HD74HC356
HD74HC356 is 8-to-1-line Data Selectors/Multiplexer/Register(with 3-state outputs) manufactured by Hitachi Semiconductor.
Description
This data selectors/multiplexers contain full on-chip binary decoding to select one of eight data sources. The data select address is stored in transparent latches that are enabled by a low level address on pin 11, Select Control. Data on the 8 input lines is stored in a parallel input/output register which in the HD74HC356 is posed of 8 edge-triggered flip-flops, clocked by a low to high transition on pin 9, clock. Both true (Y) and plementary (W) 3-state outputs are available.
Features
- -
- -
- High Speed Operation: tpd (Clock to W, Y) = 27 ns typ (CL = 50 p F) 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 Select S1 X X X L L L L L L L L H H H H H H H H S2 X X X L L L L H H H H L L L L H H H H S0 X X X L L H H L L H H L L H H L L H H H or L H or L H or L H or L H or L H or L H or L H or L Clock X X X Output Enable G1 H X X L L L L L L L L L L L L L L L L G2 X H X L L L L L L L L L L L L L L L L G3 X X L H H H H H H H H H H H H H H H H Outputs W Z Z Z D0 D0n D1 D1n D2 D2n D3 D3n D4 D4n D5 D5n D6 D6n D7 D7n Y Z Z Z D0 D0n D1 D1n D2 D2n D3 D3n D4 D4n D5 D5n D6 D6n D7 D7n
Pin Arrangement
D7 1 D6 2 D5 3 Data inputs D4 4 D3 5 D2 6 D1 7 D0 8 Clock 9 GND 10
20 VCC 19 Y Outputs 18 W 17 G3 16 G2 15 G1 14 S0 13 S1 12 S2 11 Select control Select Enables
(Top view)
Absolute Masimum Ratings
Item Supply voltage range Input voltage Output voltage Output current DC current drain per VCC, GND DC input diode current DC output diode current Power dissipation per package Storage temperature Symbol VCC VIN VOUT I OUT I CC, I GND I IK I OK PT Tstg Rating
- 0.5 to +7.0
- 0.5 to VCC + 0.5
- 0.5 to VCC + 0.5 ±35 ±75 ±20 ±20 500
- 65 to +150 Unit V V V m A m A m A m A m W °C
Block Diagram
S0
S1
S2
D0
D1
D2
D3...