74LVC1G74 View Datasheet(PDF) - Philips Electronics

Part Name

Description

Manufacturer

74LVC1G74

Single D-type flip-flop with set and reset; positive edge trigger

Philips Electronics 

Philips Semiconductors

Single D-type flip-flop with set and

reset; positive edge trigger

Product specification

74LVC1G74

FEATURES

• Wide supply voltage range from 1.65 V to 5.5 V

• 5 V tolerant inputs for interfacing with 5 V logic

• High noise immunity

• Complies with JEDEC standard:

– JESD8-7 (1.65 V to 1.95 V)

– JESD8-5 (2.3 V to 2.7 V)

– JESD8B/JESD36 (2.7 V to 3.6 V).

• ±24 mA output drive (VCC = 3.0 V)

• ESD protection:

– HBM EIA/JESD22-A114-B exceeds 2000 V

– MM EIA/JESD22-A115-A exceeds 200 V.

• CMOS low power consumption

• Latch-up performance exceeds 250 mA

• Direct interface with TTL levels

• Inputs accept voltages up to 5 V

• Multiple package options

• Specified from −40 °C to +85 °C and −40 °C to +125 °C.

DESCRIPTION

The 74LVC1G74 is a high-performance, low-voltage,

Si-gate CMOS device, superior to most advanced CMOS

compatible TTL families.

The 74LVC1G74 is a single positive edge triggered D-type

flip-flop with individual data (D) inputs, clock (CP) inputs,

set (SD) and (RD) inputs, and complementary Q and Q

outputs.

This device is fully specified for partial power down

applications using Ioff. The Ioff circuitry disables the output,

preventing damaging backflow current through the device

when it is powered down.

The set and reset are asynchronous active LOW inputs

and operate independently of the clock input. Information

on the data input is transferred to the Q output on the

LOW-to-HIGH transition of the clock pulse. The D inputs

must be stable one set-up time prior to the LOW-to-HIGH

clock transition, for predictable operation.

Schmitt-trigger action at all inputs makes the circuit highly

tolerant to slower input rise and fall times.

QUICK REFERENCE DATA

GND = 0 V; Tamb = 25 °C; tr = tf ≤ 2.5 ns.

SYMBOL

tPHL/tPLH

fmax

CI

CPD

PARAMETER

propagation delay

CP to Q, Q

SD to Q, Q

RD to Q, Q

maximum clock frequency

input capacitance

power dissipation capacitance

CONDITIONS

CL = 50 pF; VCC = 3.3 V

CL = 50 pF; VCC = 3.3 V

CL = 50 pF; VCC = 3.3 V

CL = 50 pF; VCC = 3.3 V

VCC = 3.3 V; notes 1 and 2

Notes

1. CPD is used to determine the dynamic power dissipation (PD in µW).

PD = CPD × VCC2 × fi × N + Σ(CL × VCC2 × fo) where:

fi = input frequency in MHz;

fo = output frequency in MHz;

CL = output load capacitance in pF;

VCC = supply voltage in Volts;

N = number of inputs switching;

Σ(CL × VCC2 × fo) = sum of the outputs.

2. The condition is VI = GND to VCC.

TYPICAL

UNIT

3.5

ns

3.0

ns

3.0

ns

280

MHz

4.0

pF

15

pF

2005 Feb 01

2

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