參數(shù)資料
型號(hào)： HCF4026BM1
廠商： 意法半導(dǎo)體
元件分類： 通用總線功能
英文描述： 7-SEGMENT DISPLAY OUTPUTS DECADE COUNTERS/DIVIDERS WITH DECODED
中文描述： 7段顯示器輸出十年計(jì)數(shù)器/帶解碼分壓器
文件頁(yè)數(shù)： 2/15頁(yè)
文件大?。?/td> 319K
代理商： HCF4026BM1
cade counter to its zero count. The counter is ad-
vanced one count at the positive clock signal tran-
sition if the CLOCK INHIBIT signal is low. Counter
advancement via the clock line is inhibited when the
CLOCK INHIBIT signal is high. Antilock gating is
provided on the JOHNSON counter, thus assuring
propercounting sequence. The CARRY-OUT(C
out
)
signal completes one cycle every ten CLOCK
INPUT cycles and is used to clock the succeeding
decade directly in a multi-decade counting chain.
The seven decoded outputs (a,b, c,d,e, f, g)illumi-
nate the proper segments in a seven segment dis-
play device used for representing the decimal
numbers 0 to 9. The 7-segment outputs go high on
selection in the
HCC/HCF4033B
; in the
HCC/-
HCF4026B
these outputs go high only when the
DISPLAY ENABLEIN is high.
HCC/HCF4026B
- When theDISPLAY ENABLE IN
is lowtheseven decoded outputs are forced low re-
gardless of the stateof the counter. Activationof the
display only when required results in significant
power savings. This system also facilitates im-
plementation of display-character multiplexing. The
CARRY OUT and UNGATED ”C-SEGMENT” sig-
nals are not gated by the DISPLAY ENABLE and
therefore are available continuously. This feature is
a requirement in implementation of certain divider
functions such as divide-by-60 and divide-by-12.
HCC/HCF4033B
- The
HCC/HCF4033B
hasprovi-
sions for automatic blanking of the non-significant
zeros in a multi-digit decimal number whichresults
in an easily readable display consistent with
normal writing practice. For example, the number
0050.07000 in an eight digit display would be dis-
played as 50.07. Zero suppression on the integer
side is obtained by connecting the RBI terminal of
the
HCC/HCF4033B
associated with the most sig-
nificantdigitin thedisplay to a low-level voltageand
connectingthe RBOterminal ofthat stagetothe RBI
terminal of the
HCC/HCF4033B
in the next-lower
significant position inthe display. This procedure is
continued for each succeeding
HCC/HCF4033B
on
the integer side of the display. On the fraction side
of thedisplay the RBI of the
HCC/HCF4033B
asso-
ciatedwith the least significant bit is connected to a
low-level voltage and the RBO of that
HCC/-
HCF4033B
is connected to the RBI terminal of the
HCC/HCF4033B
inthe next more-significant-bit po-
sition. Again, this procedure is continued for all
HCC/HCF4033B’s
on the fraction side of the dis-
play.In a purely fractionalnumber thezero immedi-
ately preceding the decimal point can be displayed
by connecting the RBI of that stage to a high level
voltage(instead of to the RBO of thenext more-sig-
nificant-stage). For example : optional zero
→
0.7346. Likewise, the zero in a number such as
763.0canbedisplayed byconnectingtheRBIofthe
HCC/HCF4033B
associated with it to a high-level
voltage. Ripple blanking of non-significant zeros
provides an appreciable savings in display power.
The
HCC/HCF4033B
has a LAMP TEST input
which, when connected to a high-level voltage,
overrides normal decoder operation and enables a
checkto be made on possible display malfunctions
by putting the seven outputsin thehigh state.
HCC/HCF4026B/4033B
2/15
相關(guān)PDF資料
PDF描述
HCC4034B INPUT/OUTPUT BUS REGISTER 8-STAGE STATIC BIDIRECTIONAL PARALLEL/SERIAL
HCF4034BM1 INPUT/OUTPUT BUS REGISTER 8-STAGE STATIC BIDIRECTIONAL PARALLEL/SERIAL
HCC4034BF INPUT/OUTPUT BUS REGISTER 8-STAGE STATIC BIDIRECTIONAL PARALLEL/SERIAL
HCF4034 Differential Bus Transceiver 8-SOIC 0 to 70
HCF4034B Differential Bus Transceiver 8-PDIP 0 to 70
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
HCF4027 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:DUAL-J-K MASTER-SLAVE FLIP-FLOP
HCF4027B 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:DUAL-J-K MASTER-SLAVE FLIP-FLOP
HCF4027B_02 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:DUAL J-K MASTER SLAVE FLIP-FLOP
HCF4027BC1 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:DUAL-J-K MASTER-SLAVE FLIP-FLOP
HCF4027BEY 功能描述:觸發(fā)器 RO 526-NTE4027B 2/05 RoHS:否 制造商:Texas Instruments 電路數(shù)量:2 邏輯系列:SN74 邏輯類型:D-Type Flip-Flop 極性:Inverting, Non-Inverting 輸入類型:CMOS 輸出類型: 傳播延遲時(shí)間:4.4 ns 高電平輸出電流:- 16 mA 低電平輸出電流:16 mA 電源電壓-最大:5.5 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:X2SON-8 封裝:Reel
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