CD74AC257, CD74ACT257, CD74ACT258 Data sheet acquired from Harris Semiconductor SCHS248 Quad 2-Input Multiplexer with Three-State Outputs August 1998 Features Description • CD74AC257, CD74ACT257 . . . . Non-Inverting Outputs The CD74AC257, CD74ACT257 and CD74ACT258 are quad 2-input multiplexers with three-state outputs that utilize the Harris Advanced CMOS Logic technology. Each of these devices selects four bits of data from two sources under the control of a common Select input (S). The Output Enable (OE) is active LOW. When OE is HIGH, all of the outputs (Y or Y) are in the high-impedance state regardless of all other input conditions. • CD74ACT258 . . . . . . . . . . . . . . . . . . . Inverting Outputs • Buffered Inputs • Typical Propagation Delay - 4.4ns at VCC = 5V, TA = 25oC, CL = 50pF • Exceeds 2kV ESD Protection MIL-STD-883, Method 3015 Moving data from two groups of registers to four common output buses is a common use of the CD74AC257, CD74ACT257 and CD74ACT258. The state of the Select input determines the particular register from which the data comes. The CD74AC257, CD74ACT257 and CD74ACT258 can also be used as function generators. • SCR-Latchup-Resistant CMOS Process and Circuit Design • Speed of Bipolar FAST™/AS/S with Significantly Reduced Power Consumption • Balanced Propagation Delays Ordering Information • AC Types Feature 1.5V to 5.5V Operation and Balanced Noise Immunity at 30% of the Supply PART NUMBER • ±24mA Output Drive Current - Fanout to 15 FAST™ ICs CD74AC257, CD74ACT257, CD74ACT258 (PDIP, SOIC) 0 to 70oC, -40 to 85, 16 Ld PDIP -55 to 125 E16.3 CD74ACT257E 0 to 70oC, -40 to 85, 16 Ld PDIP -55 to 125 E16.3 CD74ACT258E 0 to 70oC, -40 to 85, 16 Ld PDIP -55 to 125 E16.3 CD74AC257M 0 to 70oC, -40 to 85, 16 Ld SOIC -55 to 125 M16.15 CD74ACT257M 0 to 70oC, -40 to 85, 16 Ld SOIC -55 to 125 M16.15 CD74ACT258M 0 to 70oC, -40 to 85, 16 Ld SOIC -55 to 125 M16.15 TOP VIEW ACT258 S AC/ACT257 S 1 AC/ACT257 16 VCC ACT258 VCC 1I0 1I0 2 15 OE OE 1I1 1I1 3 14 4I0 4I0 1Y 1Y 4 13 4I1 4I1 2I0 2I0 5 12 4Y 4Y 2I1 2I1 6 11 3I0 3I0 2Y 2Y 7 10 3I1 3I1 GND GND 8 9 3Y 3Y NOTES: 1. When ordering, use the entire part number. Add the suffix 96 to obtain the variant in the tape and reel. 2. Wafer and die for this part number is available which meets all electrical specifications. Please contact your local sales office or Harris customer service for ordering information. CAUTION: These devices are sensitive to electrostatic discharge. Users should follow proper IC Handling Procedures. FAST™ is a Trademark of Fairchild Semiconductor. Copyright © Harris Corporation 1998 PKG. NO. PACKAGE CD74AC257E Drives 50Ω Transmission Lines Pinout TEMP. RANGE (oC) 1 File Number 1955.1 CD74AC257, CD74ACT257, CD74ACT258 Functional Diagram AC/ACT AC/ACT 257 258 1I0 2I0 3I0 4I0 1I1 2I1 3I1 4I1 2 4 5 1Y 1Y 2Y 2Y 3Y 3Y 4Y 4Y 11 7 14 3 9 6 10 12 13 1 15 S OE TRUTH TABLE OUTPUT ENABLE SELECT INPUT 257 OUTPUTS 258 OUTPUTS OE S I0 I1 Y Y H X X X Z Z L L L X L H L L H X H L L H X L L H L H X H H L DATA INPUTS H = High level voltage, L = Low level voltage, Z = High impedance (off) state, X = Don’t Care 2 CD74AC257, CD74ACT257, CD74ACT258 Absolute Maximum Ratings Thermal Information DC Supply Voltage, VCC . . . . . . . . . . . . . . . . . . . . . . . . -0.5V to 6V 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 . . . . . . . . . . . . . . . . . . . .±50mA DC Output Source or Sink Current per Output Pin, IO For VO > -0.5V or VO < VCC + 0.5V . . . . . . . . . . . . . . . . . . . .±50mA DC VCC or Ground Current, ICC or IGND (Note 3) . . . . . . . . .±100mA Thermal Resistance (Typical, Note 5) θJA (oC/W) PDIP Package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ___ SOIC Package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ___ Maximum Junction Temperature (Plastic Package) . . . . . . . . . . 150oC Maximum Storage Temperature Range . . . . . . . . . .-65oC to 150oC Maximum Lead Temperature (Soldering 10s) . . . . . . . . . . . . . 300oC Operating Conditions Temperature Range, TA . . . . . . . . . . . . . . . . . . . . . . -55oC to 125oC Supply Voltage Range, VCC (Note 4) AC Types. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1.5V to 5.5V ACT Types . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4.5V to 5.5V DC Input or Output Voltage, VI, VO . . . . . . . . . . . . . . . . . 0V to VCC Input Rise and Fall Slew Rate, dt/dv AC Types, 1.5V to 3V . . . . . . . . . . . . . . . . . . . . . . . . . 50ns (Max) AC Types, 3.6V to 5.5V . . . . . . . . . . . . . . . . . . . . . . . . 20ns (Max) ACT Types, 4.5V to 5.5V. . . . . . . . . . . . . . . . . . . . . . . 10ns (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. NOTES: 3. For up to 4 outputs per device, add ±25mA for each additional output. 4. Unless otherwise specified, all voltages are referenced to ground. 5. θJA is measured with the component mounted on an evaluation PC board in free air. DC Electrical Specifications TEST CONDITIONS PARAMETER -40oC TO 85oC 25oC -55oC TO 125oC SYMBOL VI (V) IO (mA) VCC (V) MIN MAX MIN MAX MIN MAX UNITS VIH - - 1.5 1.2 - 1.2 - 1.2 - V 3 2.1 - 2.1 - 2.1 - V AC TYPES High Level Input Voltage Low Level Input Voltage High Level Output Voltage VIL VOH - VIH or VIL 5.5 3.85 - 3.85 - 3.85 - V 1.5 - 0.3 - 0.3 - 0.3 V 3 - 0.9 - 0.9 - 0.9 V 5.5 - 1.65 - 1.65 - 1.65 V -0.05 1.5 1.4 - 1.4 - 1.4 - V -0.05 3 2.9 - 2.9 - 2.9 - V -0.05 4.5 4.4 - 4.4 - 4.4 - V -4 3 2.58 - 2.48 - 2.4 - V -24 4.5 3.94 - 3.8 - 3.7 - V -75 (Note 6, 7) 5.5 - - 3.85 - - - V -50 (Note 6, 7) 5.5 - - - - 3.85 - V - 3 CD74AC257, CD74ACT257, CD74ACT258 DC Electrical Specifications (Continued) TEST CONDITIONS PARAMETER Low Level Output Voltage -40oC TO 85oC 25oC -55oC TO 125oC SYMBOL VI (V) IO (mA) VCC (V) MIN MAX MIN MAX MIN MAX UNITS VOL VIH or VIL 0.05 1.5 - 0.1 - 0.1 - 0.1 V 0.05 3 - 0.1 - 0.1 - 0.1 V 0.05 4.5 - 0.1 - 0.1 - 0.1 V 12 3 - 0.36 - 0.44 - 0.5 V 24 4.5 - 0.36 - 0.44 - 0.5 V 75 (Note 6, 7) 5.5 - - - 1.65 - - V 50 (Note 6, 7) 5.5 - - - - - 1.65 V Input Leakage Current II VCC or GND - 5.5 - ±0.1 - ±1 - ±1 µA Three-State Leakage Current IOZ VIH or VIL VO = VCC or GND - 5.5 - ±0.5 - ±5 - ±10 µA Quiescent Supply Current MSI ICC VCC or GND 0 5.5 - 8 - 80 - 160 µA High Level Input Voltage VIH - - 4.5 to 5.5 2 - 2 - 2 - V Low Level Input Voltage VIL - - 4.5 to 5.5 - 0.8 - 0.8 - 0.8 V High Level Output Voltage VOH VIH or VIL -0.05 4.5 4.4 - 4.4 - 4.4 - V -24 4.5 3.94 - 3.8 - 3.7 - V -75 (Note 6, 7) 5.5 - - 3.85 - - - V -50 (Note 6, 7) 5.5 - - - - 3.85 - V ACT TYPES Low Level Output Voltage VOL VIH or VIL 0.05 4.5 - 0.1 - 0.1 - 0.1 V 24 4.5 - 0.36 - 0.44 - 0.5 V 75 (Note 6, 7) 5.5 - - - 1.65 - - V 50 (Note 6, 7) 5.5 - - - - - 1.65 V II VCC or GND - 5.5 - ±0.1 - ±1 - ±1 µA Three-State or Leakage Current IOZ VIH or VIL VO = VCC or GND - 5.5 - ±0.5 - ±5 - ±10 µA Quiescent Supply Current MSI ICC VCC or GND 0 5.5 - 8 - 80 - 160 µA ∆ICC VCC -2.1 - 4.5 to 5.5 - 2.4 - 2.8 - 3 mA Input Leakage Current Additional Supply Current per Input Pin TTL Inputs High 1 Unit Load NOTES: 6. Test one output at a time for a 1-second maximum duration. Measurement is made by forcing current and measuring voltage to minimize power dissipation. 7. Test verifies a minimum 50Ω transmission-line-drive capability at 85oC, 75Ω at 125oC. 4 CD74AC257, CD74ACT257, CD74ACT258 ACT Input Load Table INPUT UNIT LOAD Data 0.83 S 1.27 OE 1.27 NOTE: Unit load is ∆ICC limit specified in DC Electrical Specifications Table, e.g., 2.4mA max at 25oC. Switching Specifications Input tr, tf = 3ns, CL = 50pF (Worst Case) -40oC TO 85oC PARAMETER -55oC TO 125oC SYMBOL VCC (V) MIN TYP MAX MIN TYP MAX UNITS tPLH, tPHL 1.5 - - 106 - - 117 ns 3.3 (Note 9) 3.3 - 11.8 3.3 - 13 ns 5 (Note 10) 2.4 - 8.5 2.3 - 9.3 ns 1.5 - - 153 - - 168 ns 3.3 4.8 - 17.1 4.7 - 18.8 ns 5 3.5 - 12.2 3.4 - 13.4 ns 1.5 - - 167 - - 184 ns 3.3 5.3 - 18.7 5.2 - 20.6 ns 5 3.8 - 13.4 3.7 - 14.7 ns 1.5 - - 91 - - 100 ns 3.3 2.9 - 10.2 2.8 - 11.2 ns 5 2.1 - 7.3 2 - 8 ns 1.5 - - 153 - - 168 ns 3.3 4.8 - 17.1 4.7 - 18.8 ns 5 3.5 - 12.2 3.4 - 13.4 ns 1.5 - - 167 - - 184 ns 3.3 5.3 - 18.7 5.2 - 20.6 ns 5 3.8 - 13.4 3.7 - 14.7 ns AC TYPES Propagation Delay, In to Y CD74AC/ACT257 Propagation Delay, S to Y CD74AC/ACT257 Propagation Delay, OE to Y CD74AC/ACT257 Propagation Delay, In to Y CD74AC/ACT258 Propagation Delay, S to Y CD74AC/ACT258 Propagation Delay, OE to Y CD74AC/ACT258 tPLH, tPHL tPLZ, tPHZ, tPZL, tPZH tPLH, tPHL tPLH, tPHL tPLZ, tPHZ, tPZL, tPZH Three-State Output Capacitance CO - - - 15 - - 15 pF Input Capacitance CI - - - 10 - - 10 pF CPD (Note 11) - - 130 - - 130 - pF Propagation Delay, In to Y CD74AC/ACT257 tPLH, tPHL 5 (Note 10) 2.8 - 9.7 2.7 - 10.7 ns Propagation Delay, S to Y CD74AC/ACT257 tPLH, tPHL 5 4 - 14 3.9 - 15.4 ns Power Dissipation Capacitance ACT TYPES 5 CD74AC257, CD74ACT257, CD74ACT258 Switching Specifications Input tr, tf = 3ns, CL = 50pF (Worst Case) (Continued) -40oC TO 85oC -55oC TO 125oC SYMBOL VCC (V) MIN TYP MAX MIN TYP MAX UNITS Propagation Delay, OE to Y CD74AC/ACT257 tPLZ, tPHZ, tPZL, tPZH 5 4.1 - 14.6 4 - 16.1 ns Propagation Delay, In to Y CD74AC/ACT258 tPLH, tPHL 5 2.4 - 8.5 2.3 - 9.3 ns Propagation Delay, S to Y CD74AC/ACT258 tPLH, tPHL 5 4 - 14 3.9 - 15.4 ns Propagation Delay, OE to Y CD74AC/ACT258 tPLZ, tPHZ, tPZL, tPZH 5 4.1 - 14.6 4 - 16.1 ns Three-State Output Capacitance CO - - - 15 - - 15 pF Input Capacitance CI - - - 10 - - 10 pF CPD (Note 11) - - 130 - - 130 - pF PARAMETER Power Dissipation Capacitance NOTES: 8. Limits tested 100%. 9. 3.3V Min is at 3.6V, Max is at 3V. 10. 5V Min is at 5.5V, Max is at 4.5V. 11. CPD is used to determine the dynamic power consumption per multiplexer. AC: PD = CPD VCC2 fi + ∑ (CL VCC2 fo) ACT: PD = CPD VCC2 fi + ∑ (CL VCC2 fo) + VCC ∆ICC where fi = input frequency, fo = output frequency, CL = output load capacitance, VCC = supply voltage. tr = 3ns tf = 3ns INPUT LEVEL 90% OUTPUT DISABLE VS 10% GND tPZL tPLZ VS 0.2VCC OUTPUT: LOW TO OFF TO LOW tPHZ tPZH 0.8 VCC VS OUTPUT: HIGH TO OFF TO HIGH OUTPUTS ENABLED OTHER INPUTS (TIED HIGH OR LOW) OUTPUT DISABLE OUTPUTS DISABLED 500Ω† RL DUT WITH THREESTATE OUTPUT CL 50pF VOL (≠GND) VOH (≠VCC) OUTPUTS ENABLED GND (tPHZ, tPZH) OPEN (tPHL, tPLH) 2 VCC (tPLZ, tPZL) (OPEN DRAIN) OUT 500Ω† RL †FOR AC SERIES ONLY: WHEN VCC = 1.5V, RL = 1kΩ FIGURE 1. THREE-STATE PROPAGATION DELAY TIMES AND TEST CIRCUIT 6 CD74AC257, CD74ACT257, CD74ACT258 tr = 3ns tf = 3ns INPUT LEVEL nI0, nI1, S VS VS S 10% tPLH tPHL tPLH INPUT LEVEL 90% GND Y tPHL VS VS Y FIGURE 2. INPUTS OR SELECT TO OUTPUT PROPAGATION DELAYS (AC/ACT257) FIGURE 3. SELECT TO OUTPUT PROPAGATION DELAYS (ACT258) OUTPUT RL (NOTE) 500Ω DUT OUTPUT LOAD CL 50pF NOTE: For AC Series Only: When VCC = 1.5V, RL = 1kΩ. CD74AC CD74ACT VCC 3V Input Switching Voltage, VS 0.5 VCC 1.5V Output Switching Voltage, VS 0.5 VCC 0.5 VCC Input Level FIGURE 4. PROPAGATION DELAY TIMES 7 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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