Datasheet

 
   
SCLS298D − JANUARY 1996 − REVISED − OCTOBER 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 I
CC
D Typical t
pd
= 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
description/ordering information
These synchronous, presettable counters feature
an internal carry look-ahead for application in
high-speed counting designs. The ’HC163
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
instructed by the count-enable (ENP, ENT) inputs
and internal gating. This mode of operation
eliminates the output counting spikes 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
T
A
PACKAGE
ORDERABLE
PART NUMBER
TOP-SIDE
MARKING
PDIP − N Tube of 25 SN74HC163N SN74HC163N
Tube of 40 SN74HC163D
SOIC − D
Reel of 2500 SN74HC163DR
HC163
SOIC − D
Reel of 250 SN74HC163DT
HC163
−40°C to 85°C
SOP − NS Reel of 2000 SN74HC163NSR HC163
−40 C to 85 C
SSOP − DB Reel of 2000 SN74HC163DBR HC163
Tube of 90 SN74HC163PW
TSSOP − PW
Reel of 2000 SN74HC163PWR
HC163
TSSOP − PW
Reel of 250 SN74HC163PWT
HC163
CDIP − J Tube of 25 SNJ54HC163J SNJ54HC163J
−55°C to 125°C
CFP − W Tube of 150 SNJ54HC163W SNJ54HC163W
−55 C to 125 C
LCCC − FK Tube of 55 SNJ54HC163FK SNJ54HC163FK
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 o
f
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
SN54HC163 ...J OR W PACKAGE
SN74HC163 . . . D, DB, N, NS, OR PW PACKAGE
(TOP VIEW)
3 2 1 20 19
910111213
4
5
6
7
8
18
17
16
15
14
Q
A
Q
B
NC
Q
C
Q
D
A
B
NC
C
D
SN54HC163 . . . FK PACKAGE
(TOP VIEW)
CLK
CLR
NC
LOAD
ENT
RCO
ENP
GND
NC
V
CC
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
CLR
CLK
A
B
C
D
ENP
GND
V
CC
RCO
Q
A
Q
B
Q
C
Q
D
ENT
LOAD
NC − No internal connection
Copyright 2003, Texas Instruments Incorporated
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