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INTEGRATED CIRCUITS
CBT3245A Octal bus switch
Product data File under Integrated Circuits -- ICL03 2002 Feb 18
Philips Semiconductors
Philips Semiconductors
Product data
Octal bus switch
CBT3245A
FEATURES
* Standard '245-type pinout * 5 switch connection between two ports * TTL compatible control input levels * Package options include plastic small outline (D), shrink small
outline (DB), thin shrink small outline (TSSOP)
DESCRIPTION
The CBT3245A provides eight bits of high-speed TTL-compatible bus switching in a standard '245 device pinout. The low on-state resistance of the switch allows connections to be made with minimal propagation delay. The CBT3245A device is organized as one 8-bit switch. When enable (OE) is low, the switch is on and port A is connected to port B. When OE is high, the switch is open and a high-impedance state exists between the two ports. The CBT3245A is characterized for operation from -40 to 85 C.
* Latch-up protection exceeds 500 mA per JESD78 * ESD protection exceeds 2000 V HBM per JESD22-A114,
150 V MM per JESD22-A115 and 1000 V CDM per JESD22-C101
QUICK REFERENCE DATA
SYMBOL tPLH tPHL CIO(OFF) ICC PARAMETER Propagation delay An to Yn Pin capacitance (OFF state) Quiescent supply current CONDITIONS Tamb = 25 C; GND = 0 V CL = 50 pF; VCC = 5 V VO = 3 V or 0 V VCC =5.5 V; IO = 0; VI = VCC or GND TYPICAL 250 6.6 1 UNIT ps pF A
ORDERING INFORMATION
PACKAGES 20-Pin Plastic TSSOP 20-Pin Plastic SSOP 20-Pin Plastic SOP TEMPERATURE RANGE -40 to 85 C -40 to 85 C -40 to 85 C ORDER CODE CBT3245APW CBT3245ADB CBT3245AD DWG NUMBER SOT360-1 SOT339-1 SOT163-1
PIN CONFIGURATION
PIN DESCRIPTION
PIN NUMBER 1 SYMBOL NC OE A1-A8 B1-B8 GND VCC NAME AND FUNCTION No internal connection Output enable input Inputs Outputs Ground (0V) Positive supply voltage
NC A1 A2 A3 A4 A5 A6 A7 A8
1 2 3 4 5 6 7 8 9
20 19 18 17 16 15 14 13 12 11
VCC OE B1 B2 B3 B4 B5 B6 B7 B8
19 2, 3, 4, 5, 6, 7, 8, 9 18, 17, 16, 15, 14, 13, 12, 11 10 20
GND 10
SA00507
2002 Feb 18
2
853-2313 27745
Philips Semiconductors
Product data
Octal bus switch
CBT3245A
LOGIC SYMBOL
FUNCTION TABLE
INPUT INPUTS/OUTPUTS A, B A=B Z OE L
A1
2
18
B1
A8
9
11
H
B8
H = High voltage level L = Low voltage level Z = High impedance "off " state
OE
19
SA00508
ABSOLUTE MAXIMUM RATINGS1, 2
SYMBOL VCC IIK VI IOK VOUT IOUT Tstg PARAMETER DC supply voltage DC input diode current DC input voltage3 DC output diode current DC output voltage3 VO < 0 output in Off or High state output in Low state VI < 0 CONDITIONS RATING -0.5 to +7.0 -50 -0.5 to +7.0 -50 -0.5 to +7 128 -65 to 150 UNIT V mA V mA V mA C
DC output current Storage temperature range
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 junction 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 SYMBOL VCC VIH VIL Tamb DC supply voltage High-level input voltage Low-level Input voltage Operating free-air temperature range PARAMETER Min 4.0 2.0 -- -40 Max 5.5 -- 0.8 +85 V V V C UNIT
2002 Feb 18
3
Philips Semiconductors
Product data
Octal bus switch
CBT3245A
DC ELECTRICAL CHARACTERISTICS
LIMITS SYMBOL PARAMETER TEST CONDITIONS Tamb = -40 to +85 C Min VIK II ICC ICC CI CIO(OFF) ron3 Input clamp voltage Input leakage current Quiescent supply current Additional supply current per input pin2 Control pins Pin capacitance (OFF state) VCC = 4.5 V; II = -18 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, OE = VCC VO = 3 V or 0 VCC = 4.5 V; V1 = 0 V; II = 64 mA On-resistance VCC = 4.5 V; V1 = 0 V; II = 30 mA VCC = 4.5 V; V1 = 2.4 V; II = 15 mA -- -- -- -- -- -- -- -- -- Typ1 -- -- 1 -- 3.2 6.6 5 5 10 Max -1.2 5 3 3.5 -- -- 7 7 15 V A A mA pF pF UNIT
NOTES: 1. All typical values are at VCC = 5 V, TA = 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.
AC CHARACTERISTICS
GND = 0 V; tR; CL = 50 pF CBT3245A SYMBOL PARAMETER FROM (INPUT) TO (OUTPUT) Tamb = -40 to +85 C VCC = +5.0 V 0.5 V Min tpd ten tdis Propagation delay1 Output enable time to High and Low level Output disable time from High and Low level A or B OE OE B or A A or B A or B -- 1.0 1.0 Max 0.25 5.9 6.0 ns ns ns UNIT
NOTES: 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).
2002 Feb 18
4
Philips Semiconductors
Product data
Octal bus switch
CBT3245A
AC WAVEFORMS
VM = 1.5 V, VIN = GND to 3.0 V
3V 3V 1.5 V INPUT 0V tPLH tPHL VOH 1.5 V OUTPUT VOL Output Waveform 2 S1 at Open (see Note) 1.5 V Output Waveform 1 S1 at 7 V (see Note) tPZH tPZL tPLZ 1.5 V Output Control (Low-level enabling ) 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.
VOL + 0.3 V VOL VOH
SA00028
Waveform 1. Input to Output Propagation Delays
SA00029
Waveform 2. 3-State Output Enable and Disable Times
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
DEFINITIONS Load capacitance includes jig and probe capacitance; CL = see AC CHARACTERISTICS for value.
SA00012
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.
2002 Feb 18
5
Philips Semiconductors
Product data
Octal bus switch
CBT3245A
SO20: plastic small outline package; 20 leads; body width 7.5 mm
SOT163-1
2002 Feb 18
6
Philips Semiconductors
Product data
Octal bus switch
CBT3245A
SSOP20: plastic shrink small outline package; 20 leads; body width 5.3 mm
SOT339-1
2002 Feb 18
7
Philips Semiconductors
Product data
Octal bus switch
CBT3245A
TSSOP20: plastic thin shrink small outline package; 20 leads; body width 4.4 mm
SOT360-1
2002 Feb 18
8
Philips Semiconductors
Product data
Octal bus switch
CBT3245A
NOTES
2002 Feb 18
9
Philips Semiconductors
Product data
Octal bus switch
CBT3245A
Data sheet status
Data sheet status [1] Objective data Preliminary data Product status [2] Development Qualification 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.
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.
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: +31 40 27 24825
(c) Koninklijke Philips Electronics N.V. 2002 All rights reserved. Printed in U.S.A. Date of release: 02-02
For sales offices addresses send e-mail to: sales.addresses@www.semiconductors.philips.com.
Document order number:
9397 750 09462
Philips Semiconductors
2002 Feb 18 10

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