Datasheet 搜索 > Nexperia（安世） > HEF4541BT,653 数据手册 > HEF4541BT,653 用户编程技术手册 1/17 页
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HEF4541BT,653 用户编程技术手册 - Nexperia（安世）
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HEF4541BT,653数据手册
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1. General description
The HEF4541B-Q100 is a programmable timer. It 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 external components R
TC
and C
TC
determines the frequency of the oscillator within the frequency range 1 Hz to 100 kHz. An
external clock signal at input RS can replace the oscillator. 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 (A0, A1). The divided oscillator
frequency is available at output O. The phase input (PH) features a complementary output
signal. When the mode select input (MODE) is LOW the timer is a single transition timer
and when HIGH the timer is a 2
n
frequency divider.
It operates over a recommended V
DD
power supply range of 3 V to 15 V referenced to V
SS
(usually ground). Unused inputs must be connected to V
DD
, V
SS
, or another input.
This product has been qualified to the Automotive Electronics Council (AEC) standard
Q100 (Grade 1) and is suitable for use in automotive applications.
2. Features and benefits
Automotive product qualification in accordance with AEC-Q100 (Grade 1)
Specified from 40 C to +85 C and from 40 C to +125 C
Fully static operation
5 V, 10 V, and 15 V parametric ratings
Standardized symmetrical output characteristics
ESD protection:
MIL-STD-883, method 3015 exceeds 2000 V
HBM JESD22-A114F exceeds 2000 V
MM JESD22-A115-A exceeds 200 V (C = 200 pF, R = 0 )
Complies with JEDEC standard JESD 13-B
HEF4541B-Q100
Programmable timer
Rev. 2 — 31 December 2013 Product data sheet
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