74LV688D

INTEGRATED CIRCUITS 74LV688 8-bit magnitude comparator Product specification Supersedes data of 1997 May 15 IC24 Data Handbook 1998 Jun 23 Philips Semiconductors Philips Semiconductors Product specification 8-bit magnitude comparator 74LV688 FEATURES • 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, • Typical VOHV (output VOH undershoot) > 2V at VCC = 3.3V, • Compare two 8-bit words • Output capability: standard • ICC category: MSI QUICK REFERENCE DATA SYMBOL tPHL/tPLH CI CPD PARAMETER Propagation delay Pn, Qn to P=Q Input capacitance Power dissipation capacitance per gate Tamb = 25°C Tamb = 25°C DESCRIPTION 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). CONDITIONS CL = 15pF VCC = 3.3V TYPICAL 17 3.5 UNIT ns pF pF VI = GND to VCC1 22 NOTE: 1. CPD is used to determine the dynamic power dissipation (PD in mW): PD = CPD × VCC2 × fi + S (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; S (CL × VCC2 × fo) = sum of outputs. ORDERING INFORMATION PACKAGES 20-Pin Plastic DIL 20-Pin Plastic SO 20-Pin Plastic SSOP Type II 20-Pin Plastic TSSOP Type I TEMPERATURE RANGE –40°C to +125°C –40°C to +125°C –40°C to +125°C –40°C to +125°C OUTSIDE NORTH AMERICA 74LV688 N 74LV688 D 74LV688 DB 74LV688 PW NORTH AMERICA 74LV688 N 74LV688 D 74LV688 DB 74LV688PW DH PKG. DWG. # SOT146-1 SOT163-1 SOT339-1 SOT360-1 PIN CONFIGURATION E P0 Q0 P1 Q1 P2 Q2 P3 Q3 1 2 3 4 5 6 7 8 9 20 19 18 17 16 15 14 13 12 11 VCC P=Q Q7 P7 Q6 P6 Q5 P5 Q4 P4 PIN DESCRIPTION PIN NO. 1 2, 4, 6, 8, 11, 13, 15, 17 3, 5, 7, 9, 12, 14, 16, 18 10 19 20 E P0 to P7 Q0 to Q7 GND P=Q VCC SYMBOL FUNCTION Enable input (active LOW) Word inputs Word inputs Ground (0V) Equal to output Positive Supply Voltage GND 10 SY00054 1998 Jun 23 2 853-1878 19618 Philips Semiconductors Product specification 8-bit magnitude comparator 74LV688 LOGIC SYMBOL 2 4 6 8 11 13 15 17 3 5 7 9 12 14 16 18 P0 P1 P2 P3 P4 P5 P6 P7 P=Q Q0 Q1 Q2 Q3 Q4 Q5 Q6 Q7 E 1 19 LOGIC DIAGRAM P7 Q7 P6 Q6 P5 Q5 P4 Q4 P3 P=Q Q3 P2 Q2 SY00055 LOGIC SYMBOL (IEEE/IEC) 1 2 4 6 8 11 13 15 17 3 5 7 9 12 14 16 18 7 Q 7 (P = Q) 1 0 19 P G1 0 P1 Q1 P0 Q0 E SY00057 FUNCTION TABLE INPUTS DATA Pn, Qn P=Q X ENABLE E L H L L OUTPUT P=Q L H H H SY00056 P>Q P VCC + 0.5V VO < –0.5 V or V0 > VCC + 0.5V –0.5V < VO < VCC +0.5V PARAMETER CONDITIONS MIN –0.5 – – MAX +7.0 ± 20 ± 50 ± 25 ± 50 +150 750 500 400 UNIT V mA mA mA mA °C Ptot 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 VI VO Tamb PARAMETER DC supply voltage DC Input voltage DC output voltage Operating ambient temperature range in free–air 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 CONDITIONS see note 1 MIN. 1.0 0 0 –40 –40 TYP. 3.3 – – – – – – – – MAX. 5.5 VCC VCC +85 +125 500 200 100 50 UNIT V V V °C tr, tf (∆t/∆v) Input rise and fall times ns/V 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 TEST CONDITIONS MIN VCC = 1.2V VIH HIGH level Input voltage VCC = 2.0V VCC = 2.7 to 3.6V VCC = 4.5 to 5.5V VCC = 1.2V VIL LOW level Input voltage VCC = 2.0V VCC = 2.7 to 3.6V VCC = 4.5 to 5.5 VCC = 1.2V; VI = VIH or VIL; –IO = 100µA HIGH level output level output voltage; all outputs all out VOH HIGH level output voltage; g STANDARD outputs VCC = 2.0V; VI = VIH or VIL; –IO = 100µA VCC = 2.7V; VI = VIH or VIL; –IO = 100µA VCC = 3.0V; VI = VIH or VIL; –IO = 100µA VCC = 4.5V; VI = VIH or VIL; –IO = 100µA VCC = 3.0V; VI = VIH or VIL; –IO = 6mA VCC = 4.5V; VI = VIH or VIL; –IO = 12mA VCC = 1.2V; VI = VIH or VIL; IO = 100µA LOW level output level output all out voltage; all outputs VOL LOW level output voltage; g STANDARD outputs II ICC ∆ICC Input leakage current Quiescent supply current; MSI Additional quiescent supply current VCC = 2.0V; VI = VIH or VIL; IO = 100µA VCC = 2.7V; VI = VIH or VIL; IO = 100µA VCC = 3.0V; VI = VIH or VIL; IO = 100µA VCC = 4.5V; VI = VIH or VIL; IO = 100µA VCC = 3.0V; VI = VIH or VIL; IO = 6mA VCC = 4.5V; VI = VIH or VIL; IO = 12mA VCC = 5.5V; VI = VCC or GND VCC = 5.5V; VI = VCC or GND; IO = 0 VCC = 2.7V to 3.6V; VI = VCC – 0.6V 1.8 2.5 2.8 4.3 2.40 3.60 1.2 2.0 2.7 3.0 4.5 2.82 4.20 0 0 0 0 0 0.25 0.35 0.2 0.2 0.2 0.2 0.40 0.55 1.0 20.0 500 0.2 0.2 0.2 0.2 0.50 0.65 1.0 160 850 µA µA µA V 1.8 2.5 2.8 4.3 2.20 3.50 V 0.9 1.4 2.0 0.7