HD74HC258 Quad. 2-to-1-line Data Selectors/Multiplexers (with 3-state outputs) Description The large output drive capability coupled with the 3-state feature make this device ideal for interfacing with bus lines in a bus organized system. When the output control input line is taken high, the outputs of all four multiplexers are sent into a high impedance state. When the output control line is low, the select input chooses whether the A or B input is used. Features • • • • • High Speed Operation: tpd (Data to Y) = 11 ns typ (CL = 50 pF) High Output Current: Fanout of 15 LSTTL Loads Wide Operating Voltage: VCC = 2 to 6 V Low Input Current: 1 µA max Low Quiescent Supply Current: ICC (static) = 4 µA max (Ta = 25°C) Function Table Inputs Outputs Output Control Select A B Y H X X X Z L L L X H L L H X L L H X L H L H X H L Notes H: high level L : low level X: irrelevant Z: off (high-impedance) state of a 3-state output HD74HC258 Pin Arrangement 16 VCC Select 1 1A 2 1A 1B 3 1B 4A 14 4A 1Y 4 1Y 4B 13 4B 2A 5 2A 4Y 12 4Y 2B 6 2B 3A 11 3A 2Y 7 2Y 3B 10 3B GND 8 S G 15 Inputs Output cotrol Inputs Outputs Output Inputs Inputs Outputs 3Y 9 3Y Output (Top view) Absolute Maximum Ratings Item Symbol Rating Unit Supply voltage range VCC –0.5 to +7.0 V Input voltage VIN –0.5 to VCC + 0.5 V Output voltage VOUT –0.5 to VCC + 0.5 V DC current drain per pin I OUT ±35 mA DC current drain per VCC, GND I CC, I GND ±75 mA DC input diode current I IK ±20 mA DC output diode current I OK ±20 mA Power dissipation per package PT 500 mW Storage temperature Tstg –65 to +150 °C 2 HD74HC258 Logic Diagram VCC 1A 1Y 1B VCC 2A 2Y 2B VCC 3A 3Y 3B VCC 4A 4Y 4B Select Output control 3 HD74HC258 DC Characteristics Ta = –40 to +85°C Ta = 25°C Item Symbol VCC (V) Min Typ Max Min Max Unit Input voltage VIH 2.0 1.5 — — 1.5 — V 4.5 3.15 — — 3.15 — 6.0 4.2 — — 4.2 — 2.0 — — 0.5 — 0.5 4.5 — — 1.35 — 1.35 6.0 — — 1.8 — 1.8 2.0 1.9 2.0 — 1.9 — 4.5 4.4 4.5 — 4.4 — 6.0 5.9 6.0 — 5.9 — 4.5 4.18 — — 4.13 — I OH = –6 mA 6.0 5.68 — — 5.63 — I OH = –7.8 mA 2.0 — 0.0 0.1 — 0.1 4.5 — 0.0 0.1 — 0.1 6.0 — 0.0 0.1 — 0.1 4.5 — — 0.26 — 0.33 I OL = 6 mA 6.0 — — 0.26 — 0.33 I OL = 7.8 mA VIL Output voltage VOH VOL Test Conditions V V V Vin = VIH or VIL I OH = –20 µA Vin = VIH or VIL I OL = 20 µA Off-state output current I OZ 6.0 — — ±0.5 — ±5.0 µA Vin = VIH or VIL, Vout = VCC or GND Input current Iin 6.0 — — ±0.1 — ±1.0 µA Vin = VCC or GND Quiescent supply current I CC 6.0 — — 4.0 40 µA Vin = VCC or GND, Iout = 0 µA 4 — HD74HC258 AC Characteristics (CL = 50 pF, Input tr = tf = 6 ns) Ta = –40 to +85°C Ta = 25°C VCC (V) Min Typ Max Min Max Unit Test Conditions Propagation delay t PLH 2.0 — — 115 — 145 ns Data to Y time 4.5 — 11 23 — 29 6.0 — — 20 — 25 2.0 — — 115 — 145 4.5 — 13 23 — 29 6.0 — — 20 — 25 2.0 — — 150 — 190 4.5 — 11 30 — 38 6.0 — — 26 — 33 2.0 — — 150 — 190 4.5 — 13 30 — 38 6.0 — — 26 — 33 2.0 — — 150 — 190 4.5 — 13 30 — 38 6.0 — — 26 — 33 2.0 — — 150 — 190 4.5 — 18 30 — 38 6.0 — — 26 — 33 Item Output enable Symbol t PHL t ZL time t ZH Output disable t LZ time t HZ Output rise/fall t TLH 2.0 — — 60 — 75 time t THL 4.5 — 4 12 — 15 6.0 — — 10 — 13 — — 5 10 — 10 Input capacitance Cin Select to Y ns ns ns ns ns pF 5 Unit: mm 19.20 20.00 Max 1 7.40 Max 9 6.30 16 8 1.3 0.48 ± 0.10 2.54 Min 5.06 Max 2.54 ± 0.25 0.51 Min 1.11 Max 7.62 + 0.13 0.25 – 0.05 0° – 15° Hitachi Code JEDEC EIAJ Weight (reference value) DP-16 Conforms Conforms 1.07 g Unit: mm 10.06 10.5 Max 9 1 8 1.27 *0.42 ± 0.08 0.40 ± 0.06 0.10 ± 0.10 0.80 Max *0.22 ± 0.05 0.20 ± 0.04 2.20 Max 5.5 16 0.20 7.80 +– 0.30 1.15 0° – 8° 0.70 ± 0.20 0.15 0.12 M *Dimension including the plating thickness Base material dimension Hitachi Code JEDEC EIAJ Weight (reference value) FP-16DA — Conforms 0.24 g Unit: mm 9.9 10.3 Max 9 1 8 0.635 Max *0.42 ± 0.08 0.40 ± 0.06 0.15 *0.22 ± 0.03 0.20 ± 0.03 1.27 0.11 0.14 +– 0.04 1.75 Max 3.95 16 0.10 6.10 +– 0.30 1.08 0° – 8° 0.67 0.60 +– 0.20 0.25 M *Dimension including the plating thickness Base material dimension Hitachi Code JEDEC EIAJ Weight (reference value) FP-16DN Conforms Conforms 0.15 g Cautions 1. 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