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M74HCT162 Datasheet(PDF) 1 Page - STMicroelectronics

Part # M74HCT162
Description  SYNCHRONOUS PRESETTABLE 4-BIT COUNTER
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

M74HCT162 Datasheet(HTML) 1 Page - STMicroelectronics

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M54/74HCT160/161
M54/74HCT162/163
October 1993
SYNCHRONOUS PRESETTABLE 4-BIT COUNTER
B1R
(Plastic Package)
ORDER CODES :
M54HCTXXXF1R
M74HCTXXXM1R
M74HCTXXXB1R
M74HCTXXXC1R
F1R
(Ceramic Package)
M1R
(Micro Package)
C1R
(Chip Carrier)
PIN CONNECTIONS (top view)
NC =
No Inter-
nal Con-
DESCRIPTION
.
HIGH SPEED
fMAX = 50 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
.
SYMMETRICAL OUTPUT IMPEDANCE
IOH =IOL = 4 mA (MIN.)
.
COMPATIBLE WITH TTL OUTPUTS
VIH = 2V (MIN.); VIL = 0.8V (MAX.)
.
PIN AND FUNCTION COMPATIBLE
WITH 54/74LS160
∼ 163
M54/74HCT160 Decade, Asynchronous Clear
M54/74HCT161 Binary, Asynchronous Clear
M54/74HCT162 Decade, Synchronous Clear
M54/74HCT163 Binary, Synchronous Clear
The M54/74HCT160, 161, 162 and 163 are high
speed CMOS SYNCHRONOUS PRESETTABLE
COUNTERS fabricated with silicon gate C
2MOS
technology. They have the same high speed oper-
ation similar to equivalent LSTTL while maintaining
the CMOS low power dissipation.
The M54/74HCT160/162 are BCD Decade counter-
s and the M54/74HCT161/163 are 4 bit binary
counters. 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
M54/74HCT162/163 is synchronous to CLOCK,
while the M54/74HCT160/161 counters are cleared
asynchronously. Two enable inputs (TE and PE)
and CARRY output are provided to enable easy cas-
cading of counters, which facilities easy implemen-
tation of N-bit counters without using external gates.
This integrated circuit has input and output charac-
teristics that are fully compatible with 54/74 LSTTL
logic families. M54/74HCT devices are designed to
directly interface HSC
2MOS systems with TTL and
NMOS components. They are also plug in replace-
ments for LSTTL devices giving a reduction of
power consumption. All inputs are equipped with
1/16


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