Datasheet CBT3244A Datasheet (Philips)

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INTEGRATED CIRCUITS

CBT3244A

Octal bus switch with quad output enables

Product data sheet

Philips
Semiconductors

2004 May 26

Philips Semiconductors Product data sheet

CBT3244AOctal bus switch with quad output enables

FEATURES

•Standard ’244-type pinout

•5 Ω switch connection between two ports

•TTL compatible control input levels

•Package options include plastic small outline (D), shrink small

outline (DB), QSOP (DS), and thin shrink small outline (TSSOP)

•Latch-up protection exceeds 500 mA per JESD78

•ESD protection exceeds 1000 V HBM per JESD22-A114,

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

DESCRIPTION

The CBT3244A provides eight bits of high-speed TTL-compatible
bus switching in a standard ’244 device pinout. The low on-state
resistance of the switch allows connections to be made with minimal
propagation delay.

The CBT3244A device is organized as two 4-bit low-impedance
switches with separate output-enable (OE
LOW, the switch is on and data can flow from port A to port B, or
vice versa. When OE

is HIGH, the switch is open and

high-impedance state exists between the two ports.
The CBT3244A is characterized for operation from –40 °C to 85 °C.

) inputs. When OE is

PIN CONFIGURATION — SO, SSOP, QSOP, and
TSSOP

SA00501

20

V

CC

2OE

19

1B1

18

2A4

17

1B2

16

2A3

15

1B3

14

2A2

13
12

2A1

1

1OE

2

1A1

3

2B4

4

1A2

5

2B3

6

1A3

7

2B2

8

1A4

9

2B1 1B4

10 11

GND

Figure 1. Pin configuration — SO, SSOP, QSOP, and TSSOP

PIN DESCRIPTION

PIN NUMBER SYMBOL NAME AND FUNCTION

1, 19 1OE, 2OE Output enable

2, 4, 6, 8 1A1–1A4 Inputs
11, 13, 15, 17 2A1–2A4 Inputs
18, 16, 14, 12 1B1–1B4 Outputs

9, 7, 5, 3 2B1–2B4 Outputs

10 GND Ground (0V)
20 V

CC

Positive supply voltage

ORDERING INFORMATION

PACKAGES TEMPERATURE RANGE ORDER CODE TOPSIDE MARK DWG NUMBER

20-Pin Plastic TSSOP –40 °C to 85 °C CBT3244APW CT3244A SOT360-1
20-Pin Plastic SSOP (QSOP) –40 °C to 85 °C CBT3244ADS CT3244ADS SOT724-1
20-Pin Plastic SSOP –40 °C to 85 °C CBT3244ADB CT3244A SOT339-1
20-Pin Plastic SO –40 °C to 85 °C CBT3244AD CBT3244AD SOT163-1

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

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Philips Semiconductors Product data sheet

SYMBOL

PARAMETER

UNIT

CBT3244AOctal bus switch with quad output enables

LOGIC SYMBOL

2

1A1

8

1A4

1

1OE

11

2A1

17

2A4

19

2OE

18

12

9

3

SA00503

1B1

1B4

2B1

2B4

FUNCTION TABLE

INPUTS OUTPUTS

1OE 2OE 1A, 1B 2A, 2B

L L 1A = 1B 2A = 2B

L H 1A = 1B Z
H L Z 2A = 2B
H H Z Z

H = High voltage level
L = Low voltage level

Z = High-impedance “off” state

ABSOLUTE MAXIMUM RATINGS

SYMBOL

V

CC

I

IK

V

I

I

OK

V

OUT

I

OUT

T

stg

DC supply voltage –0.5 to +7.0 V
DC input diode current VI < 0 V –18 mA
DC input voltage
DC output diode current VO < 0 V –50 mA
DC output voltage
DC output current output in LOW state 128 mA
Storage temperature range –65 to 150 °C

PARAMETER CONDITIONS RATING UNIT

3

3

1, 2

–1.2 to +7.0 V

output in Off or HIGH state –0.5 to +7 V

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 performance capability of a high-performance integrated circuit in conjunction with its thermal environment can create ju nction
temperatures which are detrimental to reliability. The maximum junction temperature of this integrated circuit should not exceed 150°C.

3. The input and output voltage ratings may be exceeded if the input and output current ratings are observed.

RECOMMENDED OPERATING CONDITIONS

LIMITS

Min Max

T

V

CC

V
V

amb

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

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Philips Semiconductors Product data sheet

3

CBT3244AOctal bus switch with quad output enables

DC ELECTRICAL CHARACTERISTICS

LIMITS

T

SYMBOL PARAMETER TEST CONDITIONS

V

I

∆I

C

IO(OFF)

I

CC

C

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

IK

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 — 1 3 µA
Additional supply current per

CC

input pin
Control pins input capacitance VI= 3 V or 0 V, OE = V

I

2

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

CC

Input/output capacitance OE = VCC = 5.0 V — 3 — pF

VCC = 4.5 V; VI = 0 V; II = 64 mA — 4 7

r

on

On-resistance

VCC = 4.5 V; VI = 0 V; II = 30 mA — 4 7
VCC = 4.5 V; VI = 2.4 V; II = 15 mA — 8 15

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 °C to +85 °C

amb

Min Typ

1

Max

UNIT

— — 2.5 mA

— 3 — pF

or GND.

CC

Ω

AC CHARACTERISTICS

GND = 0 V; tR; CL = 50 pF

LIMITS

SYMBOL PARAMETER

t

pd

t

en

t

dis

Propagation delay
Output enable time

to HIGH and LOW level
Output disable time

from HIGH and LOW level

1

FROM

(INPUT)

A or B B or A — .25 ns

OE A or B 1.0 5.6 ns

OE A or B 1.0 6.0 ns

NOTE:

1. This parameter is warranted but not production tested. The propagation delay is based on the RC time constant of the typical on-state
resistance of the switch and a load capacitance of 50 pF, when driven by an ideal voltage source (zero output impedance).

TO

(OUTPUT)

T

= –40 °C to +85 °C

amb

VCC = +5.0 V ± 0.5 V

Min Max

UNIT

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Philips Semiconductors Product data sheet

CBT3244AOctal bus switch with quad output enables

AC WAVEFORMS

VM = 1.5 V, VIN = GND to 3.0 V

+ 0.3 V

– 0.3 V

SA00029

3 V

0 V

3.5 V

V

OL

V

OH

0 V

INPUT

OUTPUT

1.5 V

t

PLH

1.5 V 1.5 V

1.5 V

t

PHL

Waveform 1. Input to Output Propagation Delays

3 V

0 V

V

OH

V

OL

SA00028

Output Control

(Low-level

enabling )

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.

t

t

PHZ

PLZ

V

OL

V

OH

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 ≤ 10MHz, 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

Waveform 2. 3-State Output Enable and Disable Times

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Philips Semiconductors Product data sheet

CBT3244AOctal bus switch with quad output enables

TSSOP20: plastic thin shrink small outline package; 20 leads; body width 4.4 mm SOT360-1

2004 May 26

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Philips Semiconductors Product data sheet

CBT3244AOctal bus switch with quad output enables

SSOP20: plastic shrink small outline package; 20 leads;
body width 3.9 mm; lead pitch 0.635 mm SOT724-1

2004 May 26

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Philips Semiconductors Product data sheet

CBT3244AOctal bus switch with quad output enables

SSOP20: plastic shrink small outline package; 20 leads; body width 5.3 mm SOT339-1

2004 May 26

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Philips Semiconductors Product data sheet

CBT3244AOctal bus switch with quad output enables

SO20: plastic small outline package; 20 leads; body width 7.5 mm SOT163-1

2004 May 26

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Philips Semiconductors Product data sheet

CBT3244AOctal bus switch with quad output enables

REVISION HISTORY

Rev Date Description
_1 20040526 Product data sheet (9397 750 13281)

Data sheet status

Level

I

Data sheet status

Objective data

[1]

Product

[2] [3]

status

Development

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.

II

III

[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

[3] For data sheets describing multiple type numbers, the highest-level product status determines the data sheet status.

Preliminary data

Product data

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

Qualification

Production

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. Relevant
changes will be communicated via a Customer Product/Process Change Notification (CPCN).

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 in the products—including circuits, standard cells, and/or software—described
or contained herein in order to improve design and/or performance. When the product is in full production (status ‘Production’), relevant changes will be communicated
via a Customer Product/Process Change Notification (CPCN). 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].

Document order number: 9397 750 13281

 Koninklijke Philips Electronics N.V. 2004

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

Date of release: 05-04

Philips
Semiconductors

2004 May 26

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