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74LV273PWDH

Octal D-type flip-flop with reset; positive-edge trigger

Philips Electronics 

Philips Semiconductors

Octal D-type flip-flop with reset; positive edge-trigger

Product specification

74LV273

FEATURES

• Wide operating voltage: 1.0 to 5.5V

• Optimized for Low Voltage applications: 1.0 to 3.6V

• Accepts TTL input levels between VCC = 2.7V and VCC = 3.6V

• Typical VOLP (output ground bounce) t 0.8V @ VCC = 3.3V,

Tamb = 25°C

• Typical VOHV (output VOH undershoot) u 2V @ VCC = 3.3V,

Tamb = 25°C

• Ideal buffer for MOS microprocessor or memory

• Common clock and master reset

• Output capability: standard

• ICC category: MSI

DESCRIPTION

The 74LV273 is a low-voltage Si-gate CMOS device and is pin and

function compatible with the 74HC/HCT273.

The 74LV273 has eight edge-triggered , D-type flip-flops with

individual D inputs and Q outputs. The common clock (CP) and

master reset (MR) inputs load and reset (clear) all flip-flops

simultaneously. The state of each D input, one set-up time before

the LOW-to-HIGH clock transition, is transferred to the

corresponding output (Qn) of the flip-flop.

All outputs will be forced LOW independently of clock or data inputs

by a LOW voltage level on the MR input.

The device is useful for applications where the true output only is

required and the clock and master reset are common to all storage

elements.

QUICK REFERENCE DATA

GND = 0V; Tamb = 25°C; tr =tf v2.5 ns

SYMBOL

PARAMETER

CONDITIONS

tPHL/tPLH

Propagation delay

CP to Qn;

MR to Qn

CL = 15pF

VCC = 3.3V

fmax

Maximum clock frequency

CI

Input capacitance

CPD

Power dissipation capacitance per flip-flop Notes 1 and 2

NOTES:

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

PD = CPD VCC2 x fi )S (CL VCC2 fo) where:

fi = input frequency in MHz; CL = output load capacitance in pF;

fo = output frequency in MHz; VCC = supply voltage in V;

S (CL VCC2 fo) = sum of the outputs.

2. The condition is VI = GND to VCC

TYPICAL

12

13

110

3.5

20

ORDERING INFORMATION

PACKAGES

20-Pin Plastic DIL

20-Pin Plastic SO

20-Pin Plastic SSOP Type II

20-Pin Plastic TSSOP

TEMPERATURE RANGE OUTSIDE NORTH AMERICA

–40°C to +125°C

74LV273 N

–40°C to +125°C

74LV273 D

–40°C to +125°C

74LV273 DB

–40°C to +125°C

74LV273 PW

NORTH AMERICA

74LV273 N

74LV273 D

74LV273 DB

74LV273PW DH

UNIT

ns

MHz

pF

pF

PKG. DWG. #

SOT146-1

SOT163-1

SOT339-1

SOT360-1

1998 May 29

2

853–1965 19466

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