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MC74AC161 Schematic ( PDF Datasheet ) - ON Semiconductor

Teilenummer MC74AC161
Beschreibung Synchronous Presettable Binary Counter
Hersteller ON Semiconductor
Logo ON Semiconductor Logo 




Gesamt 12 Seiten
MC74AC161 Datasheet, Funktion
MC74AC161, MC74ACT161,
MC74AC163, MC74ACT163
Synchronous Presettable
Binary Counter
The MC74AC161/74ACT161 and MC74AC163/74ACT163 are
high−speed synchronous modulo−16 binary counters. They are
synchronously presettable for application in programmable dividers
and have two types of Count Enable inputs plus a Terminal Count
output for versatility in forming synchronous multistage counters.
The MC74AC161/74ACT161 has an asynchronous Master Reset
input that overrides all other inputs and forces the outputs LOW. The
MC74AC163/74ACT163 has a Synchronous Reset input that
overrides counting and parallel loading and allows the outputs to be
simultaneously reset on the rising edge of the clock.
Features
Synchronous Counting and Loading
High−Speed Synchronous Expansion
Typical Count Rate of 125 MHz
Outputs Source/Sink 24 mA
ACT161 and ACT163 Have TTL Compatible Inputs
These are Pb−Free Devices
VCC TC Q0 Q1 Q2 Q3 CET PE
16 15 14 13 12 11 10 9
www.onsemi.com
16
1
xxx
y
A
WL
Y
WW
G
MARKING
DIAGRAM
16
SOIC−16
D SUFFIX
CASE 751B
1
xxx16yG
AWLYWW
= AC or ACT
= 1 or 3
= Assembly Location
= Wafer Lot
= Year
= Work Week
= Pb−Free Package
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 11 of this data sheet.
12345678
*R CP P0 P1 P2 P3 CEP GND
Figure 1. Pinout: 16−Lead Packages Conductors
(Top View)
PIN ASSIGNMENT
PIN FUNCTION
CEP
Count Enable Parallel Input
CET
Count Enable Trickle Input
CP Clock Pulse Input
MR (161) Asynchronous Master Reset Input
SR (163) Synchronous Reset Input
P0−P3
PE
Parallel Data Inputs
Parallel Enable Input
Q0−Q3
TC
Flip−Flop Outputs
Terminal Count Output
© Semiconductor Components Industries, LLC, 2015
January, 2015 − Rev. 8
1
Publication Order Number:
MC74AC161/D






MC74AC161 Datasheet, Funktion
MC74AC161, MC74ACT161, MC74AC163, MC74ACT163
AC OPERATING REQUIREMENTS
Symbol
Parameter
Setup Time, HIGH or LOW
ts Pn to CP
Hold Time, HIGH or LOW
th Pn to CP
Setup Time, HIGH or LOW
ts PE to CP
Hold Time, HIGH or LOW
th PE to CP
Setup Time, HIGH or LOW
ts CEP or CET to CP
Hold Time, HIGH or LOW
th CEP or CET to CP
Clock Pulse Width (Load)
tw HIGH or LOW
Clock Pulse Width (Count)
tw HIGH or LOW
tw MR Pulse Width, LOW
Recovery TIme
trec MR to CP
*Voltage Range 3.3 V is 3.3 V ±0.3 V.
*Voltage Range 5.0 V is 5.0 V ±0.5 V.
74AC161
74AC161
VCC*
(V)
TA = +25°C
CL = 50 pF
TA = −40°C
to +85°C
CL = 50 pF
Typ Guaranteed Minimum
Unit
Fig.
No.
3.3 6.0
5.0 3.5
13.5
8.5
16.0
10.5 ns 3−9
3.3 −7.0
5.0 −4.0
−1.0
0
−0.5
0 ns 3−9
3.3 6.5
5.0 4.0
11.5
7.5
14.0
8.5 ns 3−9
3.3 −6.0
5.0 −3.5
0
0.5
0
1.0 ns 3−9
3.3 3.0
5.0 2.0
6.0
4.5
7.0
5.0 ns 3−9
3.3 −3.5
5.0 −2.0
0
0
0
0.5 ns 3−9
3.3 2.0
5.0 2.0
3.5
2.5
4.0
3.0 ns 3−6
3.3 2.0
5.0 2.0
4.0
3.0
4.5
3.5 ns 3−6
3.3 3.0
5.0 2.5
5.5
4.5
7.5
6.0 ns 3−6
3.3 −2.0
5.0 −1.0
−0.5
0
0
0.5 ns 3−9
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6

6 Page









MC74AC161 pdf, datenblatt
MC74AC161, MC74ACT161, MC74AC163, MC74ACT163
PACKAGE DIMENSIONS
−A−
16
1
SOIC−16
D SUFFIX
CASE 751B−05
ISSUE K
9
−B− P 8 PL
8 0.25 (0.010) M B S
−T− SEATING
PLANE
G
F
K R X 45_
C
D 16 PL
0.25 (0.010) M T B S A S
MJ
SOLDERING FOOTPRINT*
8X
6.40
16X 1.12
1 16
16X
0.58
NOTES:
1. DIMENSIONING AND TOLERANCING PER ANSI
Y14.5M, 1982.
2. CONTROLLING DIMENSION: MILLIMETER.
3. DIMENSIONS A AND B DO NOT INCLUDE MOLD
PROTRUSION.
4. MAXIMUM MOLD PROTRUSION 0.15 (0.006) PER SIDE.
5. DIMENSION D DOES NOT INCLUDE DAMBAR
PROTRUSION. ALLOWABLE DAMBAR PROTRUSION
SHALL BE 0.127 (0.005) TOTAL IN EXCESS OF THE D
DIMENSION AT MAXIMUM MATERIAL CONDITION.
MILLIMETERS
INCHES
DIM MIN MAX MIN MAX
A 9.80 10.00 0.386 0.393
B 3.80 4.00 0.150 0.157
C 1.35 1.75 0.054 0.068
D 0.35 0.49 0.014 0.019
F 0.40 1.25 0.016 0.049
G 1.27 BSC
0.050 BSC
J 0.19 0.25 0.008 0.009
K 0.10 0.25 0.004 0.009
M 0_ 7_ 0_ 7_
P 5.80 6.20 0.229 0.244
R 0.25 0.50 0.010 0.019
1.27
PITCH
89
DIMENSIONS: MILLIMETERS
*For additional information on our Pb−Free strategy and soldering
details, please download the ON Semiconductor Soldering and
Mounting Techniques Reference Manual, SOLDERRM/D.
ON Semiconductor and the are registered trademarks of Semiconductor Components Industries, LLC (SCILLC) or its subsidiaries in the United States and/or other countries.
SCILLC owns the rights to a number of patents, trademarks, copyrights, trade secrets, and other intellectual property. A listing of SCILLC’s product/patent coverage may be accessed
at www.onsemi.com/site/pdf/Patent−Marking.pdf. SCILLC reserves the right to make changes without further notice to any products herein. SCILLC makes no warranty, representation
or guarantee regarding the suitability of its products for any particular purpose, nor does SCILLC assume any liability arising out of the application or use of any product or circuit, and
specifically disclaims any and all liability, including without limitation special, consequential or incidental damages. “Typical” parameters which may be provided in SCILLC data sheets
and/or specifications can and do vary in different applications and actual performance may vary over time. All operating parameters, including “Typicals” must be validated for each
customer application by customer’s technical experts. SCILLC does not convey any license under its patent rights nor the rights of others. SCILLC products are not designed, intended,
or authorized for use as components in systems intended for surgical implant into the body, or other applications intended to support or sustain life, or for any other application in which
the failure of the SCILLC product could create a situation where personal injury or death may occur. Should Buyer purchase or use SCILLC products for any such unintended or
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expenses, and reasonable attorney fees arising out of, directly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized use, even if such claim
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