HD74HC148 8-to-3-line Octal Priority Encoder REJ03D0573-0200 (Previous ADE-205-447) Rev.2.00 Oct 11, 2005 Description HD74HC148 encodes eight data lines to three-line (4-2-1) binary (octal). Cascading circuitry (enable input EI and enable output EO) is provided to allow octal expansion without the need for external circuitry. The data inputs and outputs are active at the low logic level. Features • • • • • • High Speed Operation: tpd (0 - 7 to A0 - A2) = 15 ns typ (CL = 50 pF) High Output Current: Fanout of 10 LSTTL Loads Wide Operating Voltage: VCC = 2 to 6 V Low Input Current: 1 µA max Low Quiescent Supply Current: ICC (static) = 4 µA max (Ta = 25°C) Ordering Information Part Name Package Type HD74HC148P DILP-16 pin Package Code (Previous Code) PRDP0016AE-B (DP-16FV) Package Abbreviation P — PRSP0016DH-B FP (FP-16DAV) Note: Please consult the sales office for the above package availability. HD74HC148FPEL Taping Abbreviation (Quantity) EL (2,000 pcs/reel) SOP-16 pin (JEITA) Function Table EI H L L L L L L L L L H: L: X: 0 1 2 Inputs 3 X H X X X X X X X L High level Low level Irrelevant X H X X X X X X L H X H X X X X X L H H X H X X X X L H H H Rev.2.00, Oct 11, 2005 page 1 of 5 4 5 6 7 A2 X H X X X L H H H H X H X X L H H H H H X H X L H H H H H H X H L H H H H H H H H H L L L L H H H H A1 Outputs A0 GS EO H H L L H H L L H H H H L H L H L H L H H H L L L L L L L L H L H H H H H H H H HD74HC148 Pin Arrangement 4 1 Inputs 16 VCC 4 5 2 5 6 3 6 GS 7 4 7 3 13 3 EI 5 EI 2 12 2 A2 6 A2 1 11 1 A1 7 A1 0 10 0 EO 15 EO Outputs 14 GS Inputs Outputs A0 GND 8 9 A0 Output (Top view) Absolute Maximum Ratings Item Symbol Rating Unit Supply voltage range VCC –0.5 to +7.0 V Input voltage VIN –0.5 to VCC + 0.5 V Output voltage VOUT –0.5 to VCC + 0.5 V Output current IOUT ±25 mA DC current drain per VCC, GND ICC, IGND ±50 mA DC input diode current IIK ±20 mA DC output diode current IOK ±20 mA Power dissipation per package PT 500 mW Storage temperature Tstg –65 to +150 °C Note: 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. Recommended Operating Conditions Item Supply voltage Symbol VCC Ratings 2 to 6 Unit V Input / Output voltage Operating temperature VIN, VOUT Ta 0 to VCC –40 to 85 V °C tr , tf 0 to 1000 0 to 500 Input rise / fall time Note: *1 0 to 400 1. This item guarantees maximum limit when one input switches. Waveform: Refer to test circuit of switching characteristics. Rev.2.00, Oct 11, 2005 page 2 of 5 ns Conditions VCC = 2.0 V VCC = 4.5 V VCC = 6.0 V HD74HC148 Electrical Characteristics Ta = 25°C Item Input voltage Symbol VCC (V) VIH VIL Output voltage VOH VOL Ta = –40 to+85°C Unit Test Conditions 2.0 Min 1.5 Typ — Max — Min 1.5 Max — 4.5 6.0 3.15 4.2 — — — — 3.15 4.2 — — 2.0 4.5 — — — — 0.5 1.35 — — 0.5 1.35 6.0 2.0 — 1.9 — 2.0 1.8 — — 1.9 1.8 — 4.5 6.0 4.4 5.9 4.5 6.0 — — 4.4 5.9 — — 4.5 6.0 4.18 5.68 — — — — 4.13 5.63 — — 2.0 4.5 — — 0.0 0.0 0.1 0.1 — — 0.1 0.1 6.0 4.5 — — 0.0 — 0.1 0.26 — — 0.1 0.33 — — — — 0.26 ±0.1 — — 0.33 ±1.0 IOL = 5.2 mA µA Vin = VCC or GND — — 4.0 — 40 µA Vin = VCC or GND, Iout = 0 µA Input current Iin 6.0 6.0 Quiescent supply current ICC 6.0 V V V Vin = VIH or VIL IOH = –20 µA IOH = –4 mA IOH = –5.2 mA V Vin = VIH or VIL IOL = 20 µA IOL = 4 mA Switching Characteristics (CL = 50 pF, Input tr = tf = 6 ns) Ta = 25°C Item Propagation delay time Symbol VCC (V) Min — — — Max 290 58 49 Unit ns 0 - 7 to A0 - A2 Test Conditions 2.0 4.5 6.0 tPLH, tPHL 2.0 4.5 6.0 2.0 4.5 6.0 2.0 4.5 6.0 — — — — — — — — — — 16 — — 18 — — 12 — 250 50 43 270 54 46 230 46 39 — — — — — — — — — 315 63 54 340 68 58 290 58 49 ns 0 - 7 to EO ns 0 - 7 to GS ns EI to A0 - A2 2.0 4.5 6.0 2.0 4.5 6.0 2.0 4.5 6.0 — — — — — — — — — — 12 — — 12 — — 5 — 250 50 43 270 54 46 75 15 13 — — — — — — — — — 315 63 54 340 68 58 90 19 16 ns EI to GS ns EI to EO — — 5 10 — 10 pF tPLH, tPHL tPLH, tPHL tPLH, tPHL Input capacitance Max 230 46 39 tPLH, tPHL tPLH, tPHL Output rise/fall time Ta = –40 to +85°C Typ — 15 — Min — — — tTLH, tTHL Cin Rev.2.00, Oct 11, 2005 page 3 of 5 ns HD74HC148 Test Circuit Measurement point CL* Note: CL includes the probe and fig capacitance. Waveforms tr tf 90 % 50 % Input 10 % 10 % t PLH 0V t PHL 90 % Same-phase output VCC 90 % 50 % VOH 90 % 50 % 10 % t PHL 50 % 10 % t TLH t PLH t THL 90 % 90 % Inverse-phase output 50 % 10 % t THL VOL 50 % 10 % VOH VOL t TLH Notes: 1. Input waveform: PRR ≤ 1 MHz, Zo = 50 Ω, tr ≤ 6 ns, tf ≤ 6 ns 2. The output are measured one at a time with one transition per measurement. Rev.2.00, Oct 11, 2005 page 4 of 5 HD74HC148 Package Dimensions JEITA Package Code P-DIP16-6.3x19.2-2.54 RENESAS Code PRDP0016AE-B Previous Code DP-16FV MASS[Typ.] 1.05g D 9 E 16 1 8 b3 0.89 Z A1 A Reference Symbol L e Nom θ c e1 D 19.2 E 6.3 JEITA Package Code P-SOP16-5.5x10.06-1.27 RENESAS Code PRSP0016DH-B *1 Previous Code FP-16DAV 7.4 A1 0.51 b p 0.40 b 3 0.48 0.56 1.30 c 0.19 θ 0° e 2.29 0.25 0.31 2.54 2.79 15° 1.12 L 2.54 MASS[Typ.] 0.24g NOTE) 1. DIMENSIONS"*1 (Nom)"AND"*2" DO NOT INCLUDE MOLD FLASH. 2. DIMENSION"*3"DOES NOT INCLUDE TRIM OFFSET. D F 16 20.32 5.06 Z ( Ni/Pd/Au plating ) Max 7.62 1 A bp e Dimension in Millimeters Min 9 c HE *2 E bp Index mark Reference Symbol Terminal cross section ( Ni/Pd/Au plating ) 1 Z *3 bp Nom D 10.06 E 5.50 Max 10.5 A2 8 e Dimension in Millimeters Min x A1 M 0.00 0.10 0.20 0.34 0.40 0.46 0.15 0.20 0.25 7.80 8.00 2.20 A L1 bp b1 c A c A1 θ y L Detail F 1 θ 0° HE 7.50 1.27 e x 0.12 y 0.15 Z 0.80 0.50 L L Rev.2.00, Oct 11, 2005 page 5 of 5 8° 1 0.70 1.15 0.90 Sales Strategic Planning Div. Nippon Bldg., 2-6-2, Ohte-machi, Chiyoda-ku, Tokyo 100-0004, Japan Keep safety first in your circuit designs! 1. Renesas Technology Corp. puts the maximum effort into making semiconductor products better and more reliable, but there is always the possibility that trouble may occur with them. Trouble with semiconductors may lead to personal injury, fire or property damage. Remember to give due consideration to safety when making your circuit designs, with appropriate measures such as (i) placement of substitutive, auxiliary circuits, (ii) use of nonflammable material or (iii) prevention against any malfunction or mishap. Notes regarding these materials 1. These materials are intended as a reference to assist our customers in the selection of the Renesas Technology Corp. product best suited to the customer's application; they do not convey any license under any intellectual property rights, or any other rights, belonging to Renesas Technology Corp. or a third party. 2. Renesas Technology Corp. assumes no responsibility for any damage, or infringement of any third-party's rights, originating in the use of any product data, diagrams, charts, programs, algorithms, or circuit application examples contained in these materials. 3. All information contained in these materials, including product data, diagrams, charts, programs and algorithms represents information on products at the time of publication of these materials, and are subject to change by Renesas Technology Corp. without notice due to product improvements or other reasons. It is therefore recommended that customers contact Renesas Technology Corp. or an authorized Renesas Technology Corp. product distributor for the latest product information before purchasing a product listed herein. The information described here may contain technical inaccuracies or typographical errors. Renesas Technology Corp. assumes no responsibility for any damage, liability, or other loss rising from these inaccuracies or errors. Please also pay attention to information published by Renesas Technology Corp. by various means, including the Renesas Technology Corp. Semiconductor home page (http://www.renesas.com). 4. When using any or all of the information contained in these materials, including product data, diagrams, charts, programs, and algorithms, please be sure to evaluate all information as a total system before making a final decision on the applicability of the information and products. Renesas Technology Corp. assumes no responsibility for any damage, liability or other loss resulting from the information contained herein. 5. Renesas Technology Corp. semiconductors are not designed or manufactured for use in a device or system that is used under circumstances in which human life is potentially at stake. Please contact Renesas Technology Corp. or an authorized Renesas Technology Corp. product distributor when considering the use of a product contained herein for any specific purposes, such as apparatus or systems for transportation, vehicular, medical, aerospace, nuclear, or undersea repeater use. 6. The prior written approval of Renesas Technology Corp. is necessary to reprint or reproduce in whole or in part these materials. 7. If these products or technologies are subject to the Japanese export control restrictions, they must be exported under a license from the Japanese government and cannot be imported into a country other than the approved destination. Any diversion or reexport contrary to the export control laws and regulations of Japan and/or the country of destination is prohibited. 8. Please contact Renesas Technology Corp. for further details on these materials or the products contained therein. http://www.renesas.com RENESAS SALES OFFICES Refer to "http://www.renesas.com/en/network" for the latest and detailed information. Renesas Technology America, Inc. 450 Holger Way, San Jose, CA 95134-1368, U.S.A Tel: <1> (408) 382-7500, Fax: <1> (408) 382-7501 Renesas Technology Europe Limited Dukes Meadow, Millboard Road, Bourne End, Buckinghamshire, SL8 5FH, U.K. Tel: <44> (1628) 585-100, Fax: <44> (1628) 585-900 Renesas Technology Hong Kong Ltd. 7th Floor, North Tower, World Finance Centre, Harbour City, 1 Canton Road, Tsimshatsui, Kowloon, Hong Kong Tel: <852> 2265-6688, Fax: <852> 2730-6071 Renesas Technology Taiwan Co., Ltd. 10th Floor, No.99, Fushing North Road, Taipei, Taiwan Tel: <886> (2) 2715-2888, Fax: <886> (2) 2713-2999 Renesas Technology (Shanghai) Co., Ltd. Unit2607 Ruijing Building, No.205 Maoming Road (S), Shanghai 200020, China Tel: <86> (21) 6472-1001, Fax: <86> (21) 6415-2952 Renesas Technology Singapore Pte. Ltd. 1 Harbour Front Avenue, #06-10, Keppel Bay Tower, Singapore 098632 Tel: <65> 6213-0200, Fax: <65> 6278-8001 Renesas Technology Korea Co., Ltd. Kukje Center Bldg. 18th Fl., 191, 2-ka, Hangang-ro, Yongsan-ku, Seoul 140-702, Korea Tel: <82> 2-796-3115, Fax: <82> 2-796-2145 Renesas Technology Malaysia Sdn. Bhd. Unit 906, Block B, Menara Amcorp, Amcorp Trade Centre, No.18, Jalan Persiaran Barat, 46050 Petaling Jaya, Selangor Darul Ehsan, Malaysia Tel: <603> 7955-9390, Fax: <603> 7955-9510 © 2005. Renesas Technology Corp., All rights reserved. Printed in Japan. Colophon .3.0