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| 型号： | 74HC6323AD,112 |
| 厂商： | NXP Semiconductors |
| 文件页数： | 8/15页 |
| 文件大小： | 0K |
| 描述： | IC PROG RIPPLE COUNT W/OSC 8SOIC |
| 产品培训模块： | Logic Packages |
| 标准包装： | 100 |
| 系列： | 74HC |
| 逻辑类型： | 二进制计数器 |
| 方向： | 上 |
| 元件数： | 1 |
| 每个元件的位元数： | 2 |
| 复位： | 异步 |
| 计数速率： | 100MHz |
| 触发器类型： | 负边沿 |
| 电源电压： | 2 V ~ 6 V |
| 工作温度： | -40°C ~ 125°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 8-SOIC（0.154"，3.90mm 宽） |
| 供应商设备封装： | 8-SO |
| 包装： | 管件 |
| 产品目录页面： | 835 (CN2011-ZH PDF) |
| 其它名称： | 568-2722-5 935013710112 |
September 1993
2
Philips Semiconductors
Product specication
Programmable ripple counter with
oscillator; 3-state
74HC/HCT6323A
FEATURES
8-pin space saving package
Programmable 3-stage ripple
counter
Suitable for over-tone crystal
application up to 50 MHz
(VCC =5V ± 10%)
3-state output buffer
Two internal capacitors
Recommended operating range for
use with third overtone crystals
3to6V
Oscillator stop function (MR)
Output capability:
bus driver
→ (15 LSTTL)
ICC category: MSI.
APPLICATIONS
Control counters
Timers
Frequency dividers
Time-delay circuits
CIO (Compact Integrated
Oscillator)
Third-overtone crystal operation.
GENERAL DESCRIPTION
The HC/HCT6323A are high-speed
Si-gate CMOS devices.
They are specified in compliance with
JEDEC standard no. 7A.
The HC/HCT6323A are oscillators
designed for quartz crystal combined
with a programmable 3-state counter,
a 3-state output buffer and an
overriding asynchronous master
reset (MR). With the two select inputs
S1 and S2 the counter can be
switched in the divide-by-1, 2, 4 or 8
mode. If left floating the clock is
divided by 8. The oscillator is
designed to operate either in the
fundamental or third overtone mode
depending on the crystal and external
components applied. On-chip
capacitors minimize external
component count for third overtone
crystal applications.
The oscillator may be replaced by an
external clock signal at input X1. In
this event the other oscillator pin (X2)
must be floating. The counter
advances on the negative-going
transition of X1. A LOW level on MR
resets the counter, stops the oscillator
and sets the output buffer in the
3-state condition. MR can be left
floating since an internal pull-up
resistor will make the MR inactive. In
the HCT version, the MR input and
the two mode select pins S1 and S2
are TTL compatible, but the X1 input
has CMOS input switching levels and
may be driven by a TTL output using
a pull-up resistor connected to VCC.
QUICK REFERENCE DATA
GND = 0 V; Tamb = 25 °C; tr = tf = 6 ns.
Notes
1. CPD is used to determine the dynamic power dissipation (PD in W):
PD = (CPD x VCC2 x fi) + (CL + VCC2 x fo) + (Ipull-up x VCC)
where:
fi = input frequency in MHz; fo = output frequency in MHz.
VCC = supply voltage in V; CL = output load capacitance in pF.
Ipull-up = pull-up currents in A.
2. For HC and HCT an external clock is applied to X1 with:
tr = tf ≤ 6 ns, Vi is GND to VCC, MR = HIGH
Ipull-up is the summation of II (A) of S1 and S2 inputs at the LOW state.
ORDERING INFORMATION
SYMBOL
PARAMETER
CONDITIONS
TYP.
UNIT
HC
HCT
tPHL/tPLH
propagation delay
X1 to OUT
(S1 = S2 = LOW)
CL = 15 pF;
VCC = 5 V
17
ns
fmax
maximum clock
frequency
90
MHz
CI
input capacitance
except X1 and X2
3.5
pF
CPD
power dissipation
capacitance per
package
+1; notes 1 and 2
54
pF
+2; notes 1 and 2
42
pF
+4; notes 1 and 2
36
pF
+8; notes 1 and 2
33
pF
EXTENDED TYPE
NUMBER
PACKAGE
PINS
PIN POSITION
MATERIAL
CODE
74HC/HCT6323AD
8
SO
plastic
SOT96
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