[ /Title (CD74 HC280 , CD74 HCT28 0) /Subject (High Speed CMOS Logic 9-Bit Odd/E ven Parity Data sheet acquired from Harris Semiconductor SCHS175 November 1997 CD74HC280, CD74HCT280 High Speed CMOS Logic 9-Bit Odd/Even Parity Generator/Checker Features at VCC = 5V • HCT Types - 4.5V to 5.5V Operation - Direct LSTTL Input Logic Compatibility, VIL= 0.8V (Max), VIH = 2V (Min) - CMOS Input Compatibility, Il ≤ 1µA at VOL, VOH • Typical Propagation Delay = 17ns at VCC = 5V, CL = 15pF, TA = 25oC • Replaces 74LS180 Types • Easily Cascadable • Fanout (Over Temperature Range) - Standard Outputs . . . . . . . . . . . . . . . 10 LSTTL Loads - Bus Driver Outputs . . . . . . . . . . . . . 15 LSTTL Loads Description The Harris CD74HC280 and CD74HCT280 are 9-bit odd/even parity, generator checker devices. Both even and odd parity outputs are available for checking or generating parity for words up to nine bits long. Even parity is indicated (ΣE output is high) when an even number of data inputs is high. Odd parity is indicated (ΣO output is high) when an odd number of data inputs is high. Parity checking for words larger than 9 bits can be accomplished by tying the ΣE output to any input of an additional HC/HCT280 parity checker. • Wide Operating Temperature Range . . . -55oC to 125oC • Balanced Propagation Delay and Transition Times • Significant Power Reduction Compared to LSTTL Logic ICs • HC Types - 2V to 6V Operation - High Noise Immunity: NIL = 30%, NIH = 30% of VCC Ordering Information Pinout Functional Diagram CD74HC280, CD74HCT280 (PDIP) TOP VIEW I0 I1 I6 1 14 VCC I7 2 13 I5 I2 NC 3 12 I4 I3 I8 4 11 I3 I4 ΣE 5 10 I2 ΣO 6 9 I1 GND 7 8 I0 8 9 10 5 11 12 I5 I6 I7 I8 6 13 © Harris Corporation 1997 1 ∑ ODD 1 2 4 CAUTION: These devices are sensitive to electrostatic discharge. Users should follow proper IC Handling Procedures. Copyright ∑ EVEN GND = 7 VCC = 14 NC = 3 File Number 1669.1 CD74HC280, CD74HCT280 Absolute Maximum Ratings Thermal Information DC Supply Voltage, VCC . . . . . . . . . . . . . . . . . . . . . . . . -0.5V to 7V DC Input Diode Current, IIK For VI < -0.5V or VI > VCC + 0.5V . . . . . . . . . . . . . . . . . . . . . .±20mA DC Output Diode Current, IOK For VO < -0.5V or VO > VCC + 0.5V . . . . . . . . . . . . . . . . . . . .±20mA DC Drain Current, per Output, IO For -0.5V < VO < VCC + 0.5V. . . . . . . . . . . . . . . . . . . . . . . . . .±25mA DC Output Source or Sink Current per Output Pin, IO For VO > -0.5V or VO < VCC + 0.5V . . . . . . . . . . . . . . . . . . . .±25mA DC VCC or Ground Current, ICC . . . . . . . . . . . . . . . . . . . . . . . . .±50mA Thermal Resistance (Typical, Note 3) θJA (oC/W) PDIP Package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90 SOIC Package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 175 Maximum Junction Temperature . . . . . . . . . . . . . . . . . . . . . . . 150oC Maximum Storage Temperature Range . . . . . . . . . .-65oC to 150oC Maximum Lead Temperature (Soldering 10s) . . . . . . . . . . . . . 300oC (SOIC - Lead Tips Only) Operating Conditions Temperature Range, TA . . . . . . . . . . . . . . . . . . . . . . -55oC to 125oC Supply Voltage Range, VCC HC Types . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2V to 6V HCT Types . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4.5V to 5.5V DC Input or Output Voltage, VI, VO . . . . . . . . . . . . . . . . . 0V to VCC Input Rise and Fall Time 2V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1000ns (Max) 4.5V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 500ns (Max) 6V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 400ns (Max) CAUTION: Stresses above those listed in “Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress only rating and operation of the device at these or any other conditions above those indicated in the operational sections of this specification is not implied. NOTE: 3. θJA is measured with the component mounted on an evaluation PC board in free air. DC Electrical Specifications TEST CONDITIONS PARAMETER SYMBOL VI (V) VIH - 25oC IO (mA) VCC (V) -40oC TO 85oC -55oC TO 125oC MIN TYP MAX MIN MAX MIN MAX UNITS 2 1.5 - - 1.5 - 1.5 - V 4.5 3.15 - - 3.15 - 3.15 - V 6 4.2 - - 4.2 - 4.2 - V HC TYPES High Level Input Voltage Low Level Input Voltage High Level Output Voltage CMOS Loads VIL VOH - VIH or VIL High Level Output Voltage TTL Loads Low Level Output Voltage CMOS Loads VOL VIH or VIL Low Level Output Voltage TTL Loads Input Leakage Current Quiescent Device Current - - 2 - - 0.5 - 0.5 - 0.5 V 4.5 - - 1.35 - 1.35 - 1.35 V 6 - - 1.8 - 1.8 - 1.8 V -0.02 2 1.9 - - 1.9 - 1.9 - V -0.02 4.5 4.4 - - 4.4 - 4.4 - V -0.02 6 5.9 - - 5.9 - 5.9 - V -4 4.5 3.98 - - 3.84 - 3.7 - V -5.2 6 5.48 - - 5.34 - 5.2 - V 0.02 2 - - 0.1 - 0.1 - 0.1 V 0.02 4.5 - - 0.1 - 0.1 - 0.1 V 0.02 6 - - 0.1 - 0.1 - 0.1 V 4 4.5 - - 0.26 - 0.33 - 0.4 V 5.2 6 - - 0.26 - 0.33 - 0.4 V II VCC or GND - 6 - - ±0.1 - ±1 - ±1 µA ICC VCC or GND 0 6 - - 8 - 80 - 160 µA 2 CD74HC280, CD74HCT280 DC Electrical Specifications (Continued) TEST CONDITIONS SYMBOL VI (V) High Level Input Voltage VIH - - Low Level Input Voltage VIL - High Level Output Voltage CMOS Loads VOH VIH or VIL PARAMETER 25oC IO (mA) VCC (V) -40oC TO 85oC -55oC TO 125oC MIN TYP MAX MIN MAX MIN MAX UNITS 4.5 to 5.5 2 - - 2 - 2 - V - 4.5 to 5.5 - - 0.8 - 0.8 - 0.8 V -0.02 4.5 4.4 - - 4.4 - 4.4 - V -4 4.5 3.98 - - 3.84 - 3.7 - V 0.02 4.5 - - 0.1 - 0.1 - 0.1 V 4 4.5 - - 0.26 - 0.33 - 0.4 V HCT TYPES High Level Output Voltage TTL Loads Low Level Output Voltage CMOS Loads VOL VIH or VIL Low Level Output Voltage TTL Loads Input Leakage Current Quiescent Device Current Additional Quiescent Device Current Per Input Pin: 1 Unit Load (Note 4) II VCC to GND 0 5.5 - - ±0.1 - ±1 - ±1 µA ICC VCC or GND 0 5.5 - - 8 - 80 - 160 µA ∆ICC VCC -2.1 - 4.5 to 5.5 - 100 360 - 450 - 490 µA NOTE: 4. For dual-supply systems theoretical worst case (VI = 2.4V, VCC = 5.5V) specification is 1.8mA. HCT Input Loading Table INPUT UNIT LOADS All 1 NOTE: Unit Load is ∆ICC limit specified in DC Electrical Specifications table, e.g., 360µA max at 25oC. Switching Specifications PARAMETER Input tr, tf = 6ns SYMBOL TEST CONDITIONS tPLH, tPHL CL = 50pF 25oC -40oC TO 85oC -55oC TO 125oC VCC (V) TYP MAX MAX MAX UNITS 2 - 200 250 300 ns 4.5 - 40 50 60 ns 6 - 34 43 51 ns 5 17 - - - ns HC TYPES Propagation Delay, Any Input to ΣO CL = 15pF 3 CD74HC280, CD74HCT280 Switching Specifications SYMBOL TEST CONDITIONS tPLH, tPHL CL = 50pF PARAMETER Propagation Delay, Any Input to ΣE Input tr, tf = 6ns (Continued) Output Transition Time tTLH, tTHL 25oC -40oC TO 85oC -55oC TO 125oC VCC (V) TYP MAX MAX MAX UNITS 2 - 200 250 300 ns 4.5 - 40 50 60 ns 6 - 34 43 51 ns CL = 15pF 5 17 - - - ns CL = 50pF 2 - 75 95 110 ns 4.5 - 15 19 22 ns 6 - 13 16 19 ns Input Capacitance CI - - - 10 10 10 pF Power Dissipation Capacitance (Notes 5, 6) CPD - 5 58 - - - pF CL = 50pF 4.5 - 45 56 68 ns CL = 15pF 5 19 - - - ns CL = 50pF 4.5 - 42 53 63 ns CL = 15pF 5 18 - - - ns CL = 50pF 4.5 - 15 19 22 ns HCT TYPES Propagation Delay, Any Input to ΣO tPLH, tPHL Propagation Delay, Any Input to ΣE tPLH, tPHL Output Transition Time tTLH, tTHL Input Capacitance CIN - - - 10 10 10 pF Power Dissipation Capacitance (Notes 5, 6) CPD - 5 58 - - - pF NOTES: 5. CPD is used to determine the dynamic power consumption, per package. 6. PD = VCC2 fi (CPD + CL) where fi = Input Frequency, fO = Output Frequency, CL = Output Load Capacitance, VCC = Supply Voltage. Test Circuits and Waveforms tr = 6ns tf = 6ns 90% 50% 10% INPUT GND tTLH GND tTHL 90% 50% 10% INVERTING OUTPUT 3V 2.7V 1.3V 0.3V INPUT tTHL tPHL tf = 6ns tr = 6ns VCC tTLH 90% 1.3V 10% INVERTING OUTPUT tPHL tPLH FIGURE 1. HC TRANSITION TIMES AND PROPAGATION DELAY TIMES, COMBINATION LOGIC tPLH FIGURE 2. HCT TRANSITION TIMES AND PROPAGATION DELAY TIMES, COMBINATION LOGIC 4 IMPORTANT NOTICE Texas Instruments and its subsidiaries (TI) reserve the right to make changes to their products or to discontinue any product or service without notice, and advise customers to obtain the latest version of relevant information to verify, before placing orders, that information being relied on is current and complete. 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