74F352PC

Revised August 1999 74F352 Dual 4-Input Multiplexer General Description Features The 74F352 is a very high-speed dual 4-input multiplexer with common Select inputs and individual Enable inputs for each section. It can select two bits of data from four sources. The two buffered outputs present data in the inverted (complementary) form. The 74F352 is the functional equivalent of the 74F153 except with inverted outputs. ■ Inverted version of 74F153 ■ Separate enables for each multiplexer ■ Input clamp diode limits high speed termination effects Ordering Code: Order Number Package Number Package Description 74F352SJ M16D 16-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide 74F352PC N16E 16-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300 Wide Devices also available in Tape and Reel. Specify by appending the suffix letter “X” to the ordering code. Logic Symbols Connection Diagram IEEE/IEC Truth Table Select Inputs (a or b) Inputs Output S0 S1 E I0 I1 I2 I3 Z X X H X X X X H L L L L X X X H L L L H X X X L H L L X L X X H H L L X H X X L L H L X X L X H L H L X X H X L H H L X X X L H H H L X X X H L H = HIGH Voltage Level L = LOW Voltage Level X = Immaterial © 1999 Fairchild Semiconductor Corporation DS009519 www.fairchildsemi.com 74F352 Dual 4-Input Multiplexer May 1988 74F352 Unit Loading/Fan Out Pin Names Description U.L. Input IIH/IIL HIGH/LOW Output IOH/IOL I0a–I3a Side A Data Inputs 1.0/1.0 20 µA/−0.6 mA I0b–I3b Side B Data Inputs 1.0/1.0 20 µA/−0.6 mA S0–S1 Common Select Inputs 1.0/1.0 20 µA/−0.6 mA Ea Side A Enable Input (Active LOW) 1.0/1.0 20 µA/−0.6 mA Eb Side B Enable Input (Active LOW) 1.0/1.0 20 µA/−0.6 mA Z a, Zb Multiplexer Outputs (Inverted) 50/33.3 −1 mA/20 mA Functional Description The 74F352 can be used to move data from a group of registers to a common output bus. The particular register from which the data came would be determined by the state of the Select inputs. A less obvious application is as a function generator. The 74F352 can generate two functions of three variables. This is useful for implementing highly irregular random logic. The 74F352 is a dual 4-input multiplexer. It selects two bits of data from up to four sources under the control of the common Select inputs (S0, S1). The two 4-input multiplexer circuits have individual active LOW Enables (Ea, Eb) which can be used to strobe the outputs independently. When the Enables (Ea, Eb) are HIGH, the corresponding outputs (Za, Zb) are forced HIGH. The logic equations for the outputs are shown below: Za = Ea • (I0a • S1 • S0 + I1a • S1• S0 + I2a • S1 • S0 + I3a • S1 • S0) Zb = Eb • (I0b • S1 • S0 + I1b • S1• S0 + I2b • S1 • S0 + I3b • S1 • S0) 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. Note 2: Either voltage limit or current limit is sufficient to protect inputs. Current Applied to Output twice the rated IOL (mA) in LOW State (Max) DC Electrical Characteristics Symbol Parameter Min Typ Max 2.0 Units VCC Conditions VIH Input HIGH Voltage VIL Input LOW Voltage 0.8 V VCD Input Clamp Diode Voltage −1.2 V Min VOH Output HIGH V Min 0.5 V Min IOL = 20 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 −150 mA Max VOUT = 0V Voltage VOL Output LOW 10% VCC 2.5 5% VCC 2.7 V 10% VCC Recognized as a HIGH Signal Recognized as a LOW Signal IIN = −18 mA IOH = −1 mA IOH = −1 mA Voltage IIH Input HIGH Current IBVI Input HIGH Current Breakdown Test ICEX Output HIGH Leakage Current VID Input Leakage 4.75 Test IOD Output Leakage Circuit Current IID = 1.9 µA All Other Pins Grounded VIOD = 150 mV All Other Pins Grounded IIL Input LOW Current IOS Output Short-Circuit Current ICCH Power Supply Current 9.3 14 mA Max VO = HIGH ICCL Power Supply Current 13.3 20 mA Max VO = LOW −60 AC Electrical Characteristics Symbol Parameter TA = +25°C TA = 0°C to +70°C VCC = +5.0V VCC = +5.0V CL = 50 pF CL = 50 pF Min Typ Max Min Max tPLH Propagation Delay 4.0 8.0 11.0 3.5 12.5 tPHL Sn to Zn 3.5 6.5 8.5 3.0 9.5 7.0 tPLH Propagation Delay 3.0 4.5 6.0 2.5 tPHL En to Zn 3.0 5.0 7.0 2.5 8.0 tPLH Propagation Delay 2.0 5.2 7.0 2.0 8.0 tPHL In to Zn 1.3 2.5 4.0 1.0 4.5 3 Units ns ns ns www.fairchildsemi.com 74F352 Absolute Maximum Ratings(Note 1) 74F352 Physical Dimensions inches (millimeters) unless otherwise noted 16-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide Package Number M16D www.fairchildsemi.com 4 74F352 Dual 4-Input Multiplexer Physical Dimensions inches (millimeters) unless otherwise noted (Continued) 16-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300 Wide Package Number N16E 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