Philips CBT3251 Technical data

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INTEGRATED CIRCUITS

CBT3251

1-of-8 FET multiplexer/demultiplexer

Preliminary data 2002 Sep 09

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Philips Semiconductors Preliminary data

CBT32511-of-8 FET multiplexer/demultiplexer

FEATURES

•5 Ω switch connection between two ports

•TTL-compatible input levels

•Minimal propagation delay through the switch

•ESD protection exceeds 2000 V HBM per JESD22-A114,

200 V MM per JESD22-A115 and 1000 V CDM per JESD22-C101

•Latch-up testing is done to JESDEC Standard JESD78 which

exceeds 100 mA

DESCRIPTION

The CBT3251 is a 1-of-8 high-speed TTL-compatible FET
multiplexer/demultiplexer. The low on resistance of the switch allows
inputs to be connected to outputs without adding propagation delay
or generating additional ground bounce noise.

When output enable (OE
and S2 select one of the B outputs for the A-input data.

The CBT3251 is characterized for operation from –40 to +85°C.

) is low, the CBT3251 is enabled. S0, S1,

PIN CONFIGURATION

1

B4

2

B3

3

B2

4

B1

5

A

6

NC

7

OE

89

GND

16
15
14
13
12
11
10

SA00570

V

CC

B5
B6
B7
B8
S0
S1
S2

PIN DESCRIPTION

PIN NUMBER SYMBOL NAME AND FUNCTION

1, 2, 3,

4, 12,

13, 14,

15

5 A A input
6 NC No internal connection
7 OE Output enable
8 GND Ground (0 V)

9, 10, 11 S0, S1, S2 Select-control input

16 V

B1, B2, B3, B4,

B5, B6, B7, B8

CC

B outputs

Positive supply voltage

ORDERING INFORMATION

PACKAGES TEMPERATURE RANGE ORDER CODE TOPSIDE MARK DWG NUMBER

16-pin plastic SOIC –40 to 85 °C CBT3251D CBT3251D SOT109-1
16-pin plastic SSOP –40 to 85 °C CBT3251DB CT3251 SOT338-1
16-pin plastic SSOP (QSOP) –40 to 85 °C CBT3251DS CBT3251 SOT519-1
16-pin plastic TSSOP –40 to 85 °C CBT3251PW CBT3251 SOT403-1

Standard packing quantities and other packaging data is available at www.philipslogic.com/packaging.

2002 Sep 09

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Philips Semiconductors Preliminary data

FUNCTION

CBT32511-of-8 FET multiplexer/demultiplexer

LOGIC DIAGRAM (positive logic)

OE

5

A

7

11

S0

10

S1

9

S2

4

B1

3

B2

2

B3

1

B4

15

B5

14

B6

13

B7

12

B8

FUNCTION TABLE

INPUTS

OE S2 S1 S0

L L L L A port = B1 port
L L L H A port = B2 port
L L H L A port = B3 port
L L H H A port = B4 port
L H L L A port = B5 port
L H L H A port = B6 port
L H H L A port = B7 port
L H H H A port = B8 port

H X X X Disconnect

SA00636

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Philips Semiconductors Preliminary data

SYMBOL

PARAMETER

UNIT

C

Power-off leakage current

o

3

on

CBT32511-of-8 FET multiplexer/demultiplexer

ABSOLUTE MAXIMUM RATINGS

SYMBOL

V

CC

V

I

DC supply voltage –0.5 to +7.0 V
DC input voltage

PARAMETER CONDITIONS RATING UNIT

2

1

–0.5 to +7.0 V

Continuous channel current 128 mA

I

T

stg

Input clamp current V

K

< 0 –50 mA

I/O

Storage temperature range –65 to +150 °C

NOTES:

1. Stresses beyond those listed may cause permanent damage to the device. These are stress ratings only and functional operation of the
device at these or any other conditions beyond those indicated under “recommended operating conditions” is not implied. Exposure to
absolute-maximum-rated conditions for extended periods may affect device reliability .

2. The input and output negative-voltage ratings may be exceeded if the input and output clamp-current ratings are observed.

RECOMMENDED OPERATING CONDITIONS

LIMITS

MIN MAX

V

CC

V

V

T

amb

NOTE:

1. All unused control inputs of the device must be held at V

DC supply voltage 4.5 5.5 V
High-level input voltage 2.0 — V

IH

Low-level Input voltage — 0.8 V

IL

Operating free-air temperature range –40 +85 °C

or GND to ensure proper device operation.

CC

DC ELECTRICAL CHARACTERISTICS

SYMBOL PARAMETER TEST CONDITIONS T

V
V

I

I

CC

∆I

C

IO(OFF)

Input clamp voltage VCC = 4.5 V; II = –18 mA — — –1.2 V

IK

Pass voltage VI = VCC = 5.5 V; I/O = –100 mA 3.4 3.6 3.9 V

P

Input leakage current VCC = 5.5 V; VI = GND or 5.5 V — — ±1 µA

I

Quiescent supply current VCC = 5.5 V; IO = 0, VI = VCC or GND — — 3 µA
Control inputs

CC

Control pins VI= 3 V or 0 — 3.5 — pF

I

2

A port VO = 3 V or 0; OE = V
B port VO = 3 V or 0; OE = V

VCC = 5.5 V, one input at 3.4 V,
other inputs at VCC or GND

CC
CC

VCC = 4 V; TYP @ VCC = 4 V;
VI = 2.4 V; II = 15 mA

r

n

On-resistance

VCC = 4.5 V; VI = 0 V; II = 64 mA — 5 7 Ω
VCC = 4.5 V; VI = 0 V; II = 30 mA — 5 7 Ω
VCC = 4.5 V; VI = 2.4 V; II = 15 mA — 10 15 Ω

NOTES:

1. All typical values are at V

2. This is the increase in supply current for each input that is at the specified TTL voltage level rather than V

= 5 V, T

CC

amb

= 25 °C.

3. Measured by the voltage drop between the A and the B terminals at the indicated current through the switch.
On-state resistance is determined by the lowest voltage of the two (A or B) terminals.

= –40 to +85 °C UNIT

amb

MIN TYP

— — 2.5 mA

— 17.5 — pF
— 4.0 — pF

— 14 20 Ω

CC

LIMITS

1

or GND

MAX

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Philips Semiconductors Preliminary data

(OUTPUT)

t

t

CBT32511-of-8 FET multiplexer/demultiplexer

AC CHARACTERISTICS

T

= –40 to +85 °C; CL = 50 pF

amb

SYMBOL PARAMETER FROM (INPUT)

t

pd

t

pd

en

dis

Propagation delay
Propagation delay S A 2 5.5 ns

Output enable time
to High and Low level

Output disable time
from High and Low level

1

A or B B or A — 0.25 ns

S B 1.5 5.6 ns

OE A or B 1.6 5.8 ns

S B 1.9 6.4 ns

OE A or B 2.3 6.2 ns

TO

NOTE:

1. The propagation delay is the calculated RC time constant of the typical on-state resistance of the switch and the specified load capacitance,
when driven by an ideal voltage source (zero output impedance).

LIMITS
VCC = +5.0 V ±0.5 V
MIN MAX

UNIT

AC WAVEFORMS

VM = 1.5V, VIN = GND to 3.0V

INPUT

OUTPUT

1.5 V

t

PLH

1.5 V 1.5 V

Waveform 1. Input to Output Propagation Delays

Output Control

Output

Waveform 1

S1 at 7 V

(see Note)

Output

Waveform 2

S1 at Open

(see Note)

1.5 V 1.5 V

t

PZL

1.5 V

t

PZH

1.5 V

Note:

Waveform 1 is for an output with internal conditions such that
the output is low except when disabled by the output control.

Waveform 2 is for an output with internal conditions such that
the output is high except when disabled by the output control.

Waveform 2. 3-State Output Enable and Disable Times

NOTES:

1. t

2. t

3. t

PLZ
PZL
PLH

and t
and t

and t

are the same as t

PHZ

are the same as ten.

PZH

are the same as tpd.

PHL

dis

1.5 V

t

PHL

t

PLZ

V

t

PHZ

V

.

OL

OH

+ 0.3 V

– 0.3 V

SA00571

3 V

0 V

V

OH

V

OL

SA00028

3 V

0 V

3.5 V

V

OL

V

OH

0 V

TEST CIRCUIT AND WAVEFORMS

From Output
Under Test

C

= 50 pF

L

DEFINITIONS

= Load capacitance includes jig and probe capacitance;

C

L

see AC CHARACTERISTICS for value.

500 Ω

500 Ω

Load Circuit

TEST S1

t

pd

t

PLZ/tPZL

t

PHZ/tPZH

open

7 V

open

NOTES:

1. All input pulses are supplied by generators having the following
characteristics: PRR ≤ 10 MHz, Z

2. The outputs are measured one at a time with one transition per

= 50 Ω, tr ≤ 2.5 ns, tf ≤ 2.5 ns.

O

measurement.

7 V

S1

Open

GND

SA00012

2002 Sep 09

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Philips Semiconductors Preliminary data

CBT32511-of-8 FET multiplexer/demultiplexer

SO16: plastic small outline package; 16 leads; body width 3.9 mm SOT109-1

2002 Sep 09

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Philips Semiconductors Preliminary data

CBT32511-of-8 FET multiplexer/demultiplexer

SSOP16: plastic shrink small outline package; 16 leads; body width 5.3 mm SOT338-1

2002 Sep 09

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Philips Semiconductors Preliminary data

CBT32511-of-8 FET multiplexer/demultiplexer

SSOP16: plastic shrink small outline package; 16 leads;
body width 3.9 mm; lead pitch 0.635 mm SOT519-1

2002 Sep 09

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Philips Semiconductors Preliminary data

CBT32511-of-8 FET multiplexer/demultiplexer

TSSOP16: plastic thin shrink small outline package; 16 leads; body width 4.4 mm SOT403-1

2002 Sep 09

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Philips Semiconductors Preliminary data

CBT32511-of-8 FET multiplexer/demultiplexer

Data sheet status

Product

Data sheet status

Objective data

Preliminary data

Product data

[1] Please consult the most recently issued data sheet before initiating or completing a design.
[2] The product status of the device(s) described in this data sheet may have changed since this data sheet was published. The latest information is available on the Internet at URL

http://www.semiconductors.philips.com.

[1]

status

Development

Qualification

Production

[2]

Definitions

Short-form specification — The data in a short-form specification is extracted from a full data sheet with the same type number and title. For

detailed information see the relevant data sheet or data handbook.
Limiting values definition — Limiting values given are in accordance with the Absolute Maximum Rating System (IEC 60134). Stress above one

or more of the limiting values may cause permanent damage to the device. These are stress ratings only and operation of the device at these or
at any other conditions above those given in the Characteristics sections of the specification is not implied. Exposure to limiting values for extended
periods may affect device reliability.

Application information — Applications that are described herein for any of these products are for illustrative purposes only. Philips
Semiconductors make no representation or warranty that such applications will be suitable for the specified use without further testing or
modification.

Disclaimers

Life support — These products are not designed for use in life support appliances, devices or systems where malfunction of these products can

reasonably be expected to result in personal injury . Philips Semiconductors customers using or selling these products for use in such applications
do so at their own risk and agree to fully indemnify Philips Semiconductors for any damages resulting from such application.

Right to make changes — Philips Semiconductors reserves the right to make changes, without notice, in the products, including circuits, standard
cells, and/or software, described or contained herein in order to improve design and/or performance. Philips Semiconductors assumes no
responsibility or liability for the use of any of these products, conveys no license or title under any patent, copyright, or mask work right to these
products, and makes no representations or warranties that these products are free from patent, copyright, or mask work right infringement, unless
otherwise specified.

Contact information

For additional information please visit
http://www.semiconductors.philips.com . Fax: [phone]

For sales offices addresses send e-mail to:

[e-mail].

Definitions

This data sheet contains data from the objective specification for product development.

Philips Semiconductors reserves the right to change the specification in any manner without notice.

This data sheet contains data from the preliminary specification. Supplementary data will be
published at a later date. Philips Semiconductors reserves the right to change the specification
without notice, in order to improve the design and supply the best possible product.

This data sheet contains data from the product specification. Philips Semiconductors reserves the
right to make changes at any time in order to improve the design, manufacturing and supply.
Changes will be communicated according to the Customer Product/Process Change Notification
(CPCN) procedure SNW-SQ-650A.

 Koninklijke Philips Electronics N.V. 2002

All rights reserved. Printed in U.S.A.

Date of release: 08-02

Document order number:

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2002 Sep 09

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