74LVC169EVB NXP Semiconductors, 74LVC169EVB Datasheet

74LVC169EVB

Manufacturer Part Number

74LVC169EVB

Description

BOARD EVALUATION FOR 74LVC169

Manufacturer

NXP Semiconductors

Datasheets

1.74LVC169D112.pdf (22 pages)

2.74LVC169EVB.pdf (4 pages)

Specifications of 74LVC169EVB

Main Purpose

Logic, Binary Counter

Embedded

Utilized Ic / Part

74LVC169

Primary Attributes

1.2 V ~ 3.6 V Input Voltage

Secondary Attributes

Built-in look-ahead carry capability

Lead Free Status / RoHS Status

Lead free / RoHS Compliant

Other names

568-5082

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Demonstrate a binary counter for

high-speed counting applications

This compact demo board makes it easy to evaluate the 74LVC169, a binary counter with internal

look-ahead carry circuitry for cascading in high-speed counting applications.

Key features and benefits

} 5 V tolerant inputs for interfacing with 5 V logic and use in

} Wide supply voltage range: 1.2 to 3.6 V

} CMOS low power consumption for portable applications

} Direct interface with TTL levels

} Up/down counting

} Two count enable inputs for n-bit cascading

} Built-in look-ahead carry capability

} Presettable for programmable operation

} Multiple extremely small standard and leadless packages

} Wide operating temperature range (-40 to +125 °C), suitable

Applications

} Portable devices

} Industrial

} Automotive

3/5 V mixed voltage applications

for industrial and automotive applications

NXP 74LVC169

demo board

The 74LVC169 is a synchronous presettable 4-bit binary

counter which features an internal look-ahead carry circuitry

for cascading in high-speed counting applications.

Synchronous operation is provided by having all flip-flops

clocked simultaneously so that the outputs (pins Q0 to Q3)

change simultaneously with each other when instructed by the

count-enable (pins CEP and CET) inputs and internal gating.

This mode of operation eliminates the output counting spikes

that are normally associated with asynchronous (ripple clock)

counters. A buffered clock (pin CP) input triggers the four flip-

flops on the LOW-to-HIGH transition of the clock.

The counter is fully programmable; that is, the outputs may

be preset to any number between 0 and its maximum count

of 15. Presetting is synchronous with the clock and takes place

regardless of the levels of the count enable inputs. A LOW

level on the parallel enable (pin PE) input disables the counter

and causes the data at the Dn input to be loaded into the

counter on the next LOW-to-HIGH transition of the clock.

The direction of the counting is controlled by the up/down

(pin U/D) input. When pin U/D is HIGH, the counter counts up,

when LOW, it counts down.

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74LVC169EVB Summary of contents

Page 1

Demonstrate a binary counter for high-speed counting applications This compact demo board makes it easy to evaluate the 74LVC169, a binary counter with internal look-ahead carry circuitry for cascading in high-speed counting applications. Key features and benefits } 5 V ...

Page 2

The look-ahead carry circuitry is provided for cascading counters for n-bit synchronous applications without additional gating. Instrumental in accomplishing this function are two count-enable (pins CEP and CET) inputs and a terminal count (pin TC) output. Both count-enable (pins CEP ...

Page 3

Test results Figure 1 shows a main clock of 466 kHz in green at CP input and a divided-by-2 clock output of 233 kHz in purple at Q0 pin. By default PE pin is pulled down to ...

Page 4

Packages 74LVC169 is available in 16-pin SO, SSOP, TSSOP and leadless DQFN packages. Package suffix D SOT109-1 16-pin Width (mm) 6.0 Length (mm) 9.9 Pitch (mm) 1.27 Ordering information Part number Temp. range 74LVC169 -40 to 125 °C 74LVC169DB -40 ...

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