參數(shù)資料
型號： MC74HC390D
廠商： ON SEMICONDUCTOR
元件分類： 通用總線功能
英文描述： Dual 4-Stage Binary Ripple Counter with ±2 and ±5 Sections
中文描述： HC/UH SERIES, ASYN NEGATIVE EDGE TRIGGERED 3-BIT UP DECADE COUNTER, PDSO16
封裝： PLASTIC, SOIC-16
文件頁數(shù)： 4/8頁
文件大?。?/td> 216K
代理商： MC74HC390D
MC54/74HC390
MOTOROLA
High–Speed CMOS Logic Data
DL129 — Rev 6
4
PIN DESCRIPTIONS
INPUTS
Clock A (Pins 1, 15) and Clock B (Pins 4, 15)
Clock A is the clock input to the
÷
2 counter; Clock B is the
clock input to the
÷
5 counter. The internal flip–flops are
toggled by high–to–low transitions of the clock input.
CONTROL INPUTS
Reset (Pins 2, 14)
Asynchronous reset. A high at the Reset input prevents
counting, resets the internal flip–flops, and forces QA through
QD low.
OUTPUTS
QA (Pins 3, 13)
Output of the
÷
2 counter.
QB, QC, QD (Pins 5, 6, 7, 9, 10, 11)
Outputs of the
÷
5 counter. QD is the most significant bit.
QA is the least significant bit when the counter is connected
for BCD output as in Figure 4. QB is the least significant bit
when the counter is operating in the bi–quinary mode as in
Figure 5.
SWITCHING WAVEFORMS
Q
tr
tf
tPLH
tPHL
tTLH
tTHL
VCC
GND
CLOCK
10%
10%
50%
1/fmax
tw
trec
RESET
Figure 1.
Figure 2.
VCC
GND
VCC
GND
10%
90%
Q
CLOCK
50%
50%
50%
tPHL
tw
TEST CIRCUIT
* Includes all probe and jig capacitance
CL*
TEST POINT
DEVICE
UNDER
TEST
OUTPUT
Figure 3.
相關(guān)PDF資料
PDF描述
MC74HC390N Dual 4-Stage Binary Ripple Counter with ±2 and ±5 Sections
MC74HC390AD Dual 4-Stage Binary Ripple Counter with ±2and ±5 Sections
MC74HC390ADT Dual 4-Stage Binary Ripple Counter with ±2and ±5 Sections
MC74HC390AN Dual 4-Stage Binary Ripple Counter with ±2and ±5 Sections
MC74HC390D Dual 4-Stage Binary Ripple Counter with ±2and ±5 Sections
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MC74HC390DR2 制造商:ON Semiconductor 功能描述:Counter/Divider Dual 4-Bit Decade UP 16-Pin SOIC T/R 制造商:Rochester Electronics LLC 功能描述:- Bulk
MC74HC390N 制造商:Motorola Inc 功能描述:Counter, Up, 16 Pin, Plastic, DIP
MC74HC393AD 功能描述:計數(shù)器移位寄存器 2-6V Dual 4-Stage RoHS:否 制造商:Texas Instruments 計數(shù)器類型: 計數(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 傳播延遲時間:650 ns 最大工作溫度:+ 125 C 最小工作溫度:- 40 C 封裝:Reel
MC74HC393ADG 功能描述:計數(shù)器移位寄存器 2-6V Dual 4-Stage Binary RoHS:否 制造商:Texas Instruments 計數(shù)器類型: 計數(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 傳播延遲時間:650 ns 最大工作溫度:+ 125 C 最小工作溫度:- 40 C 封裝:Reel
MC74HC393ADR2 功能描述:計數(shù)器移位寄存器 2-6V Dual 4-Stage RoHS:否 制造商:Texas Instruments 計數(shù)器類型: 計數(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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