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74160 Datasheet Download - SGS-THOMSON

Номер произв 74160
Описание SYNCHRONOUS PRESETTABLE 4-BIT COUNTER
Производители SGS-THOMSON
логотип SGS-THOMSON логотип 

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74160 Даташит, Описание, Даташиты
M54/74HC160/161
M54/74HC162/163
SYNCHRONOUS PRESETTABLE 4-BIT COUNTER
. HIGH SPEED
fMAX = 63 MHz (TYP.) AT VCC = 5 V
. LOW POWER DISSIPATION
ICC = 4 µA (MAX.) AT 25 °C
. OUTPUT DRIVE CAPABILITY
10 LSTTL LOADS
. BALANCED PROPAGATION DELAYS
tPLH = tPHL
. HIGH NOISE IMMUNITY
VNIH = VNIL = 28 % VCC (MIN.)
. WIDE OPERATING VOLTAGE RANGE
VCC (OPR) = 2 V TO 6 V
. PIN AND FUNCTION COMPATIBLE
WITH 54/74LS160 163
B1R
(Plastic Package)
F1R
(Ceramic Package)
M 1R
(Micro Package)
C1R
(Chip Carrier)
DESCRIPTION
ORDER CODES :
M54HCXXXF1R M74HCXXXM1R
M74HCXXXB1R M74HCXXXC1R
M54/74HC160 Decade, Asynchronous Clear
M54/74HC161 Binary, Asynchronous Clear
M54/74HC162 Decade, Synchronous Clear
M54/74HC163 Binary, Synchronous Clear
PIN CONNECTIONS (top view)
The M54/74HC160, 161, 162 and 163 are high
speed CMOS SYNCHRONOUS PRESETTABLE
COUNTERS fabricated with silicon gate C2MOS
technology.
They have the same the high speed operation simi-
lar to equivalent LSTTL while maintaining the
CMOS low power dissipation.
The M54/74HC160/162 are BCD Decade counters
and the M54/74HC161/163 are 4 bit binary counter-
s.
The CLOCK input is active on the rising edge. Both
LOAD and CLEAR inputs are active Low.
Presetting of all four IC’s is synchronous on the ris-
ing edge of the CLOCK.
The function on the M54/74HC162/163 is syn-
chronous to CLOCK, while the M54/74HC160/161
counters are cleared asynchronously.
Two enable inputs (TE and PE) and CARRY output
are provided to enable easy cascading of counters,
which facilities easy implementation of N-bit
counters without using external gates.
All inputs are equipped with protection circuits
against static discharge and transient excess volt-
age.
NC =
No Inter-
nal Con-
April 1993
1/16







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74160 Даташит, Описание, Даташиты
M54/M74HC160/161/162/163
INPUT AND OUTPUT EQUIVALENT CIRCUIT
IEC LOGIC SYMBOL (HC160)
PIN DESCRIPTION
PIN No
1
2
3, 4, 5, 6
7
10
9
14, 13, 12,
11
15
8
16
SYMBOL
CLEAR
CLOCK
A, B, C, D
ENABLE P
ENABLET
LOAD
QA to QD
CARRY
OUTPUT
GND
VCC
NAME AND FUNCTION
Asynchronous Master
reset
Clock Input (LOW to
HIGH, Edge-triggered)
Data Inputs
Count Enable Input
Count Enable Carry Input
Parallel Enable Input
Flip Flop Outputs
Terminal Count Output
Ground (0V)
Positive Supply Voltage
IEC LOGIC SYMBOL (HC161)
IEC LOGIC SYMBOL (HC162)
IEC LOGIC SYMBOL (HC163)
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74160 Даташит, Описание, Даташиты
M54/M74HC160/161/162/163
TRUTH TABLE
M54/74HC160/161
INPUTS
M54/74HC162/163
INPUTS
OUTPUTS
CLR LD PE TE CK CLR LD PE TE CK QA QB QC QD
L XXX X L XX X
LLLL
HL XX
HLXX
ABCD
HHX L
HHX L
NO CHANGE
HH LX
HHL X
NO CHANGE
HHHH
HHHH
COUNT UP
H
Note:
XXX
XXXX
X : Don’t Care
A, B, C, D : Logi level of data inputs
Carry
: CARRY = TE QA QB QC QD ............ (M54/74HC160/162)
: CARRY = TE QA QB QC QD ............ (M54/74HC161/163)
NO CHANGE
FUNCTION
RESET TO ”0”
PRESET DATA
NO COUNT
NO COUNT
COUNT
NO COUNT
TIMING CHART (HC160/162 : decade counter)
3/16










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