74F258APC

Revised January 2004 74F258A Quad 2-Input Multiplexer with 3-STATE Outputs General Description Features The 74F258A is a quad 2-input multiplexer with 3-STATE outputs. Four bits of data from two sources can be selected using a common data select input. The four outputs present the selected data in the complement (inverted) form. The outputs may be switched to a high impedance state with a HIGH on the common Output Enable (OE) input, allowing the outputs to interface directly with bus-oriented systems. ■ Multiplexer expansion by tying outputs together ■ Inverting 3-STATE outputs Ordering Code: Order Number 74F258ASC Package Number M16A Package Description 16-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-012, 0.150" Narrow Logic Symbols Connection Diagram IEEE/IEC © 2004 Fairchild Semiconductor Corporation DS009508 www.fairchildsemi.com 74F258A Quad 2-Input Multiplexer with 3-STATE Outputs April 1988 74F258A Unit Loading/Fan Out Pin Names Description U.L. Input IIH/IIL HIGH/LOW Output IOH/IOL S Common Data Select Input 1.0/1.0 20 µA/−0.6 mA OE 3-STATE Output Enable Input (Active LOW) 1.0/1.0 20 µA/−0.6 mA I0a–I0d Data Inputs from Source 0 1.0/1.0 20 µA/−0.6 mA I1a–I1d Data Inputs from Source 1 1.0/1.0 20 µA/−0.6 mA Za–Zd 3-STATE Inverting Data Outputs 150/40 (33.3) −3 mA/24 mA (20 mA) Functional Description Truth Table Output Select The 74F258A is a quad 2-input multiplexer with 3-STATE outputs. It selects four bits of data from two sources under control of a common Select input (S). When the Select input is LOW, the I0x inputs are selected and when Select is HIGH, the I1x inputs are selected. The data on the selected inputs appears at the outputs in inverted form. The 74F258A is the logic implementation of a 4-pole, 2position switch where the position of the switch is determined by the logic levels supplied to the Select input. The logic equation for the outputs is shown below: Data Output Enable Input Inputs OE S I0 I1 H X X X Z L H X L H L H X H L L L L X H L L H X L Z Z n = OE • (I1n • S + I0n • S) When the Output Enable input (OE) is HIGH, the outputs are forced to a high impedance OFF state. If the outputs of the 3-STATE devices are tied together, all but one device must be in the high impedance state to avoid high currents that would exceed the maximum ratings. Designers should ensure that Output Enable signals to 3-STATE devices whose outputs are tied together are designed so there is no overlap. H = HIGH Voltage Level L = LOW Voltage Level X = Immaterial Z = High Impedance Logic Diagram Please note that this diagram is provided only for the understanding of logic operations and should not be used to estimate propagation delays. www.fairchildsemi.com 2 Recommended Operating Conditions Storage Temperature −65°C to +150°C Ambient Temperature under Bias −55°C to +125°C Free Air Ambient Temperature Junction Temperature under Bias −55°C to +150°C Supply Voltage 0°C to +70°C +4.5V to +5.5V −0.5V to +7.0V VCC Pin Potential to Ground Pin Input Voltage (Note 2) −0.5V to +7.0V Input Current (Note 2) −30 mA to +5.0 mA Voltage Applied to Output in HIGH State (with VCC = 0V) Standard Output −0.5V to VCC 3-STATE Output −0.5V to +5.5V Note 1: Absolute maximum ratings are values beyond which the device may be damaged or have its useful life impaired. Functional operation under these conditions is not implied. Current Applied to Output in LOW State (Max) Note 2: Either voltage limit or current limit is sufficient to protect inputs. twice the rated IOL (mA) ESD Last Passing Voltage (Min) 4000V DC Electrical Characteristics Symbol Parameter Min Typ Max Input HIGH Voltage VIL Input LOW Voltage 0.8 V VCD Input Clamp Diode Voltage −1.2 V VOH Output HIGH 10% VCC 2.5 Voltage 10% VCC 2.4 5% VCC 2.7 5% VCC 2.7 VOL Output LOW Voltage IIH Input HIGH 2.0 Units VIH Input HIGH Current Output HIGH Leakage Current VID Input Leakage Test Recognized as a LOW Signal Min IIN = −18 mA IOH = −3 mA V Min 0.5 V Min IOL = 24 mA 5.0 µA Max VIN = 2.7V 7.0 µA Max VIN = 7.0V 50 µA Max VOUT = VCC V 0.0 3.75 µA 0.0 −0.6 mA Max VIN = 0.5V IOH = −1 mA IOH = −3 mA 10% VCC Breakdown Test ICEX Conditions Recognized as a HIGH Signal IOH = −1 mA Current IBVI VCC V 4.75 IID = 1.9 µA All Other Pins Grounded VIOD = 150 mV IOD Output Leakage IIL Input LOW Current IOZH Output Leakage Current 50 µA Max VOUT = 2.7V IOZL Output Leakage Current −50 µA Max VOUT = 0.5V IOS Output Short-Circuit Current −150 mA Max VOUT = 0V IZZ Bus Drainage Test 500 µA 0.0V VOUT = VCC ICCH Power Supply Current 6.2 9.5 mA Max VO = HIGH ICCL Power Supply Current 15.1 23 mA Max VO = LOW ICCZ Power Supply Current 11.3 17 mA Max VO = HIGH Z Circuit Current −60 3 All Other Pins Grounded www.fairchildsemi.com 74F258A Absolute Maximum Ratings(Note 1) 74F258A AC Electrical Characteristics Symbol Parameter Min TA = +25°C TA = −5°C to +125°C TA = 0°C to +70°C VCC = +5.0V VCC = 5.0V VCC = 5.0V CL = 50 pF CL = 50 pF CL = 50 pF Max Min Max Min tPLH Propagation Delay 2.5 Typ 5.3 2.0 7.5 2.0 6.0 tPHL In to Z n 1.0 4.0 1.0 6.0 1.0 5.0 Max tPLH Propagation Delay 3.0 7.5 3.0 9.5 3.0 8.5 tPHL S to Z n 2.5 7.0 2.5 9.0 2.5 8.0 tPZH Output Enable Time 2.0 6.0 2.0 8.0 2.0 7.0 2.5 7.0 2.5 9.0 2.5 8.0 tPZL tPHZ Output Disable Time tPLZ www.fairchildsemi.com 2.0 6.0 1.5 7.0 2.0 7.0 2.0 6.0 2.0 8.5 2.0 7.0 4 Units ns ns ns 16-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-012, 0.150" Narrow Package Number M16A Fairchild does not assume any responsibility for use of any circuitry described, no circuit patent licenses are implied and Fairchild reserves the right at any time without notice to change said circuitry and specifications. LIFE SUPPORT POLICY FAIRCHILD’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT OF FAIRCHILD SEMICONDUCTOR CORPORATION. As used herein: 2. A critical component in any component of a life support device or system whose failure to perform can be reasonably expected to cause the failure of the life support device or system, or to affect its safety or effectiveness. 1. Life support devices or systems are devices or systems which, (a) are intended for surgical implant into the body, or (b) support or sustain life, and (c) whose failure to perform when properly used in accordance with instructions for use provided in the labeling, can be reasonably expected to result in a significant injury to the user. www.fairchildsemi.com 5 www.fairchildsemi.com 74F258A Quad 2-Input Multiplexer with 3-STATE Outputs Physical Dimensions inches (millimeters) unless otherwise noted