MICREL SY10EL31, SY100EL31 Datasheet

DESCRIPTIONFEATURES

D FLIP-FLOP
WITH SET AND RESET

PIN NAMES

Pin Function

D Data Inputs
Q Data Outputs
S Set
R Reset
CLK Clock Input

PIN CONFIGURATION/BLOCK DIAGRAM

Rev.: E Amendment: /0
Issue Date: August, 1998

SY10EL31

SY100EL31

■ 475ps propagation delay

■ 2.8GHz toggle frequency

■ Internal 75KΩ input pull-down resistors

■ Available in 8-pin SOIC package

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.

TRUTH TABLE

(1)

D S R CLK Q

LL L Z L
HL L Z H
XH L X H
XL H X L
X H H X Undef

NOTE:

1. Z = LOW-to-HIGH transition.

SOIC

TOP VIEW

1

2

3

45

6

7

8

SV

CC

Q

V

EE

D

R

CLK

Q

S

D

R

Flip-Flop

1

2

SY10EL31

SY100EL31

Micrel

TA = –40°CTA = 0°CTA = +25°CTA = +85°C

Symbol Parameter Min. Typ. Max. Min. Typ. Max. Min. Typ. Max. Min. Typ. Max. Unit

f

MAX Maximum Toggle 20 2.5 — 2.2 2.8 — 2.2 2.8 — 2.2 2.8 — GHz

Frequency

t

PLH Propagation Delay to ps

tPHL Output CLK 315 465 630 365 465 580 375 475 590 430 530 645

S, R 295 455 630 345 455 580 355 465 590 400 510 645
tS Set-up Time 150 0 — 150 0 — 150 0 — 150 0 — ps
tH Hold Time 250 100 — 250 100 — 250 100 — 250 100 — ps
tRR Set/Reset Recovery 400 200 — 400 200 — 400 200 — 400 200 — ps
t

PW Minimum Pulse Width 400 — — 400 — — 400 — — 400 — — ps

CLK, Set, Reset

t

r Output Rise/Fall Times Q 100 225 350 100 225 350 100 225 350 100 225 350 ps

tf (20% to 80%)

AC ELECTRICAL CHARACTERISTICS

VEE = VEE (Min.) to VEE (Max.); VCC = GND

DC ELECTRICAL CHARACTERISTICS

TA = –40°CTA = 0°CTA = +25°CTA = +85°C

Symbol Parameter Min. Typ. Max. Min. Typ. Max. Min. Typ. Max. Min. Typ. Max. Unit

I

EE Power Supply Current mA

10EL — 27 32 18 27 32 18 27 32 18 27 32

100EL — 27 32 18 27 32 18 27 32 21 31 37

V

EE Power Supply Voltage V

10EL –4.75 –5.2 –5.5 –4.75 –5.2 –5.5 –4.75 –5.2 –5.5 –4.75 –5.2 –5.5

100EL –4.20 –4.5 –5.5 –4.20 –4.5 –5.5 –4.20 –4.5 –5.5 –4.20 –4.5 –5.5

I

IH Input HIGH Current — — 150 — — 150 — — 150 — — 150 µA

VEE = VEE (Min.) to VEE (Max.); VCC = GND

PRODUCT ORDERING CODE

Ordering Package Operating

Code Type Range

SY10EL31ZC Z8-1 Commercial
SY10EL31ZCTR Z8-1 Commercial
SY100EL31ZC Z8-1 Commercial
SY100EL31ZCTR Z8-1 Commercial