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MC14521BD Datasheet

  • MC14521BD

  • ON Semiconductor [24−Stage Frequency Divider]

  • 119.39KB

  • ONSEMI

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MC14521B
24-Stage Frequency Divider
The MC14521B consists of a chain of 24 flip鈥揻lops with an input
circuit that allows three modes of operation. The input will function as
a crystal oscillator, an RC oscillator, or as an input buffer for an
external oscillator. Each flip鈥揻lop divides the frequency of the
previous flip鈥揻lop by two, consequently this part will count up to 2
24
=
16,777,216. The count advances on the negative going edge of the
clock. The outputs of the last seven鈥搒tages are available for added
flexibility.
http://onsemi.com
MARKING
DIAGRAMS
16
PDIP鈥?6
P SUFFIX
CASE 648
MC14521BCP
AWLYYWW
1
16
SOIC鈥?6
D SUFFIX
CASE 751B
1
16
SOEIAJ鈥?6
F SUFFIX
CASE 966
1
MC14521B
AWLYWW
14521B
AWLYWW
鈥?/div>
All Stages are Resettable
鈥?/div>
Reset Disables the RC Oscillator for Low Standby Power Drain
鈥?/div>
RC and Crystal Oscillator Outputs Are Capable of Driving External
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
Loads
Test Mode to Reduce Test Time
V
DD
鈥?/div>
and V
SS
鈥?/div>
Pins Brought Out on Crystal Oscillator Inverter to
Allow the Connection of External Resistors for Low鈥揚ower
Operation
Supply Voltage Range = 3.0 Vdc to 18 Vdc
Capable of Driving Two Low鈥損ower TTL Loads or One Low鈥損ower
Schottky TTL Load over the Rated Temperature Range.
MAXIMUM RATINGS
(Voltages Referenced to V
SS
) (Note 2.)
Symbol
V
DD
V
in
, V
out
I
in
, I
out
P
D
T
A
T
stg
T
L
Parameter
DC Supply Voltage Range
Input or Output Voltage Range
(DC or Transient)
Input or Output Current
(DC or Transient) per Pin
Power Dissipation,
per Package (Note 3.)
Ambient Temperature Range
Storage Temperature Range
Lead Temperature
(8鈥揝econd Soldering)
Value
鈥?0.5 to +18.0
鈥?0.5 to V
DD
+ 0.5
卤
10
500
鈥?55 to +125
鈥?65 to +150
260
Unit
V
V
mA
mW
掳C
掳C
掳C
A
= Assembly Location
WL or L = Wafer Lot
YY or Y = Year
WW or W = Work Week
ORDERING INFORMATION
Device
MC14521BCP
MC14521BD
MC14521BDR2
MC14521BF
MC14521BFEL
MC14521BFR2
Package
PDIP鈥?6
SOIC鈥?6
SOIC鈥?6
SOEIAJ鈥?6
SOEIAJ鈥?6
SOEIAJ鈥?6
Shipping
2000/Box
48/Rail
2500/Tape & Reel
See Note 1.
See Note 1.
See Note 1.
2. Maximum Ratings are those values beyond which damage to the device
may occur.
3. Temperature Derating:
Plastic 鈥淧 and D/DW鈥?Packages: 鈥?7.0 mW/
_
C From 65
_
C To 125
_
C
This device contains protection circuitry to guard against damage due to high
static voltages or electric fields. However, precautions must be taken to avoid
applications of any voltage higher than maximum rated voltages to this
high鈥搃mpedance circuit. For proper operation, V
in
and V
out
should be constrained
(V
in
or V
out
)
V
DD
.
to the range V
SS
Unused inputs must always be tied to an appropriate logic voltage level (e.g.,
either V
SS
or V
DD
). Unused outputs must be left open.
1. For ordering information on the EIAJ version of
the SOIC packages, please contact your local
ON Semiconductor representative.
v
v
漏
Semiconductor Components Industries, LLC, 2000
1
March, 2000 鈥?Rev. 3
Publication Order Number:
MC14521B/D

MC14521BD PDF文件相关型号

MC14521BDG,MC14521BDR2G,MC14521BFG

MC14521BD 产品属性

  • 48

  • 集成电路 (IC)

  • 逻辑 -计数器，除法器

  • 4000B

  • 除以 2

  • -

  • 1

  • 24

  • -

  • -

  • 12MHz

  • 负边沿

  • 3 V ~ 18 V

  • -55°C ~ 125°C

  • 表面贴装

  • 16-SOIC（0.154"，3.90mm 宽）

  • 16-SOIC

  • 管件

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