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SN74HC161N 数据表(PDF) 1 Page - Texas Instruments

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部件名 SN74HC161N
功能描述  4-BIT SYNCHRONOUS BINARY COUNTERS
Download  24 Pages
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制造商  TI [Texas Instruments]
网页  http://www.ti.com
标志 TI - Texas Instruments

SN74HC161N 数据表(HTML) 1 Page - Texas Instruments

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SN54HC161, SN74HC161
4BIT SYNCHRONOUS BINARY COUNTERS
SCLS297D − JANUARY 1996 − REVISED SEPTEMBER 2003
1
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
D Wide Operating Voltage Range of 2 V to 6 V
D Outputs Can Drive Up To 10 LSTTL Loads
D Low Power Consumption, 80-µA Max ICC
D Typical tpd = 14 ns
D ±4-mA Output Drive at 5 V
D Low Input Current of 1 µA Max
D Internal Look-Ahead for Fast Counting
D Carry Output for n-Bit Cascading
D Synchronous Counting
D Synchronously Programmable
SN54HC161 ...J OR W PACKAGE
SN74HC161 . . . D, N, NS, OR PW PACKAGE
(TOP VIEW)
32
1 20 19
910 11 12 13
4
5
6
7
8
18
17
16
15
14
QA
QB
NC
QC
QD
A
B
NC
C
D
SN54HC161 . . . FK PACKAGE
(TOP VIEW)
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
CLR
CLK
A
B
C
D
ENP
GND
VCC
RCO
QA
QB
QC
QD
ENT
LOAD
NC − No internal connection
description/ordering information
These synchronous, presettable counters feature an internal carry look-ahead for application in high-speed
counting designs. The ’HC161 devices are 4-bit binary counters. Synchronous operation is provided by having
all flip-flops clocked simultaneously so that the outputs change coincident with each other when so instructed
by the count-enable (ENP, ENT) inputs and internal gating. This mode of operation eliminates the output
counting spikes that are normally associated with synchronous (ripple-clock) counters. A buffered clock (CLK)
input triggers the four flip-flops on the rising (positive-going) edge of the clock waveform.
ORDERING INFORMATION
TA
PACKAGE†
ORDERABLE
PART NUMBER
TOP-SIDE
MARKING
PDIP − N
Tube of 25
SN74HC161N
SN74HC161N
Tube of 40
SN74HC161D
SOIC − D
Reel of 2500
SN74HC161DR
HC161
−40
°C to 85°C
SOIC − D
Reel of 250
SN74HC161DT
HC161
−40
°C to 85°C
SOP − NS
Reel of 2000
SN74HC161NSR
HC161
Tube of 90
SN74HC161PW
TSSOP − PW
Reel of 2000
SN74HC161PWR
HC161
TSSOP − PW
Reel of 250
SN74HC161PWT
HC161
CDIP − J
Tube of 25
SNJ54HC161J
SNJ54HC161J
−55
°C to 125°C
CFP − W
Tube of 150
SNJ54HC161W
SNJ54HC161W
−55 C to 125 C
LCCC − FK
Tube of 55
SNJ54HC161FK
SNJ54HC161FK
† Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are
available at www.ti.com/sc/package.
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
Copyright
 2003, Texas Instruments Incorporated
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
On products compliant to MILPRF38535, all parameters are tested
unless otherwise noted. On all other products, production
processing does not necessarily include testing of all parameters.


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