MICREL SY10E256, SY100E256 Datasheet

3-BIT 4:1
MUX-LATCH

SY10E256

SY100E256

FEATURES

■ 950ps max. data to output

■ Extended 100E V

EE range of –4.2V to –5.5V

■ 850ps max. latch enable to output

■ Separate select controls

■ Differential outputs

■ Fully compatible with industry standard 10KH,

100K ECL levels

■ Internal 75KΩ input pulldown resistors

■ Fully compatible with Motorola MC10E/100E256

■ Available in 28-pin PLCC package

BLOCK DIAGRAM

D

0a

D

SEL

0b

D

0c

D

0d

D

1a

D

1b

D

1c

D

1d

D

2a

D

2b

D

2c

D

2d

1A

D
E

N

R

D
E

N

R

D
E

N

R

Q
Q

Q
Q

Q
Q

DESCRIPTION

The SY10/100E256 offer three 4:1 multiplexers followed
by latches with differential outputs designed for use in new,
high-performance ECL systems. Separate Select controls
are provided for the leading 2:1 mux pairs (see block
diagram).

When the Latch Enable (LEN) is at a logic LOW, the latch
is transparent and output data is controlled by the multiplexer
select controls. A logic HIGH on LEN latches the outputs.
The Master Reset (MR) overrides all other controls to set
the Q outputs LOW.

PIN CONFIGURATION

2d

1b

0

0

1A

SEL
SEL

1B

SEL

1

1

V

EE

LEN

2

MR
D

1c

2

2

D

25

24 23 22 21 20 19
26
27
28

1
2
3
4

5 6 7 8 9 10 11

1d

D

2c

1a

D

D

D

TOP VIEW

PLCC

J28-1

0c

0a

0b

D

D

D

2b

CCO

2a

V

D

D

18

Q

2

17

Q

2

16

V

CC

15

Q

1

14

Q

1

13

V

CCO

12

Q

0

0

0d

Q

D

CCO

V

SEL

SEL

LEN

1B

MR

2

PIN NAMES

Pin Function

D0x–D2x Parallel Data Inputs
SEL1A, SEL1B First-stage Select Inputs
SEL2 Second-stage Select Input
LEN Latch Enable
MR Master Reset
Q0, Q0–Q2, Q2 Data Outputs

CCO VCC to Output

V

Rev.: C Amendment: /1

1

Issue Date: February, 1998

Micrel

SY100E256

TRUTH TABLE

Pin State Operation

SEL2 H Output c/d Data
SEL1A H Input d Data
SEL

1B H Input b Data

DC ELECTRICAL CHARACTERISTICS

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

TA = 0°CTA = +25°CTA = +85°C

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

IIH Input HIGH Current ——150 ——150 ——150 µA —

EE Power Supply Current mA —

I

10E — 69 83 — 69 83 — 69 83

100E — 69 83 — 69 83 — 79 96

AC ELECTRICAL CHARACTERISTICS

SY10E256

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

TA = 0°CTA = +25°CTA = +85°C

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

PLH Propagation Delay to Output ps —

t
tPHL D 400 600 900 400 600 900 400 600 900

SEL1 550 775 1050 550 775 1050 550 775 1050
SEL2 450 650 900 450 650 900 450 650 900
LEN 350 500 800 350 500 800 350 500 800
MR 350 600 825 350 600 825 350 600 825

S Set-up Time ps —

t

D 400 275 — 400 275 — 400 275 —
SEL1 600 300 — 600 300 — 600 300 —
SEL2 500 250 — 500 250 — 500 250 —

H Hold Time ps —

t

D 300 –275 — 300 –275 — 300 –275 —
SEL1 100 –300 — 100 –300 — 100 –300 —

SEL2 200 –250 — 200 –250 — 100 –250 —
tRR Reset Recovery Time 700 600 — 700 600 — 700 600 — ps —
tPW Minimum Pulse Width, MR 400 ——400 ——400 ——ps —
tskew Within-Device Skew — 50 ——50 ——50 — ps 1

r Rise/Fall Time 275 475 700 275 475 700 275 475 700 ps —

t
tf 20% to 80%

NOTE:

1. Within-device skew is defined as identical transitions on similar paths
through a device.

PRODUCT ORDERING CODE

Ordering Package Operating

Code Type Range

SY10E256JC J28-1 Commercial
SY10E256JCTR J28-1 Commercial
SY100E256JC J28-1 Commercial
SY100E256JCTR J28-1 Commercial

2