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HD74CBT3257 4-bit 1-of-2 FET Multiplexer / Demultiplexer ADE-205-624B (Z) Rev. 2 Nov. 2001 Description The HD74CBT3257 is a 4-bit 1-of-2 high-speed TTL-compatible FET multiplexer / demultiplexer. The low on-state resistance of the switch allows connections to be made with minimal propagation delay. Output enable (OE) and select control (S) inputs select the appropriate B1 and B2 outputs for the A-input data. Features * Minimal propagation delay through the switch. * 5 switch connection between two ports. * TTL-compatible input levels. * Ultra low quiescent power. -Ideally suited for notebook applications. * Package type Product code example: HD74CBT3257TELL Package type TSSOP-16pin Package code TTP-16DA Package suffix T Taping code ELL(2000pcs / Reel) Notes: 1. As for the Pb-free package is attached the "V" to the end of package code. 2. As for the Pb-free product is attached the "-E" to the end of product code. HD74CBT3257 Function Table Inputs OE L L H H: L: X: High level Low level Immaterial S L H X Function A port = B1 port A port = B2 port Disconnect Pin Arrangement S 1B1 1B2 1A 2B1 2B2 2A GND 1 2 3 4 5 6 7 8 16 VCC 15 OE 14 4B1 13 4B2 12 4A 11 3B1 10 3B2 9 3A (Top view) Rev.2, Nov. 2001, page 2 of 11 HD74CBT3257 Absolute Maximum Ratings Item Supply voltage range Input voltage range Input clamp current Continuous output current Continuous current through VCC or GND Maximum power dissipation *2 at Ta = 25C (in still air) Storage temperature Notes: *1 Symbol VCC VI IIK IO ICC or IGND PT Tstg Ratings -0.5 to 7.0 -0.5 to 7.0 -50 128 100 500 -65 to 150 Unit V V mA mA mA mW C Conditions VI < 0 VO = 0 to VCC TSSOP The absolute maximum ratings are values which must not individually be exceeded, and furthermore, no two of which may be realized at the same time. 1. The input and output voltage ratings may be exceeded even if the input and output clamp-current ratings are observed. 2. The maximum package power dissipation was calculated using a junction temperature of 150C. Recommended Operating Conditions Item Supply voltage range Input voltage range Output voltage range Input transition rise or fall rate Operating free-air temperature Symbol VCC VI VI/O t / v Ta Min 4.0 0 0 0 -40 Max 5.5 5.5 5.5 5 85 Unit V V V ns / V C VCC = 4.5 to 5.5 V Conditions Note: Unused or floating inputs must be held high or low. Rev.2, Nov. 2001, page 3 of 11 HD74CBT3257 Block Diagram 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 Rev.2, Nov. 2001, page 4 of 11 HD74CBT3257 DC Electrical Characteristics (Ta = -40 to 85C) Item Clamp diode voltage Input voltage Symbol VIK VIH VIL On-state switch *2 resistance RON VCC (V) 4.5 4.0 to 5.5 4.0 to 5.5 4.0 Min 2.0 Typ 14 *1 Max -1.2 0.8 20 Unit V V Test conditions IIN = -18 mA VIN = 2.4 V, IIN = 15 mA Typ at VCC = 4.0 V VIN = 0 V, IIN = 64 mA VIN = 0 V, IIN = 30 mA VIN = 2.4 V, IIN = 15 mA 4.5 4.5 4.5 Input current Off-state leakage current Quiescent supply current Increase in ICC *3 per input Notes: IIN IOZ ICC ICC 0 to 5.5 5.5 5.5 5.5 5 5 10 7 7 15 1.0 1.0 3 2.5 A A A mA VIN = 5.5 V or GND 0 A, B VCC VIN = VCC or GND, IO = 0 mA One input at 3.4 V, other inputs at VCC or GND For condition shown as Min or Max use the appropriate values under recommended operating conditions. 1. All typical values are at VCC = 5 V (unless otherwise noted), Ta = 25C. 2. Measured by the voltage drop between the A and B terminals at the indicated current through the switch. On-state resistance is determined by the lower voltage of the two (A or B) terminals. 3. This is the increase in supply current for each input that is at the specified TTL voltage level rather than VCC or GND. Capacitance (Ta = 25C) Item Control input capacitance Input / output capacitance A port B port Symbol CIN CI/O (OFF) VCC (V) 5.0 5.0 5.0 Min Typ 3.5 9 5 Max Unit pF pF Test conditions VIN = 0 or 3 V VO = 0 or 3 V OE = VCC Note: This parameter is determined by device characterization is not production tested. Rev.2, Nov. 2001, page 5 of 11 HD74CBT3257 Switching Characteristics (Ta = -40 to 85C) * VCC = 4.0 V Symbol tPLH tPHL tPLH tPHL tZH tZL tHZ tLZ Min Max 0.35 5.5 5.7 5.6 5.2 5.5 5.2 6.4 ns Unit ns ns ns Test conditions CL = 50 pF RL = 500 CL = 50 pF RL = 500 CL = 50 pF RL = 500 CL = 50 pF RL = 500 FROM (Input) A or B S S OE S OE S OE TO (Output) B or A A B A or B B A or B B A or B Item Propagation delay *1 time Propagation delay time Enable time Disable time * VCC = 5.00.5 V Symbol tPLH tPHL tPLH tPHL tZH tZL tHZ tLZ Min 1.6 1.6 1.8 1.0 2.2 1.0 2.2 Max 0.25 5.0 5.2 5.1 5.0 5.5 5.0 6.8 ns Unit ns ns ns Test conditions CL = 50 pF RL = 500 CL = 50 pF RL = 500 CL = 50 pF RL = 500 CL = 50 pF RL = 500 FROM (Input) A or B S S OE S OE S OE TO (Output) B or A A B A or B B A or B B A or B Item Propagation delay *1 time Propagation delay time Enable time Disable time 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). Rev.2, Nov. 2001, page 6 of 11 HD74CBT3257 Test Circuit See under table 500 S1 OPEN GND *1 CL = 50 pF 500 Load circuit for outputs Symbol t PLH / tPHL t ZH / t HZ t ZL / t LZ S1 OPEN OPEN 7V Note: 1. CL includes probe and jig capacitance. Rev.2, Nov. 2001, page 7 of 11 HD74CBT3257 Waveforms - 1 tr 90 % Input 10 % t PLH 1.5 V 90 % 1.5 V 10 % t PHL V OH Output 1.5 V 1.5 V V OL GND tf 3V Waveforms - 2 tf 90 % Output Control 1.5 V 10 % t ZL 10 % t LZ 3.5 V Waveform - A 1.5 V V OL + 0.3 V t ZH t HZ V OH - 0.3 V 1.5 V GND 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. Waveform - A is for an output with internal conditions such that the output is low except when disabled by the output control. 3. Waveform - B is for an output with internal conditions such that the output is high except when disabled by the output control. 4. The output are measured one at a time with one transition per measurement. V OL V OH tr 90 % 1.5 V GND 3V Waveform - B Rev.2, Nov. 2001, page 8 of 11 HD74CBT3257 Package Dimensions As of July, 2001 Unit: mm 5.00 5.30 Max 16 9 1 0.08 *0.22 + 0.07 - 8 0.65 1.0 6.40 0.20 0 - 8 0.50 0.10 0.20 0.06 0.13 M 0.65 Max 4.40 *0.17 0.05 0.15 0.04 1.10 Max 0.10 0.07 +0.03 -0.04 *Dimension including the plating thickness Base material dimension Hitachi Code JEDEC JEITA Mass (reference value) TTP-16DA -- -- 0.05 g Rev.2, Nov. 2001, page 9 of 11 HD74CBT3257 As of July, 2001 Unit: mm 5.00 5.30 Max 16 9 1 *0.20 0.05 8 0.65 0.13 M 0.65 Max 6.40 0.20 0 - 8 0.50 0.10 1.0 4.40 *0.15 0.05 1.10 Max 0.10 0.07 +0.03 -0.04 *Pd plating Hitachi Code JEDEC JEITA Mass (reference value) TTP-16DAV -- -- 0.05 g Rev.2, Nov. 2001, page 10 of 11 HD74CBT3257 Disclaimer 1. Hitachi neither warrants nor grants licenses of any rights of Hitachi's or any third party's patent, copyright, trademark, or other intellectual property rights for information contained in this document. Hitachi bears no responsibility for problems that may arise with third party's rights, including intellectual property rights, in connection with use of the information contained in this document. 2. Products and product specifications may be subject to change without notice. Confirm that you have received the latest product standards or specifications before final design, purchase or use. 3. Hitachi makes every attempt to ensure that its products are of high quality and reliability. However, contact Hitachi's sales office before using the product in an application that demands especially high quality and reliability or where its failure or malfunction may directly threaten human life or cause risk of bodily injury, such as aerospace, aeronautics, nuclear power, combustion control, transportation, traffic, safety equipment or medical equipment for life support. 4. Design your application so that the product is used within the ranges guaranteed by Hitachi particularly for maximum rating, operating supply voltage range, heat radiation characteristics, installation conditions and other characteristics. Hitachi bears no responsibility for failure or damage when used beyond the guaranteed ranges. Even within the guaranteed ranges, consider normally foreseeable failure rates or failure modes in semiconductor devices and employ systemic measures such as failsafes, so that the equipment incorporating Hitachi product does not cause bodily injury, fire or other consequential damage due to operation of the Hitachi product. 5. This product is not designed to be radiation resistant. 6. No one is permitted to reproduce or duplicate, in any form, the whole or part of this document without written approval from Hitachi. 7. Contact Hitachi's sales office for any questions regarding this document or Hitachi semiconductor products. Sales Offices Hitachi, Ltd. Semiconductor & Integrated Circuits Nippon Bldg., 2-6-2, Ohte-machi, Chiyoda-ku, Tokyo 100-0004, Japan Tel: (03) 3270-2111 Fax: (03) 3270-5109 URL http://www.hitachisemiconductor.com/ For further information write to: Hitachi Semiconductor (America) Inc. 179 East Tasman Drive San Jose,CA 95134 Tel: <1> (408) 433-1990 Fax: <1>(408) 433-0223 Hitachi Europe Ltd. Electronic Components Group Whitebrook Park Lower Cookham Road Maidenhead Berkshire SL6 8YA, United Kingdom Tel: <44> (1628) 585000 Fax: <44> (1628) 585200 Hitachi Europe GmbH Electronic Components Group Dornacher Strae 3 D-85622 Feldkirchen Postfach 201, D-85619 Feldkirchen Germany Tel: <49> (89) 9 9180-0 Fax: <49> (89) 9 29 30 00 Hitachi Asia Ltd. Hitachi Tower 16 Collyer Quay #20-00 Singapore 049318 Tel : <65>-538-6533/538-8577 Fax : <65>-538-6933/538-3877 URL : http://semiconductor.hitachi.com.sg Hitachi Asia Ltd. (Taipei Branch Office) 4/F, No. 167, Tun Hwa North Road Hung-Kuo Building Taipei (105), Taiwan Tel : <886>-(2)-2718-3666 Fax : <886>-(2)-2718-8180 Telex : 23222 HAS-TP URL : http://www.hitachi.com.tw Hitachi Asia (Hong Kong) Ltd. Group III (Electronic Components) 7/F., North Tower World Finance Centre, Harbour City, Canton Road Tsim Sha Tsui, Kowloon Hong Kong Tel : <852>-(2)-735-9218 Fax : <852>-(2)-730-0281 URL : http://semiconductor.hitachi.com.hk Copyright (c) Hitachi, Ltd., 2001. All rights reserved. Printed in Japan. Colophon 5.0 Rev.2, Nov. 2001, page 11 of 11 |
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