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74HC160 Datasheet Preview

74HC160 Datasheet

Presettable synchronous BCD decade counter

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74HC160
Presettable synchronous BCD decade counter;
asynchronous reset
Rev. 4 — 27 March 2019
Product data sheet
1. General description
The 74HC160 is a synchronous presettable decade counter with an internal look-ahead carry.
Synchronous operation is provided by having all flip-flops clocked simultaneously on the positive-
going edge of the clock (CP). The outputs (Q0 to Q3) of the counters may be preset HIGH or LOW.
A LOW at the parallel enable input (PE) disables the counting action and causes the data at the
data inputs (D0 to D3) to be loaded into the counter on the positive-going edge of the clock. Preset
takes place regardless of the levels at count enable inputs (CEP and CET). A LOW at the master
reset input (MR) sets Q0 to Q3 LOW regardless of the levels at input pins CP, PE, CET and CEP
(thus providing an asynchronous clear function). The look-ahead carry simplifies serial cascading
of the counters. Both CEP and CET must be HIGH to count. The CET input is fed forward to enable
the terminal count output (TC). The TC output thus enabled will produce a HIGH output pulse of a
duration approximately equal to a HIGH output of Q0. This pulse can be used to enable the next
cascaded stage. The maximum clock frequency for the cascaded counters is determined by the CP
to TC propagation delay and CEP to CP set-up time, according to the following formula:
Inputs include clamp diodes. This enables the use of current limiting resistors to interface inputs to
voltages in excess of VCC.
2. Features and benefits
Complies with JEDEC standard no. 7A
CMOS input levels
Synchronous counting and loading
2 count enable inputs for n-bit cascading
Asynchronous reset
Positive-edge triggered clock
ESD protection:
HBM JESD22-A114F exceeds 2000 V
MM JESD22-A115-A exceeds 200 V
Specified from -40 °C to +85 °C and -40 °C to +125 °C
3. Ordering information
Table 1. Ordering information
Type number Package
Temperature range
74HC160D -40 °C to +125 °C
Name
SO16
Description
Version
plastic small outline package; 16 leads; body width 3.9 mm SOT109-1




nexperia

74HC160 Datasheet Preview

74HC160 Datasheet

Presettable synchronous BCD decade counter

No Preview Available !

Nexperia
74HC160
Presettable synchronous BCD decade counter; asynchronous reset
4. Functional diagram
3456
D0 D1 D2 D3
9 PE
PARALLEL
LOAD CIRCUITRY
10 CET
7 CEP
2 CP
1 MR
D
INH
CP
RD
DECADE
COUNTER
Q0 Q1 Q2
14 13 12
Q3
11
Fig. 1. Functional diagram
Fig. 3. IEC logic symbol
93456
TC 15
PE D0 D1 D2 D3
7 CEP
10 CET
2 CP
TC 15
1 MR
Q0 Q1 Q2 Q3
aaa-024737
14 13 12 11
aaa-012184
Fig. 2. Logic symbol
1
CTRDIV10
R
9 M1
7 G3
10 G4
2 C2/1,3,4+
3 1,2D
4
5
6
14
13
12
11
4CT = 9 15
aaa-024738
74HC160
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 4 — 27 March 2019
© Nexperia B.V. 2019. All rights reserved
2 / 15


Part Number 74HC160
Description Presettable synchronous BCD decade counter
Maker nexperia
Total Page 15 Pages
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