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HD74HC253

Hitachi Semiconductor
Part Number HD74HC253
Manufacturer Hitachi Semiconductor
Description Dual 4-to-1-line Data Selectors/Multiplexers (with 3-state outputs)
Published Mar 23, 2005
Detailed Description HD74HC253 Dual 4-to-1-line Data Selectors/Multiplexers (with 3-state outputs) Description The large output drive and 3-...
Datasheet PDF File HD74HC253 PDF File

HD74HC253
HD74HC253

Overview
HD74HC253 Dual 4-to-1-line Data Selectors/Multiplexers (with 3-state outputs) Description The large output drive and 3-state features of this device make it ideally suited for interfacing with bus lines in bus organized systems.
When the output control input is taken high, the multiplexer outputs are sent into a high impedance state.
When the output control is held low, the associated multiplexer chooses the correct output channel for the given input signals determined by the select A and B inputs.
Features • • • • • High Speed Operation: tpd (Data to Y) = 18 ns typ (CL = 50 pF) High Output Current: Fanout of 10 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) HD74HC253 Function Table Select inputs B X L L L L H H H H A X L L H H L L H H Data iputs C0 X L H X X X X X X C1 X X X L H X X X X C2 X X X X X L H X X C3 X X X X X X X L H Output Control G H L L L L L L L L Output Y Z L H L H L H L H Notes 1.
X: irrelevant 2.
Address inputs A and B are common to both sections.
Pin Arrangement Output control 1G Select B 1 2 3 1C3 1C2 1C1 B B B 2C1 A A 2C0 16 VCC 15 2G Output control 14 A 2C3 2C2 Select Data inputs 4 5 6 13 12 11 10 9 2Y Output Data inputs 1C0 B A Output 1Y GND 7 8 1Y A 2Y (Top view) 2 HD74HC253 DC Characteristics Ta = 25°C Item Input voltage Symbol VIH Ta = –40 to +85°C Max — — — 0.
5 1.
35 1.
8 — — — — — 0.
1 0.
1 0.
1 0.
33 0.
33 ±5.
0 ±1.
0 40 µA µA µA I OL = 4 mA I OL = 5.
2 mA Vin = VIH or VIL, Vout = VCC or GND Vin = VCC or GND Vin = VCC or GND, Iout = 0 µA V I OH = –4 mA I OH = –5.
2 mA Vin = VIH or VIL I OL = 20 µA V Vin = VIH or VIL I OH = –20 µA V Unit V Test Conditions VCC (V) Min Typ Max Min 2.
0 4.
5 6.
0 1.
5 — 3.
15 — 4.
2 — — — — — — — — — — 0.
5 1.
5 3.
15 4.
2 — VIL 2.
0 4.
5 6.
0 1.
35 — 1.
8 — 1.
9 4.
4 5.
9 4.
13 5.
63 — — — Output voltage VOH 2.
0 4.
5 6.
0 4.
5 6.
0 1.
9 2.
0 — 4.
4 4.
5 — 5.
9 6.
0 — 4.
18 — 5.
68 — — — — — — — — — — — VOL 2.
0 4.
5 6.
0 4.
5 6...


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