MC14522B Motorola, MC14522B Datasheet

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MC14522B

Manufacturer Part Number
MC14522B
Description
Presettable 4-Bit Down Counters
Manufacturer
Motorola
Datasheet

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MC14522BCP
Manufacturer:
MOT
Quantity:
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MC14522BCP
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Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î
Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î
Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î
MOTOROLA
SEMICONDUCTOR TECHNICAL DATA
Presettable 4-Bit Down Counters
constructed with MOS P–channel and N–channel enhancement mode
devices in a monolithic structure.
with a decoded “0” state output for divide–by–N applications. In single stage
applications the “0” output is applied to the Preset Enable input. The
Cascade Feedback input allows cascade divide–by–N operation with no
additional gates required. The Inhibit input allows disabling of the pulse
counting function. Inhibit may also be used as a negative edge clock.
ers, phase–locked loops, and other frequency division applications requiring
low power dissipation and/or high noise immunity.
* Maximum Ratings are those values beyond which damage to the device may occur.
†Temperature Derating:
X = Don’t Care
NOTES:
REV 3
1/94
MAXIMUM RATINGS*
V in , V out
Clock Reset
** Output “0” is high when reset is low, only if CF is high and count is 0000.
Symbol
MOTOROLA CMOS LOGIC DATA
I in , I out
* Output “0” is low when reset goes high only it PE and CF are low.
The MC14522B BCD counter and the MC14526B binary counter are
These devices are presettable, cascadable, synchronous down counters
These complementary MOS counters can be used in frequency synthesiz-
Motorola, Inc. 1995
V DD
Supply Voltage Range = 3.0 Vdc to 18 Vdc
Logic Edge–Clocked Design — Incremented on Positive Transition of
Clock or Negative Transition of Inhibit
Asynchronous Preset Enable
Capable of Driving Two Low–power TTL Loads or One Low–power
Schottky TTL Load Over the Rated Temperature Range
X
X
X
X
X
X
X
X
H
H
H
H
H
T stg
L
L
P D
T L
Plastic “P and D/DW” Packages: – 7.0 mW/ _ C From 65 _ C To 125 _ C
Ceramic “L” Packages: – 12 mW/ _ C From 100 _ C To 125 _ C
H
H
H
H
H
H
H
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
DC Supply Voltage
Input or Output Voltage (DC or Transient)
Input or Output Current (DC or Transient),
per Pin
Power Dissipation, per Package†
Storage Temperature
Lead Temperature (8–Second Soldering)
Inhibit
X
X
X
X
X
X
X
X
H
L
L
L
L
Inputs
(Voltages Referenced to V SS )
Enable
Preset
Parameter
H
H
X
X
X
H
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
FUNCTION TABLE
Feedback
Cascade
H
H
H
X
X
X
X
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
Output
“0”
H
H
H
H
H
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
– 0.5 to V DD + 0.5
– 0.5 to + 18.0
Asynchronous reset*
Asynchronous reset*
Asynchronous reset
Asynchronous reset
Asynchronous reset
Asynchronous reset
Asynchronous reset
Asynchronous preset
Decrement inhibited
Decrement inhibited
Decrement inhibited
No change** (inactive edge)
No change** (inactive edge)
No change** (inactive edge)
No change** (inactive edge)
Decrement**
Decrement**
Decrement**
Decrement**
Decrement**
Decrement**
Decrement**
– 65 to + 150
Value
500
260
10
Resulting
Resulting
Function
Function
Unit
mW
mA
_ C
_ C
V
V
guard against damage due to high static
voltages or electric fields. However, pre-
cautions must be taken to avoid applications of
any voltage higher than maximum rated volt-
ages to this high–impedance circuit. For proper
operation, V in and V out should be constrained
to the range V SS
appropriate logic voltage level (e.g., either V SS
or V DD ). Unused outputs must be left open.
This device contains protection circuitry to
Unused inputs must always be tied to an
T A = – 55 to 125 C for all packages.
INHIBIT
CLOCK
ORDERING INFORMATION
MC14XXXBCP
MC14XXXBCL
MC14XXXBDW
MC14522B
MC14526B
V SS
Q3
PE
Q0
P3
P0
PIN ASSIGNMENT
1
2
3
4
5
6
7
8
v
MC14522B MC14526B
(V in or V out )
16
15
14
13
12
10
11
9
DW SUFFIX
CASE 751G
CERAMIC
CASE 620
CASE 648
L SUFFIX
P SUFFIX
Q2
V DD
P2
CF
“0”
P1
RESET
Q1
PLASTIC
Plastic
Ceramic
SOIC
SOIC
v
V DD .
1

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MC14522B Summary of contents

Page 1

... MOTOROLA SEMICONDUCTOR TECHNICAL DATA Presettable 4-Bit Down Counters The MC14522B BCD counter and the MC14526B binary counter are constructed with MOS P–channel and N–channel enhancement mode devices in a monolithic structure. These devices are presettable, cascadable, synchronous down counters with a decoded “0” state output for divide–by–N applications. In single stage applications the “ ...

Page 2

... The formulas given are for the typical characteristics only †To calculate total supply current at loads other than 50 pF (50 pF – 50) Vfk where (per package pF – volts kHz is input frequency, and k = 0.001. MC14522B MC14526B 2 (Voltages Referenced – ...

Page 3

... MC14522B MC14526B 3 ...

Page 4

... RESET C L INHIBIT C L “0” CLOCK PULSE GENERATOR 20 ns 90% CLOCK 50% 10% VARIABLE 50% DUTY CYCLE WIDTH Figure 3. Power Dissipation MC14522B MC14526B RESET Q3 INHIBIT CLOCK “ ...

Page 5

... V SS CLOCK ANY P 50% GND t PLH PRESET ENABLE 1/f max t PLH t PHL t TLH t THL Figure 50 PHL 50% t rem Figure 8. VALID 50 Figure 10. MC14522B MC14526B 5 ...

Page 6

... MC14522B MC14526B 6 PIN DESCRIPTIONS other than all zeroes, the “0” output is valid after the rising edge of Preset Enable (when Cascade Feedback is high). See the Function Table. Cascade Feedback (Pin 13) — If the Cascade Feedback input is high, a high level is generated at the “0” output when the count is all zeroes. If Cascade Feedback is low, the “ ...

Page 7

... MC14522B LOGIC DIAGRAM (BCD Down Counter INHIBIT CLOCK 6 10 RESET MC14526B LOGIC DIAGRAM (Binary Down Counter INHIBIT CLOCK 6 10 RESET MOTOROLA CMOS LOGIC DATA P1 Q1 ...

Page 8

... Divide–By–N, Single Stage Figure 11 shows a single stage divide–by–N application. The MC14522B (BCD version) can accept a number greater than 9 and count down in binary fashion. Hence, the BCD and binary single stage divide–by–N counters (as shown in Figure 11) function the same. ...

Page 9

... DIMENSION B DOES NOT INCLUDE MOLD FLASH. 5. ROUNDED CORNERS OPTIONAL. INCHES MILLIMETERS DIM MIN MAX MIN MAX A 0.740 0.770 18.80 19.55 B 0.250 0.270 6.35 6.85 C 0.145 0.175 3.69 4.44 D 0.015 0.021 0.39 0.53 F 0.040 0.70 1.02 1.77 G 0.100 BSC 2.54 BSC H 0.050 BSC 1.27 BSC J 0.008 0.015 0.21 0.38 K 0.110 0.130 2.80 3.30 L 0.295 0.305 7.50 7. 0.020 0.040 0.51 1.01 MC14522B MC14526B 9 ...

Page 10

... How to reach us: USA/EUROPE/Locations Not Listed: Motorola Literature Distribution; P.O. Box 20912; Phoenix, Arizona 85036. 1–800–441–2447 or 602–303–5454 MFAX: RMFAX0@email.sps.mot.com – TOUCHTONE 602–244–6609 INTERNET: http://Design–NET.com MC14522B MC14526B 10 OUTLINE DIMENSIONS DW SUFFIX PLASTIC SOIC PACKAGE CASE 751G–02 ...

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