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INTEGRATED CIRCUITS
CBT3257 Quad 1-of-2 multiplexer/demultiplexer
Product data Supersedes data of 27 Sep 2002 2002 Dec 13
Philips Semiconductors
Philips Semiconductors
Product data
Quad 1-of-2 multiplexer/demultiplexer
CBT3257
FEATURES
* 5 switch connection between two ports * TTL-compatible input levels * 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
PIN CONFIGURATION
S 1B1 1B2 1A 2B1 2B2 2A 1 2 3 4 5 6 7 8 16 VCC 15 OE 14 4B1 13 4B2 12 4A 11 3B1 10 3B2 9 3A
DESCRIPTION
The CBT3257 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) and select-control (S) inputs select the appropriate B1 and B2 outputs for the A-input data. The CBT3257 is characterized for operation from -40 to +85 C.
GND
SA00533
PIN DESCRIPTION
PIN NUMBER 1 2, 3, 5, 6, 10, 11, 13, 14 4, 7, 9, 12 8 15 16 SYMBOL S 1B1, 1B2, 2B1, 2B2 3B1, 3B2 4B1, 4B2 1A, 2A, 3A, 4A GND OE VCC NAME AND FUNCTION Select-control input B outputs A inputs Ground (0 V) Output enable Positive supply voltage
ORDERING INFORMATION
PACKAGES 16-pin plastic SO 16-pin plastic SSOP 16-pin plastic SSOP (QSOP) 16-pin plastic TSSOP TEMPERATURE RANGE -40 to 85 C -40 to 85 C -40 to 85 C -40 to 85 C ORDER CODE CBT3257D CBT3257DB CBT3257DS CBT3257PW TOPSIDE MARK CBT3257D CT3257 CBT3257 CBT3257 DWG NUMBER SOT109-1 SOT338-1 SOT519-1 SOT403-1
Standard packing quantities and other packaging data is available at www.philipslogic.com/packaging.
2002 Dec 13
2
Philips Semiconductors
Product data
Quad 1-of-2 multiplexer/demultiplexer
CBT3257
LOGIC DIAGRAM (positive logic)
1A 4 2 1B1
3
1B2
2A
7
5
2B1
6
2B2
3A
9
11
3B1
10
3B2
4A
12
14
4B1
13
4B2
S
1
OE
15
SA00638
FUNCTION TABLE
INPUTS OE L L H S L H X FUNCTION A port = B1 port A port = B2 port Disconnect
2002 Dec 13
3
Philips Semiconductors
Product data
Quad 1-of-2 multiplexer/demultiplexer
CBT3257
ABSOLUTE MAXIMUM RATINGS1
SYMBOL VCC VI IK Tstg PARAMETER DC supply voltage DC input voltage2 Continuous channel current Input clamp current Storage temperature range VI/O < 0 CONDITIONS RATING -0.5 to +7.0 -0.5 to +7.0 128 -50 -65 to +150 UNIT V V mA mA 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
SYMBOL VCC VIH VIL Tamb DC supply voltage High-level input voltage Low-level Input voltage Operating free-air temperature range PARAMETER LIMITS MIN 4.5 2.0 -- -40 MAX 5.5 -- 0.8 +85 UNIT V V V C
NOTE: 1. All unused control inputs of the device must be held at VCC or GND to ensure proper device operation.
DC ELECTRICAL CHARACTERISTICS
LIMITS SYMBOL VIK VP II ICC ICC CI CIO(OFF) PARAMETER Input clamp voltage Pass voltage Input leakage current Quiescent supply current Additional supply current per input pin2 Control pins Power-off leakage current A port B port TEST CONDITIONS VCC = 4.5 V; II = -18 mA VI = VCC = 5.0 V; I/O = -100 mA VCC = 5.5 V; VI = GND or 5.5 V VCC = 5.5 V; IO = 0, VI = VCC or GND VCC = 5.5 V, one input at 3.4 V, other inputs at VCC or GND VI= 3 V or 0 VO = 3 V or 0; OE = VCC VO = 3 V or 0; OE = VCC VCC = 4.5 V; VI = 0V; II = 64 mA ron3 On-resistance VCC = 4.5 V; VI = 0V; II = 30 mA VCC = 4.5 V; VI = 2.4 V; II = 15 mA Tamb = -40 to +85 C MIN -- 3.4 -- -- -- -- -- -- -- -- -- TYP1 -- 3.6 -- -- -- 3.3 9.9 6.4 5 5 10 MAX -1.2 3.9 1 3 2.5 -- -- -- 7 7 15 V V A A mA pF pF pF UNIT
NOTES: 1. All typical values are at VCC = 5 V, Tamb = 25 C. 2. This is the increase in supply current for each input that is at the specified TTL voltage level rather than VCC or GND 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.
2002 Dec 13
4
Philips Semiconductors
Product data
Quad 1-of-2 multiplexer/demultiplexer
CBT3257
AC CHARACTERISTICS
Tamb = -40 to +85 C; CL = 50 pF LIMITS SYMBOL tpd tpd ten tdis PARAMETER Propagation delay1 Propagation delay Output enable time to High and Low level Output disable time from High and Low level FROM (INPUT) A or B S OE S OE S TO (OUTPUT) B or A A A or B B A or B B VCC = +5.0 V 0.5 V MIN -- 1.6 1.8 1.6 2.2 1.0 MAX 0.25 5.0 5.1 5.2 5.5 5.0 ns ns ns ns ns ns UNIT
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).
AC WAVEFORMS
VM = 1.5 V, VIN = GND to 3.0 V
3V 1.5 V INPUT 0V tPLH tPHL VOH 1.5 V OUTPUT VOL SA00028 1.5 V 1.5 V
TEST CIRCUIT AND WAVEFORMS
7V From Output Under Test CL = 50 pF 500 S1 Open GND 500
Load Circuit
TEST tpd tPLZ/tPZL tPHZ/tPZH
S1 open 7V open
Waveform 1. Input to Output Propagation Delays
DEFINITIONS Load capacitance includes jig and probe capacitance; CL = see AC CHARACTERISTICS for value. 3V Output Control (Low-level enabling ) tPZL Output Waveform 1 S1 at 7 V (see Note) tPZH Output Waveform 2 S1 at Open (see Note) 1.5 V 1.5 V 0V 3.5 V 1.5 V tPHZ VOH - 0.3 V 1.5 V 0V 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. SA00029 SA00012
tPLZ
NOTES: 1. All input pulses are supplied by generators having the following characteristics: PRR 10 MHz, ZO = 50 , tr 2.5 ns, tf 2.5 ns. 2. The outputs are measured one at a time with one transition per measurement.
VOL + 0.3 V VOL VOH
Waveform 2. 3-State Output Enable and Disable Times NOTES: 1. tPLZ and tPHZ are the same as tdis. 2. tPZL and tPZH are the same as ten. 3. tPLH and tPHL are the same as tpd.
2002 Dec 13
5
Philips Semiconductors
Product data
Quad 1-of-2 multiplexer/demultiplexer
CBT3257
SO16: plastic small outline package; 16 leads; body width 3.9 mm
SOT109-1
2002 Dec 13
6
Philips Semiconductors
Product data
Quad 1-of-2 multiplexer/demultiplexer
CBT3257
SSOP16: plastic shrink small outline package; 16 leads; body width 5.3 mm
SOT338-1
2002 Dec 13
7
Philips Semiconductors
Product data
Quad 1-of-2 multiplexer/demultiplexer
CBT3257
SSOP16: plastic shrink small outline package; 16 leads; body width 3.9 mm; lead pitch 0.635 mm
SOT519-1
2002 Dec 13
8
Philips Semiconductors
Product data
Quad 1-of-2 multiplexer/demultiplexer
CBT3257
TSSOP16: plastic thin shrink small outline package; 16 leads; body width 4.4 mm
SOT403-1
2002 Dec 13
9
Philips Semiconductors
Product data
Quad 1-of-2 multiplexer/demultiplexer
CBT3257
REVISION HISTORY Rev Date _2 20021213
Description Product data (9397 750 10869); ECN 853-2381 29158 of 06 November 2002. Modifications: * Corrections to Block Diagram graphic. Product data (9397 750 10332); ECN 853-2381 28892 of 27 September 2002.
_1
20020927
2002 Dec 13
10
Philips Semiconductors
Product data
Quad 1-of-2 multiplexer/demultiplexer
CBT3257
Data sheet status
Level
I
Data sheet status[1]
Objective data
Product status[2] [3]
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. 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).
II
Preliminary data
Qualification
III
Product data
Production
[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. [3] For data sheets describing multiple type numbers, the highest-level product status determines the data sheet status.
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: +31 40 27 24825
Koninklijke Philips Electronics N.V. 2002 All rights reserved. Printed in U.S.A. Date of release: 12-02
For sales offices addresses send e-mail to: sales.addresses@www.semiconductors.philips.com.
Document order number:
9397 750 10869
Philips Semiconductors
2002 Dec 13 11

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