INTEGRATED CIRCUITS 74LV688 8-bit magnitude comparator Product specification Supersedes data of 1997 May 15 IC24 Data Handbook 1998 Jun 23 Philips Semiconductors Product specification 8-bit magnitude comparator 74LV688 FEATURES DESCRIPTION • Wide operating voltage: 1.0 to 5.5V • Optimized for low voltage applications: 1.0V to 3.6V • Accepts TTL input levels between VCC = 2.7V and VCC = 3.6V • Typical VOLP (output ground bounce) < 0.8V at VCC = 3.3V, The 74LV688 is a high-speed Si-gate CMOS device, pin compatible with the 74HC/HCT688 The 74LV688 is an 8-bit magnitude comparator. It performs comparisons of two 8-bit binary or BCD words. The output provides P = Q (equal-to). Tamb = 25°C • Typical VOHV (output VOH undershoot) > 2V at VCC = 3.3V, Tamb = 25°C • Compare two 8-bit words • Output capability: standard • ICC category: MSI QUICK REFERENCE DATA SYMBOL PARAMETER tPHL/tPLH Propagation delay Pn, Qn to P=Q CI Input capacitance CPD Power dissipation capacitance per gate CONDITIONS CL = 15pF VCC = 3.3V VI = GND to VCC1 TYPICAL UNIT 17 ns 3.5 pF 22 pF NOTE: 1. CPD is used to determine the dynamic power dissipation (PD in W): PD = CPD × VCC2 × fi + (CL × VCC2 × fo) where: fi = input frequency in MHz; CL = output load capacity in pF; fo = output frequency in MHz; VCC = supply voltage in V; (CL × VCC2 × fo) = sum of outputs. ORDERING INFORMATION PACKAGES TEMPERATURE RANGE OUTSIDE NORTH AMERICA NORTH AMERICA PKG. DWG. # 20-Pin Plastic DIL –40°C to +125°C 74LV688 N 74LV688 N SOT146-1 20-Pin Plastic SO –40°C to +125°C 74LV688 D 74LV688 D SOT163-1 20-Pin Plastic SSOP Type II –40°C to +125°C 74LV688 DB 74LV688 DB SOT339-1 20-Pin Plastic TSSOP Type I –40°C to +125°C 74LV688 PW 74LV688PW DH SOT360-1 PIN CONFIGURATION PIN DESCRIPTION PIN NO. E 1 20 VCC P0 2 19 P=Q Q0 3 18 Q7 SYMBOL FUNCTION 1 E Enable input (active LOW) 2, 4, 6, 8, 11, 13, 15, 17 P0 to P7 Word inputs P1 4 17 P7 Word inputs 5 16 Q6 3, 5, 7, 9, 12, 14, 16, 18 Q0 to Q7 Q1 P2 6 15 P6 10 GND Ground (0V) Q2 7 14 Q5 19 P=Q Equal to output P3 8 13 P5 20 VCC Positive Supply Voltage Q3 9 12 Q4 GND 10 11 P4 SY00054 1998 Jun 23 2 853-1878 19618 Philips Semiconductors Product specification 8-bit magnitude comparator LOGIC SYMBOL 74LV688 LOGIC DIAGRAM 2 P0 4 P1 6 P2 8 P3 11 P4 13 P5 15 P6 17 P7 3 Q0 5 Q1 7 Q2 9 Q3 12 Q4 14 Q5 16 Q6 18 Q7 P7 Q7 P6 Q6 P=Q P5 19 Q5 P4 Q4 P3 P=Q E Q3 1 P2 SY00055 Q2 LOGIC SYMBOL (IEEE/IEC) P1 Q1 1 2 G1 0 P0 4 Q0 6 8 P 11 E 13 SY00057 15 17 7 3 0 (P = Q) 1 19 FUNCTION TABLE 5 INPUTS OUTPUT 7 9 Q 12 14 16 18 7 SY00056 DATA Pn, Qn ENABLE E P=Q P=Q L L X H H P>Q L H P<Q L H NOTES: H = HIGH voltage level L = LOW voltage level X = Don’t care 1998 Jun 23 3 Philips Semiconductors Product specification 8-bit magnitude comparator 74LV688 ABSOLUTE MAXIMUM RATINGS1, 2 In accordance with the Absolute Maximum Rating System (IEC 134). Voltages are referenced to GND (ground = 0V). PARAMETER SYMBOL VCC CONDITIONS DC supply voltage MIN MAX UNIT –0.5 +7.0 V IIK DC input diode current VI < –0.5 V or V1 > VCC + 0.5V – ± 20 mA IOK DC output diode current VO < –0.5 V or V0 > VCC + 0.5V – ± 50 mA IO DC output source or sink current – standard outputs ± 25 mA ± 50 mA –65 +150 °C – – – 750 500 400 ± IGND, ± ICC –0.5V < VO < VCC +0.5V DC VCC or GND current for types with – standard outputs Tstg Storage temperature range Ptot power dissipation per package – plastic DIL – plastic mini-pack (SO) – plastic medium-shrink SO (SSOP and TSSOP) for temperature range: –40 to +125°C above +70°C derate linearly with 12 mW/K above +70°C derate linearly with 8 mW/K above +60°C derate linearly with 5.5 mW/K mW 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 negative voltage ratings may be exceeded if the input and output clamp current ratings are observed. RECOMMENDED OPERATING CONDITIONS SYMBOL VCC PARAMETER DC supply voltage CONDITIONS see note 1 MIN MIN. TYP TYP. MAX MAX. UNIT 1.0 3.3 5.5 V VI DC Input voltage 0 – VCC V VO DC output voltage 0 – VCC V –40 –40 – – +85 +125 °C – – – – 500 200 100 50 ns/V Tamb tr, tf (∆t/∆v) Operating ambient temperature range in free–air Input rise and fall times See DC and AC characteristics VCC = 1.0V to 2.0V VCC = 2.0V to 2.7V VCC = 2.7V to 3.6V VCC = 3.6V to 5.5V NOTE: 1. The LV is guaranteed to function down to VCC = 1.0V (input levels GND or VCC); DC characteristics are guaranteed from VCC = 1.2V to VCC = 5.5V. 1998 Jun 23 4 Philips Semiconductors Product specification 8-bit magnitude comparator 74LV688 DC ELECTRICAL CHARACTERISTICS Over recommended operating conditions. Voltages are referenced to GND (ground = 0V). LIMITS SYMBOL PARAMETER -40°C to +85°C TEST CONDITIONS MIN VIH VIL HIGH level Input voltage LOW level Input voltage TYP1 HIGH level output voltage; g STANDARD outputs LOW level output voltage all outputs out uts voltage; VOL LOW level output voltage; g STANDARD outputs MIN 0.9 0.9 VCC = 2.0V 1.4 1.4 VCC = 2.7 to 3.6V 2.0 2.0 VCC = 4.5 to 5.5V 0.7VCC UNIT MAX V 0.7VCC VCC = 1.2V 0.3 0.3 VCC = 2.0V 0.6 0.6 VCC = 2.7 to 3.6V 0.8 0.8 0.3VCC 0.3VCC VCC = 1.2V; VI = VIH or VIL; –IO = 100µA VOH MAX VCC = 1.2V VCC = 4.5 to 5.5 HIGH level output voltage out uts voltage; all outputs -40°C to +125°C V 1.2 VCC = 2.0V; VI = VIH or VIL; –IO = 100µA 1.8 2.0 1.8 VCC = 2.7V; VI = VIH or VIL; –IO = 100µA 2.5 2.7 2.5 VCC = 3.0V; VI = VIH or VIL; –IO = 100µA 2.8 3.0 2.8 VCC = 4.5V; VI = VIH or VIL; –IO = 100µA 4.3 4.5 4.3 VCC = 3.0V; VI = VIH or VIL; –IO = 6mA 2.40 2.82 2.20 VCC = 4.5V; VI = VIH or VIL; –IO = 12mA 3.60 4.20 3.50 V VCC = 1.2V; VI = VIH or VIL; IO = 100µA 0 VCC = 2.0V; VI = VIH or VIL; IO = 100µA 0 0.2 0.2 VCC = 2.7V; VI = VIH or VIL; IO = 100µA 0 0.2 0.2 VCC = 3.0V; VI = VIH or VIL; IO = 100µA 0 0.2 0.2 VCC = 4.5V; VI = VIH or VIL; IO = 100µA 0 0.2 0.2 VCC = 3.0V; VI = VIH or VIL; IO = 6mA 0.25 0.40 0.50 VCC = 4.5V; VI = VIH or VIL; IO = 12mA 0.35 0.55 0.65 V Input leakage current VCC = 5.5V; VI = VCC or GND 1.0 1.0 µA ICC Quiescent supply current; MSI VCC = 5.5V; VI = VCC or GND; IO = 0 20.0 160 µA ∆ICC Additional quiescent supply current VCC = 2.7V to 3.6V; VI = VCC – 0.6V 500 850 µA II NOTE: 1. All typical values are measured at Tamb = 25°C. 1998 Jun 23 5 Philips Semiconductors Product specification 8-bit magnitude comparator 74LV688 AC CHARACTERISTICS GND = 0V; tr = tf = 2.5ns; CL = 50pF; RL = 1KΩ SYMBOL PARAMETER Propagation delay Pn, Qn to P=Q –40 to +125 °C MAX 1.2 100 – – 2.0 28 45 57 MIN MIN 2.7 20 32 40 162 26 33 4.5 to 5.5 112 18 22 1.2 50 – – 2.0 17 29 38 2.7 13 21 27 3.0 to 3.6 102 17 22 4.5 to 5.5 72 12 15 1 UNIT MAX 3.0 to 3.6 2 Propagation delay E to P=Q tPHL/tPLH –40 to +85 °C TYP1 VCC(V) tPHL/tPLH LIMITS CONDITION WAVEFORM ns ns NOTES: 1. Unless otherwise stated, all typical values are at Tamb = 25°C. 2. Typical value measured at VCC = 3.3V. 3. Typical value measured at VCC = 5.0V. AC WAVEFORMS TEST CIRCUIT VM = 1.5V at VCC w 2.7V; VM = 0.5 VCC at VCC t 2.7V. VOL and VOH are the typical output voltage drop that occur with the output load. Vcc VI Vl E INPUT VO PULSE GENERATOR VM D.U.T. 50pF RT GND tPLH CL RL= 1k tPHL VOH Test Circuit for Outputs P = Q OUTPUT VM DEFINITIONS RL = Load resistor VOL CL = Load capacitance includes jig and probe capacitiance RT = Termination resistance should be equal to ZOUT of pulse generators. SV00195 Waveform 1. Propagation delays from the enable input (E) to the equal-to output (P = Q). TEST tPLH/tPHL Pn, Qn INPUT VCC VI < 2.7V VCC 2.7–3.6V 2.7V ≥ 4.5 V VCC VM VM SV00902 Waveform 3. tPHL P = Q OUTPUT tPLH VM VM SV00194 Waveform 2. 1998 Jun 23 Propagation delays from the inputs (Pn, Qn) to the equal-to output (P = Q). 6 Load circuitry for switching times Philips Semiconductors Product specification 8-bit magnitude comparator 74LV688 APPLICATION INFORMATION Two or more “688” 8-bit magnitude comparators may be cascaded to compare binary or BCD numbers of more than 8 bits. An An-1 688 688 A0 A=B 688 A=B A=B OUTPUT Bn 8 MSB Bn-1 B0 ENABLE INPUT ENABLE INPUT 8 LSB ENABLE INPUT SV00196 Waveform 4. 1998 Jun 23 Binary or BCD comparator 7 Philips Semiconductors Product specification 8-bit magnitude comparator 74LV688 DIP20: plastic dual in-line package; 20 leads (300 mil) 1998 Jun 23 SOT146-1 8 Philips Semiconductors Product specification 8-bit magnitude comparator 74LV688 SO20: plastic small outline package; 20 leads; body width 7.5 mm 1998 Jun 23 9 SOT163-1 Philips Semiconductors Product specification 8-bit magnitude comparator 74LV688 SSOP20: plastic shrink small outline package; 20 leads; body width 5.3 mm 1998 Jun 23 10 SOT339-1 Philips Semiconductors Product specification 8-bit magnitude comparator 74LV688 TSSOP20: plastic thin shrink small outline package; 20 leads; body width 4.4 mm 1998 Jun 23 11 SOT360-1 Philips Semiconductors Product specification 8-bit magnitude comparator 74LV688 DEFINITIONS Data Sheet Identification Product Status Definition Objective Specification Formative or in Design This data sheet contains the design target or goal specifications for product development. Specifications may change in any manner without notice. Preliminary Specification Preproduction Product This data sheet contains preliminary data, and supplementary data will be published at a later date. Philips Semiconductors reserves the right to make changes at any time without notice in order to improve design and supply the best possible product. Product Specification Full Production This data sheet contains Final Specifications. Philips Semiconductors reserves the right to make changes at any time without notice, in order to improve design and supply the best possible product. Philips Semiconductors and Philips Electronics North America Corporation reserve 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. Applications that are described herein for any of these products are for illustrative purposes only. Philips Semiconductors makes no representation or warranty that such applications will be suitable for the specified use without further testing or modification. LIFE SUPPORT APPLICATIONS Philips Semiconductors and Philips Electronics North America Corporation Products are not designed for use in life support appliances, devices, or systems where malfunction of a Philips Semiconductors and Philips Electronics North America Corporation Product can reasonably be expected to result in a personal injury. Philips Semiconductors and Philips Electronics North America Corporation customers using or selling Philips Semiconductors and Philips Electronics North America Corporation Products for use in such applications do so at their own risk and agree to fully indemnify Philips Semiconductors and Philips Electronics North America Corporation for any damages resulting from such improper use or sale. Copyright Philips Electronics North America Corporation 1998 All rights reserved. Printed in U.S.A. Philips Semiconductors 811 East Arques Avenue P.O. Box 3409 Sunnyvale, California 94088–3409 Telephone 800-234-7381 print code Document order number: 1998 Jun 23 12 Date of release: 05-96 9397-750-04456