Philips CBTS3257 Technical data

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CBTS3257

Quad 1-of-2 multiplexer/demultiplexer
with Schottky diode

Product data 2002 Sep 27

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Philips Semiconductors Product data

Quad 1-of-2 multiplexer/demultiplexer
with Schottky diode

FEATURES

•5 Ω switch connection between two ports

•TTL-compatible input levels

•Schottky diodes on I/O clamp undershoot

•Minimal propagation delay through the switch

•Latch-up protection exceeds 500 mA per JESD78

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

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

DESCRIPTION

The CBTS3257 is a quad 1-of-2 high-speed TTL-compatible
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.

Output Enable (OE
appropriate B1 and B2 outputs for the A-input data.

Internal Schottky diode provides I/O undershoot protection.
The CBTS3257 is characterized for operation from –40 to +85 °C.

) and select-control (S) inputs select the

CBTS3257

PIN CONFIGURATION

1

S

2

1B1

3

1B2

4

1A

5

2B1

6

2B2

7

2A

89

GND

PIN DESCRIPTION

PIN NUMBER SYMBOL NAME AND FUNCTION

1 S Select-control input

2, 3,
5, 6,

10, 11,

13, 14

4, 7, 9, 12 1A, 2A, 3A, 4A A inputs

8 GND Ground (0 V)
15 OE Output enable
16 V

1B1, 1B2,

2B1, 2B2
3B1, 3B2
4B1, 4B2

CC

V

16

CC

15

OE

14

4B1

13

4B2

12

4A

11

3B1

10

3B2
3A

SA00533

B outputs

Positive supply voltage

ORDERING INFORMATION

PACKAGES TEMPERATURE RANGE ORDER CODE TOPSIDE MARK DWG NUMBER

16-pin plastic SO –40 to 85 °C CBTS3257D CBTS3257D SOT109-1
16-pin plastic SSOP –40 to 85 °C CBTS3257DB CS3257 SOT338-1
16-pin plastic SSOP (QSOP) –40 to 85 °C CBTS3257DS CBS3257 SOT519-1
16-pin plastic TSSOP –40 to 85 °C CBTS3257PW CBS3257 SOT403-1

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

2002 Sep 27

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Philips Semiconductors Product data

FUNCTION

Quad 1-of-2 multiplexer/demultiplexer
with Schottky diode

LOGIC DIAGRAM (positive logic)

4

1A

7

2A

9

3A

12

4A

2

1B1

3

1B2

5

2B1

6

2B2

11

3B1

10

3B2

14

4B1

CBTS3257

FUNCTION TABLE

INPUTS

OE S

L L A port = B1 port
L H A port = B2 port

H X Disconnect

OE

13

4B2

1

S

15

SA00532

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Philips Semiconductors Product data

SYMBOL

PARAMETER

UNIT

VIKInput clamp voltage

V

I

mA

C

Off capacitance

3

Quad 1-of-2 multiplexer/demultiplexer
with Schottky diode

ABSOLUTE MAXIMUM RATINGS

SYMBOL

V

CC

V

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

I

Continuous channel current 128 mA

I

T

stg

Input clamp current V

K

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.

PARAMETER CONDITIONS RATING UNIT

2

RECOMMENDED OPERATING CONDITIONS

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

1

–0.5 to +7.0 V

< 0 –50 mA

I/O

LIMITS

MIN MAX

or GND to ensure proper device operation.

CC

CBTS3257

DC ELECTRICAL CHARACTERISTICS

SYMBOL PARAMETER TEST CONDITIONS T

A or B inputs
Control inputs

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

;

= 4.5 V;

CC

VCC = 5.5 V, one input at 3.4 V,

2

other inputs at VCC or GND

= –18

I

CC
CC

V

P

I

I

I

CC

∆I

CC

C

I

IO(OFF)

p

p

Pass voltage VI = VCC = 5.0 V; I/O = –100 mA 3.4 3.6 3.9 V
Input leakage current VCC = 5.5 V; VI = GND or 5.5 V — — ±1 µA
Quiescent supply current VCC = 5.5 V; IO = 0, VI = VCC or GND — — 3 µA

Additional supply current per input pin
Control pins capacitance VI= 3 V or 0 — 3.3 — pF

p

VCC = 4.5 V; VI = 0V; II = 64 mA — 5 7 Ω

r

on

On-resistance

VCC = 4.5 V; VI = 0V; 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

— — –0.8 V
— — –1.2 V

— — 2.5 mA

— 9.9 — pF
— 6.4 — pF

CC

LIMITS

or GND

1

MAX

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