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| HD26C32A Quadruple Differential Line Receivers With 3 State Outputs ADE-205-575 (Z) 1st. Edition Dec. 2000 Description The HD26C32A provides differential line receivers which realize low power dissipation by CMOS process. The device has four receivers which meet the requirements of EIA standard RS-422A and RS-423A in a 16 pin package. The enable function is common to all four receivers and offers a choise of active high or active low inputs. Fail safe design ensures that if the inputs are open the outputs will always be high. Features * * * * * * * * * Low power dissipation with CMOS process Meets EIA standard RS-422A/423A Input sensitivity: 0.2V (In the range of 7 V of common mode input voltage) Propagation delay time: 19 ns typ Input hysteresis width: 60 mV typ Three state outputs Differential Inputs are includes fail safe circuit Power up and power down protection Pin to pin compatible with HD26LS32/32A HD26C32A Pin Arrangement IN A1 1 IN A2 2 OUT A 3 Enable 4 OUT C 5 IN C2 6 IN C1 7 GND 8 16 VCC 15 IN B1 14 IN B2 13 OUT B 12 Enable 11 OUT D 10 IN D2 9 IN D1 (Top view) Function Table Differential Input VID VTH or OPEN Enable H X VTL < VID < VTH VID VTH H X H X X H L Z X ? : : : : : High level Low level High impedance Irrelevant Indeterminate L Enable X L X L X L H Z L ? Outputs H 2 HD26C32A Absolute Maximum Ratings (Ta = 25C) Item Supply Voltage* 2 Symbol VCC VCM VDIFF VIN IO Tstg 3 Ratings 7 14 14 7 25 -65 to +150 Unit V V V V mA C Common Mode Input Voltage Differential Input Voltage* Enable Input Voltage Output Current Storage Temperature Notes: 1. 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. 2. All voltage values except for differential input voltage are with respect to network ground terminal. 3. Differential input voltage is measured at the noninverting input with respect to the corresponding inverting input. Recommended Operating Conditions (Ta = -40C to +85C) Item Supply Voltage Common Mode Input Voltage Differential Input Voltage Output Current Operating Temperature Enable Input Rise / Fall Time Note: Symbol VCC VCM VDIFF IO Topr t r, t f Min 4.5 -- -- -- -40 -- Typ 5.0 -- -- -- -- -- Max 5.5 7 7 6 85 500 Unit V V V mA C ns 1. This item guarantees maximum limit when one input switchies. Waveform: Refer to test circuit of switching characteristics. 3 HD26C32A Logic Diagram IN A2 IN A1 IN B2 IN B1 IN C2 IN C1 IN D2 IN D1 Enable G Enable G + OUT A - + OUT B - + OUT C - + OUT D - Electrical Characteristics (Ta = -40C to +85C, VCC = 5 V 10%) Item Diffrential Input Threshold Voltage Input Hysteresis Enable Input Voltage Output Voltage Symbol VTH VTL VHYST VIH VIL VOH VOL Output Leak CurrentI Input Current I IN I OZ Min -- -- -- 2.0 -- 3.8 -- -- -- -- 1 Typ -- -- 60 -- -- 4.2 0.2 0.5 -0.5 1.1 Max 0.2 -0.2 -- -- 0.8 -- 0.3 5.0 -5.0 1.5 0.6 -1.1 -2.5 1.0 -1.0 10 23 Unit V V mV V V V V A A mA mA mA mA A A k mA Conditions VCM = -7 to 7 V, VOUT 3.8 V VCM = -7 to 7 V, VOUT 0.3 V VCM = 0 V VCC = 4.5 V, VDIEF = 1 V, IOUT = -6.0 mA VCC = 5.5 V, VDIEF = -1 V, IOUT = 6.0 mA Enable = 0.8 V, Enable = 2.0 V VOUT = VCC Enable = 0.8 V, Enable = 2.0 V VOUT = GND VIN = 10 V, Other Input = GND VIN = 3 V, Other Input = GND VIN = -3 V, Other Input = GND VIN = -10 V, Other Input = GND VI = VCC VI = GND VCM = -7 to 7 V (One Input AC GND) VCC = 5.5 V, VDIEF = 1 V -0.1* -- 0 -- Enable Input Current Input Resistance Supply Current Note: RIN I CC II -- -- 5.8 -- -2.0 -- -- 6.8 16 1. This specification is nonstandard of RS-422A. 4 HD26C32A Switching Characteristics (Ta = -40C to +85C, VCC = 5 V 10%) Item Propagation Delay Time Symbol t PLH t PHL Output Rise / Fall Time t RISE t FALL Output Disable Time t LZ t HZ Output Enable Time t ZL t ZH -- -- Min 7 7 -- Typ 16 16 4 4 13 13 13 13 Max 25 25 9 9 22 22 22 22 Unit ns ns ns ns ns ns ns ns CL = 50 pF, RL = 1000 VDIEF = 2.5 V CL = 50 pF, RL = 1000 VDIEF = 2.5 V CL = 50 pF, VDIEF = 2.5 V, VCM = 0 V Conditions CL = 50 pF, VDIEF = 2.5 V, VCM = 0 V 5 HD26C32A 1. tPLH, tPHL, tRISE, tFALL Test Circuit Input + Pulse Generater *1 Output - CL = 50 pF *2 2V Wave forms 2.5 V Input + 0V 0V -2.5 V 2.5 V Input - 0V 0V -2.5 V t PLH 90 % Output 50 % 10 % tr t PHL 90 % 50 % 10 % tf VOH VOL 6 HD26C32A 2. tHZ, tZH Test Circuit 2.5 V + Output - CL = 50 pF RL = 1000 Input *2 Pulse Generater *1 2V *3 Wave forms 3V Enable 1.3 V 1.3 V 0V 3V 1.3 V Enable 1.3 V 0V t ZH Output t HZ 0.5 V VOH VOL 50 % 7 HD26C32A 3. tLZ, tZL Test circuit VCC RL = 1000 Output - Input CL = 50 pF -2.5 V + Pulse Generator 2V Wave forms 3V Enable 1.3 V 1.3 V 0V 3V 1.3 V Enable 1.3 V 0V t ZL Output t LZ VOH 50 % 0.5 V VOL Notes: 1. 2. 3. The pulse generator has the following characteristics: PRR = 1 MHz, 50 % duty cycle, tr 6 ns, tf 6 ns, Zout = 50 CL includes probe and jig capacitance. To test Enable input, ground Enable input and apply an inverted input waveform. 8 HD26C32A HD26C32A Line Receiver Applications The HD26C32A is a line receiver that meets the EIA RS-422A and RS-423A conditions. It has a high inphase input voltage range, both positive and negative, enabling highly reliable transmission to be performed even in noisy environments. Its main features are listed below. * * * * * Operates on a single 5 V power supply. 0.2 V input sensitivity in in-phase input voltage 7 V range Three-state output On-chip input fail-safe circuit On-chip power up/down protection circuit As shown by the logic diagram, the enable function is common to all four drivers, and either active-high or active-low input can be selected. When exchange is carried out using a party line system, it is better to keep the receiver input bias current constituting the driver load small, as this allows more receivers to be connected. Output Voltage vs. Differential Input Voltage 6.0 Ta = 25C VCC = 5 V 5.0 4.0 3.0 2.0 1.0 0.0 -80 -40 0 40 80 Differential Input Voltage VDIFF (mV) VCM = +7 V VCM = 0 V VCM = -7 V Figure 1 Differential Input Voltage vs. Output Voltage Characteristics Output Voltage VOUT (V) 9 HD26C32A Input Current vs. Input Voltage 2.0 Ta = 25C Input Current IIN (mA) 1.2 C VC = 0 V 5. 5 V 0.4 0.0 -0.4 VC C = -1.2 -2.0 -15 9 -3 0 3 9 Input Voltage VIN (V) 15 Figure 2 Input Voltage vs. Input Current Characteristics VCC Driver R1 R2 Receiver RT R1 R2 Figure 3 Method of Enhancing Fail-Safe Function Differential Input Voltage vs. R1 0.6 0k Differential Input Voltage VDIEF (V) k =3 = 0.5 0.4 0.3 0.2 0.1 0 R2 = R2 R2 10 0k VCC 50 k 300 R2 = R2 = Ta = 25C VCC = 5 V R1 100 R2 VDIFF R1 R2 5 R1 (k) 10 15 Figure 4 R 1, R2 vs. Differential Input Voltage 10 HD26C32A 1. Unidirectional Transmission (1 : 1 Configuration) Driver B A RT D Receiver Data Input F Data Output C E Figure 5 1 : 1 Unidirectional Transmission Line : 1200 m, Duty : 50% Frequency : 100 kHz, RT : 100 A GND- D GND- E B GND- C GND- F GND- GND- H : 5 s/div V : 2 V/div Line : 12 m, Duty : 50% Frequency : 10 MHz, RT : 100 A GND- D GND- E B GND- C GND- F GND- GND- H : 50 ns/div V : 2 V/div Figure 6 Sample Transmission Waveforms 11 HD26C32A 2. Unidirectional Transmission (1 : n Configuration) Driver Data Input Receiver RT RT Data Output Enable Receiver Data Output Data Output Data Output Figure 7 1:n Unidirectional Transmission With this connection method, n receivers are connected for one driver. In the RS-422A standard, ten receivers can be connected simultaneously for one driver. Conversely, it is also possible to connect one receiver for n drivers. 3. Bidirectional Transmission Driver Data Input/ Output RT RT Receiver Data Input/ Output Enable Enable Receiver Driver Figure 8 Bidirectional Transmission When bidirectional data exchange is performed using a combination of the HD26C31 and HD26C32A, since either high or low output control is possible, using complementary enable inputs for the driver and receiver makes it easy to configure the kind of combination illustrated in figure 8. Extending this combination makes it possible to exchange n-bit data simultaneously, and handle a party line system. 12 HD26C32A Package Dimensions Unit: mm 19.20 20.00 Max 16 9 1 1.3 1.11 Max 8 7.40 Max 6.30 0.51 Min 2.54 Min 5.06 Max 7.62 2.54 0.25 0.48 0.10 0.25 - 0.05 0 - 15 Hitachi Code JEDEC EIAJ Mass (reference value) + 0.13 DP-16 Conforms Conforms 1.07 g Unit: mm 10.06 10.5 Max 16 9 1 *0.22 0.05 0.20 0.04 8 0.80 Max 5.5 0.20 7.80 + 0.30 - 2.20 Max 1.15 0 - 8 0.70 0.20 1.27 *0.42 0.08 0.40 0.06 0.12 M Hitachi Code JEDEC EIAJ Mass (reference value) FP-16DA -- Conforms 0.24 g *Dimension including the plating thickness Base material dimension 0.10 0.10 0.15 13 HD26C32A Cautions 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. Hitachi, Ltd. Semiconductor & Integrated Circuits. Nippon Bldg., 2-6-2, Ohte-machi, Chiyoda-ku, Tokyo 100-0004, Japan Tel: Tokyo (03) 3270-2111 Fax: (03) 3270-5109 URL NorthAmerica Europe Asia Japan : : : : http://semiconductor.hitachi.com/ http://www.hitachi-eu.com/hel/ecg http://sicapac.hitachi-asia.com http://www.hitachi.co.jp/Sicd/indx.htm 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://www.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://www.hitachi.com.hk 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 GmbH Electronic Components Group Dornacher Strae 3 D-85622 Feldkirchen, Munich Germany Tel: <49> (89) 9 9180-0 Fax: <49> (89) 9 29 30 00 Hitachi Europe Ltd. Electronic Components Group. Whitebrook Park Lower Cookham Road Maidenhead Berkshire SL6 8YA, United Kingdom Tel: <44> (1628) 585000 Fax: <44> (1628) 585160 Copyright (c) Hitachi, Ltd., 2000. All rights reserved. Printed in Japan. Colophon 2.0 14 |
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