制造商:NXP Semiconductors 功能描述:Programmable 制造商:NXP Semiconductors 功能描述:Programmable Bulk 制造商:NXP Semiconductors 功能描述:IC 4000 LOCMOS LOGIC 制造商:NXP Semiconductors 功能描述:IC, 4000 LOCMOS LOGIC 制造商:NXP Semiconductors 功能描述:IC, PROG TIMER, SINGLE, 100KHZ 15V DIP14; Operating Mode:-; No. of Timers:1; Frequency:100kHz; Supply Voltage Min:5V; Supply Voltage Max:15V; Digital IC Case Style:DIP; No. of Pins:14; Clock External Input:No; Package / Case:14-DIP ;RoHS Compliant: Yes |
| HEF4541BP,652 | 功能描述:計時器和支持產(chǎn)品 PROGRAMMABLE TIMER RoHS:否 制造商:Micrel 類型:Standard 封裝 / 箱體:SOT-23 內(nèi)部定時器數(shù)量:1 電源電壓-最大:18 V 電源電壓-最小:2.7 V 最大功率耗散: 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝:Reel |
| HEF4541BP652 | 制造商:NXP Semiconductors 功能描述:IC PROG TIMER SINGLE 100KHZ 15V DIP14 |
| HEF4541BT | 功能描述:計時器和支持產(chǎn)品 PROGRAMMABLE TIMER RoHS:否 制造商:Micrel 類型:Standard 封裝 / 箱體:SOT-23 內(nèi)部定時器數(shù)量:1 電源電壓-最大:18 V 電源電壓-最小:2.7 V 最大功率耗散: 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝:Reel |
| HEF4541BT,512 | 功能描述:計時器和支持產(chǎn)品 PROGRAMMABLE TIMER RoHS:否 制造商:Micrel 類型:Standard 封裝 / 箱體:SOT-23 內(nèi)部定時器數(shù)量:1 電源電壓-最大:18 V 電源電壓-最小:2.7 V 最大功率耗散: 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝:Reel |
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