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MSB51

RED LED LAMPS

Micro Electronics 

Micrel, Inc.

D FLIP-FLOP

WITH SET AND RESET

SY10EL31

SY1S0YE10L03E1L31

SY100EL31

FEATURES

s 475ps propagation delay

s 2.8GHz toggle frequency

s Internal 75KΩ input pull-down resistors

s Available in 8-pin SOIC package

DESCRIPTION

The SY10/100EL31 are D flip-flops with set and reset.

The devices are functionally equivalent to the E131

devices, with higher performance capabilities. With

propagation delays and output transition times

significantly faster than the E131, the EL31 is ideally

suited for those applications which require the ultimate

in AC performance.

Both the set and reset inputs are asynchronous, level

triggered signals. Data enters the master portion of the

flip-flop when the clock is LOW and is transferred to the

slave, and thus the outputs, upon a positive transition of

the clock.

PIN NAMES

Pin

D

Q

S

R

CLK

Function

Data Inputs

Data Outputs

Set

Reset

Clock Input

TRUTH TABLE(1)

D

S

R

L

L

L

H

L

L

X

H

L

X

L

H

X

H

H

NOTE:

1. Z = LOW-to-HIGH transition.

CLK

Z

Z

X

X

X

Q

L

H

H

L

Undef

M9999-120705

hbwhelp@micrel.com or (408) 955-1690

1

Rev.: G Amendment: /0

Issue Date: December 2005

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