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| MC54/74F153 DUAL 4-INPUT MULTIPLEXER The MC54/74F153 is a high-speed Dual 4-Input Multiplexer with common select inputs and individual enable inputs for each section. It can select two lines of data from four sources. The two buffered outputs present data in the true (non-inverted) form. In addition to multiplexer operation, the F153 can generate any two functions of three variables. CONNECTION DIAGRAM DIP (TOP VIEW) VCC 16 Eb 15 S0 14 I3b 13 I2b 12 I1b 11 I0b 10 Zb 9 DUAL 4-INPUT MULTIPLEXER FASTTM SHOTTKY TTL J SUFFIX CERAMIC CASE 620-09 16 1 Ea 2 S1 3 I3a 4 I2a 5 I1a 6 I0a 7 Za 8 GND 1 LOGIC DIAGRAM Ea I0a 1 6 5 I1a 4 I2a 3 I3a 2 S1 14 S0 10 I0b 11 I1b 12 I2b 13 I3b Eb 15 16 1 N SUFFIX PLASTIC CASE 648-08 16 1 D SUFFIX SOIC CASE 751B-03 ORDERING INFORMATION MC54FXXXJ MC74FXXXN MC74FXXXD Ceramic Plastic SOIC 7 Za VCC = PIN 16 GND = PIN 8 = PIN NUMBERS 9 Zb GUARANTEED OPERATING RANGES Symbol VCC TA Supply Voltage Operating Ambient Temperature Range Parameter 54, 74 54 74 IOH IOL Output Current -- High Output Current -- Low 54, 74 54, 74 Min 4.5 -55 0 Typ 5.0 25 25 Max 5.5 125 70 -1.0 20 mA mA Unit V C FAST AND LS TTL DATA 4-64 MC54/74F153 FUNCTIONAL DESCRIPTION The MC54/74F153 is a Dual 4-Input Multiplexer. It can select 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, E b) which can be used to strobe the outputs independently. When the Enables (Ea, Eb) are HIGH, the corresponding outputs (Za, Zb) are forced LOW. The F153 is the logic implementation of a 2-pole, 4-position switch, where the position of the switch is determined by the logic levels supplied to the two Select Inputs. The logic equations for the outputs are shown below: FUNCTION TABLE Select Inputs S0 X L L H H L L H H S1 X L L L L H H H H E H L L L L L L L L Inputs (a or b) I0 X L H X X X X X X I1 X X X L H X X X X I2 X X X X X L H X X I3 X X X X X X X L H Output Z L L H L H L H L H 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) The F153 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 F153 can generate two functions of three variables. This is useful for implementing highly irregular random logic. H = HIGH Voltage Level; L = LOW Voltage Level; X = Don't Care DC CHARACTERISTICS OVER OPERATING TEMPERATURE RANGE (unless otherwise specified) Limits Symbol VIH VIL VIK VOH Parameter Input HIGH Voltage Input LOW Voltage Input Clamp Diode Voltage Output HIGH Voltage 54, 74 74 VOL IIH Output LOW Voltage Input HIGH Current 2.5 2.7 0.5 20 0.1 IIL IOS ICC Input LOW Current Output Short Circuit Current (Note 2) Power Supply Current -60 -0.6 -150 20 Min 2.0 0.8 -1.2 Typ Max Unit V V V V V V A mA mA mA mA Test Conditions Guaranteed Input HIGH Voltage Guaranteed Input LOW Voltage IIN = -18 mA, VCC = MIN IOL = -1.0 mA IOL = -1.0 mA IOL = 20 mA VCC = 4.50V VCC = 4.75 V VCC = MIN VIN = 2.7 V, VCC = MAX VIN = 7.0 V, VCC = MAX VIN = 0.5 V, VCC = MAX VOUT = 0 V, VCC = MAX VIN = GND, VCC = MAX NOTES: 1. For conditions shown as MIN or MAX, use the appropriate value specified under recommended operating conditions for the applicable device type. 2. Not more than one output should be shorted at a time, nor for more than 1 second. FAST AND LS TTL DATA 4-65 MC54/74F153 AC CHARACTERISTICS 54/74F TA = +25C VCC = +5.0 V CL = 50 pF Symbol tPLH tPHL tPLH tPHL tPLH tPHL Parameter Propagation Delay Sn to Zn Propagation Delay En to Zn Propagation Delay In to Zn Min 4.5 3.5 4.5 3.0 3.0 3.0 Max 10.5 9.0 9.0 7.0 7.0 6.5 54F TA = -55C to +125C VCC = 5.0 V 10% CL = 50 pF Min 4.5 3.5 4.5 2.5 2.5 2.5 Max 14 11 11.5 9.0 9.0 8.0 74F TA = 0C to 70C VCC = 5.0 V 10% CL = 50 pF Min 4.5 3.5 4.5 2.5 3.0 2.5 Max 12 10.5 10.5 8.0 8.0 7.5 ns ns Unit ns FAST AND LS TTL DATA 4-66 |
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