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參數資料
| 型號： | HEF4518BP |
| 廠商： | NXP Semiconductors N.V. |
| 元件分類： | 通用總線功能 |
| 英文描述： | Dual BCD counter |
| 封裝： | HEF4518BP<SOT38-4 (DIP16)|<<http://www.nxp.com/packages/SOT38-4.html<1<Always Pb-free,;HEF4518BT<SOT109-1 (SO16)|<<http://www.nxp.com/packages/SOT109-1.html<1<week |
| 文件頁數： | 1/14頁 |
| 文件大小： | 132K |
| 代理商： | HEF4518BP |
1.
General description
The HEF4518B is a dual 4-bit internally synchronous BCD counter. The counter has an
active HIGH clock input (nCP0) and an active LOW clock input (nCP1), buffered outputs
from all four bit positions (nQ0 to nQ3) and an active HIGH overriding asynchronous
master reset input (nMR). The counter advances on either the LOW-to-HIGH transition of
the nCP0 input if nCP1 is HIGH or the HIGH-to-LOW transition of the nCP1 input if nCP0
is LOW. Either nCP0 or nCP1 may be used as the clock input to the counter and the other
clock input may be used as a clock enable input. A HIGH on nMR resets the counter (nQ0
to nQ3 = LOW) independent of nCP0, nCP1. Schmitt trigger action in the clock input
makes the circuit highly tolerant of slower clock rise and fall times.
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. It is
also suitable for use over the full industrial (
40
°
C to +85
°
C) temperature range.
2.
Features
Tolerant of slow clock rise and fall times
Fully static operation
5 V, 10 V, and 15 V parametric ratings
Standardized symmetrical output characteristics
Operates across the full industrial temperature range
40
°
C to +85
°
C
Complies with JEDEC standard JESD 13-B
3.
Applications
Multistage synchronous counting
Multistage asynchronous counting
Frequency dividers
4.
Ordering information
HEF4518B
Dual BCD counter
Rev. 06 — 10 December 2009
Product data sheet
Table 1.
All types operate from
40
°
C to +85
°
C
Type number
Ordering information
Package
Name
DIP16
SO16
Description
plastic dual in-line package; 16 leads (300 mil)
plastic small outline package; 16 leads; body width 3.9 mm
Version
SOT38-4
SOT109-1
HEF4518BP
HEF4518BT
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|---|---|
| HEF4518BT | Dual BCD counter |
| HEF4520BP | Dual binary counter |
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| HEF4521BT | 24-stage frequency divider and oscillator |
相關代理商/技術參數 |
參數描述 |
|---|---|
| HEF4518BP,652 | 功能描述:計數器 IC DUAL BCD COUNTER RoHS:否 制造商:NXP Semiconductors 計數器類型:Binary Counters 邏輯系列:74LV 位數:10 計數法: 計數順序: 工作電源電壓:1 V to 5.5 V 工作溫度范圍:- 40 C to + 125 C 封裝 / 箱體:SOT-109 封裝:Reel |
| HEF4518BP652 | 制造商:NXP Semiconductors 功能描述:IC BCD COUNTER DUAL DIP-16 |
| HEF4518BT | 制造商:NXP Semiconductors 功能描述:Counter Dual 4-Bit Decade UP 16-Pin SO Bulk |
| HEF4518BT,652 | 功能描述:計數器 IC DUAL BCD COUNTER RoHS:否 制造商:NXP Semiconductors 計數器類型:Binary Counters 邏輯系列:74LV 位數:10 計數法: 計數順序: 工作電源電壓:1 V to 5.5 V 工作溫度范圍:- 40 C to + 125 C 封裝 / 箱體:SOT-109 封裝:Reel |
| HEF4518BT,653 | 功能描述:計數器 IC DUAL BCD COUNTER RoHS:否 制造商:NXP Semiconductors 計數器類型:Binary Counters 邏輯系列:74LV 位數:10 計數法: 計數順序: 工作電源電壓:1 V to 5.5 V 工作溫度范圍:- 40 C to + 125 C 封裝 / 箱體:SOT-109 封裝:Reel |
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