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參數(shù)資料
| 型號(hào)： | MC14516B |
| 廠商： | ON SEMICONDUCTOR |
| 元件分類： | 通用總線功能 |
| 英文描述： | Binary Up/Down Counter(二進(jìn)制雙向計(jì)數(shù)器) |
| 中文描述： | 二進(jìn)制加/減計(jì)數(shù)器（二進(jìn)制雙向計(jì)數(shù)器） |
| 文件頁數(shù)： | 6/11頁 |
| 文件大?。?/td> | 123K |
| 代理商： | MC14516B |
MC14516B
http://onsemi.com
6
TOGGLE FLIPFLOP
PE
C
T
Q
Q
P
PARALLEL IN
FLIPFLOP FUNCTIONAL TRUTH TABLE
Preset
Enable
Clock
T
Q
n+1
1
X
X
Parallel In
0
0
Q
n
0
1
Q
n
0
X
Q
n
X = Don’t Care
Figure 2. Switching Time Waveforms
V
DD
V
SS
V
DD
V
SS
V
DD
V
SS
V
DD
V
SS
V
OL
V
OH
RESET
PRESET ENABLE
CARRY IN OR
UP/DOWN
CLOCK
Q
0
OR CARRY OUT
t
rem
t
su
t
rem
t
h
t
TLH
t
PLH
t
PHL
t
PLH
t
THL
50%
50%
90%
10%
50%
90%
10%
CARRY OUT ONLY
t
w(H)
t
w(H)
t
w
1
f
cl
PIN DESCRIPTIONS
INPUTS
P0, P1, P2, P3, Preset Inputs (Pins 4, 12, 13, 3)
—
Data
on these inputs is loaded into the counter when PE is taken
high.
Carry In, (Pin 5)
—
This activelow input is used when
Cascading stages. Carry In is usually connected to Carry Out
of the previous stage. While high, Clock is inhibited.
Clock, (Pin 15)
—
Binary data is incremented or
decremented, depending on the direction of count, on the
positive transition of this input.
OUTPUTS
Q0, Q1, Q2, Q3, Binary outputs (Pins 6, 11, 14, 2)
—
Binary data is present on these outputs with Q0
corresponding to the least significant bit.
Carry Out, (Pin 7)
—
Used when cascading stages, Carry
Out is usually connected to Carry In of the next stage. This
synchronous output is active low and may also be used to
indicate terminal count.
CONTROLS
PE, Preset Enable, (Pin 1)
—
Asynchronously loads data
on the Preset Inputs. This pin is active high and inhibits the
clock when high.
R, Reset, (Pin 9)
—
Asynchronously resets the Q out
puts to a low state. This pin is active high and inhibits the
clock when high.
Up/Down, (Pin 10)
—
Controls the direction of count,
high for up count, low for down count.
SUPPLY PINS
V
SS
, Negative Supply Voltage, (Pin 8)
—
This pin is
usually connected to ground.
V
DD
, Positive Supply Voltage, (Pin 16)
—
This pin is
connected to a positive supply voltage ranging from 3.0 V
to 18 V.
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| MC14516BALD | 制造商:Motorola Inc 功能描述:Counter, Up/Down, 4 Bit Binary, 16 Pin, Ceramic, DIP |
| MC14516BCP | 功能描述:計(jì)數(shù)器移位寄存器 3-18V Binary Up/Down RoHS:否 制造商:Texas Instruments 計(jì)數(shù)器類型: 計(jì)數(shù)順序:Serial to Serial/Parallel 電路數(shù)量:1 封裝 / 箱體:SOIC-20 Wide 邏輯系列: 邏輯類型: 輸入線路數(shù)量:1 輸出類型:Open Drain 傳播延遲時(shí)間:650 ns 最大工作溫度:+ 125 C 最小工作溫度:- 40 C 封裝:Reel |
| MC14516BCPG | 功能描述:計(jì)數(shù)器移位寄存器 3-18V Binary Up/Down RoHS:否 制造商:Texas Instruments 計(jì)數(shù)器類型: 計(jì)數(shù)順序:Serial to Serial/Parallel 電路數(shù)量:1 封裝 / 箱體:SOIC-20 Wide 邏輯系列: 邏輯類型: 輸入線路數(shù)量:1 輸出類型:Open Drain 傳播延遲時(shí)間:650 ns 最大工作溫度:+ 125 C 最小工作溫度:- 40 C 封裝:Reel |
| MC14516BD | 功能描述:計(jì)數(shù)器移位寄存器 3-18V Binary Up/Down RoHS:否 制造商:Texas Instruments 計(jì)數(shù)器類型: 計(jì)數(shù)順序:Serial to Serial/Parallel 電路數(shù)量:1 封裝 / 箱體:SOIC-20 Wide 邏輯系列: 邏輯類型: 輸入線路數(shù)量:1 輸出類型:Open Drain 傳播延遲時(shí)間:650 ns 最大工作溫度:+ 125 C 最小工作溫度:- 40 C 封裝:Reel |
| MC14516BDG | 功能描述:計(jì)數(shù)器移位寄存器 3-18V Binary Up/Down RoHS:否 制造商:Texas Instruments 計(jì)數(shù)器類型: 計(jì)數(shù)順序:Serial to Serial/Parallel 電路數(shù)量:1 封裝 / 箱體:SOIC-20 Wide 邏輯系列: 邏輯類型: 輸入線路數(shù)量:1 輸出類型:Open Drain 傳播延遲時(shí)間:650 ns 最大工作溫度:+ 125 C 最小工作溫度:- 40 C 封裝:Reel |
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