參數(shù)資料
型號： HEF4060BDF
廠商： NXP SEMICONDUCTORS
元件分類： 通用總線功能
英文描述： MSI 14-stage ripple-carry binary counter/divider and oscillator
中文描述： 4000/14000/40000 SERIES, ASYN NEGATIVE EDGE TRIGGERED 14-BIT UP BINARY COUNTER, CDIP16
封裝： SOT-74, CERDIP-16
文件頁數(shù)： 6/7頁
文件大小： 110K
代理商： HEF4060BDF
January 1995
6
Philips Semiconductors
Product specification
14-stage ripple-carry binary counter/divider
and oscillator
HEF4060B
MSI
Timing component limitations
The oscillator frequency is mainly determined by
R
t
C
t
, provided R
t
<< R2 and R2C2 << R
t
C
t
. The function
of R2 is to minimize the influence of the forward voltage
across the input protection diodes on the frequency. The
stray capacitance C2 should be kept as small as possible.
In consideration of accuracy, C
t
must be larger than the
inherent stray capacitance. R
t
must be larger than the
LOCMOS ‘ON’ resistance in series with it, which typically
is 500
at V
DD
= 5 V, 300
at V
DD
= 10 V and 200
at
V
DD
= 15 V.
The recommended values for these components to
maintain agreement with the typical oscillation formula are:
C
t
≥
100 pF, up to any practical value,
10 k
≤
R
t
≤
1 M
.
Typical crystal oscillator circuit
In Fig.5, R2 is the power limiting resistor. For starting and
maintaining oscillation a minimum transconductance is
necessary.
Fig.5
External component connection for crystal
oscillator.
Fig.6
Test set-up for measuring forward transconductance g
fs
= di
o
/dv
i
at v
o
is constant (see also graph Fig.7);
MR = LOW.
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
HEF4060BF 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:14-stage ripple-carry binary counter/divider and oscillator
HEF4060BN 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:14-stage ripple-carry binary counter/divider and oscillator
HEF4060BP 制造商:NXP Semiconductors 功能描述:IC 4000 LOCMOS LOGIC 制造商:NXP Semiconductors 功能描述:IC, 4000 LOCMOS LOGIC 制造商:NXP Semiconductors 功能描述:IC, 4000 LOCMOS LOGIC; Counter Type:Binary; Clock Frequency:30MHz; Count Maximum:14; Supply Voltage Min:4.5V; Supply Voltage Max:15.5V; Logic Case Style:DIP; No. of Pins:16; Operating Temperature Min:-40C; Operating Temperature ;RoHS Compliant: Yes
HEF4060BP,652 功能描述:計數(shù)器 IC 14-STG RC BIN CTR/DIV W/OSC. RoHS:否 制造商:NXP Semiconductors 計數(shù)器類型:Binary Counters 邏輯系列:74LV 位數(shù):10 計數(shù)法: 計數(shù)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
HEF4060BP652 制造商:NXP Semiconductors 功能描述:IC 14 STAGE BINARY RIPPLE COUNTER / DIV
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