8-input multiplexer
74HC251; 74HCT251
8-input multiplexer; 3-state
Rev. 6 — 8 February 2021
Product data sheet
1. General description
The ...
Description
74HC251; 74HCT251
8-input multiplexer; 3-state
Rev. 6 — 8 February 2021
Product data sheet
1. General description
The 74HC251; 74HCT251 is an 8-bit multiplexer with eight binary inputs (I0 to I7), three select inputs (S0 to S2) and an output enable input (OE). The select inputs select one of the eight binary inputs and route it to the complementary outputs (Y and Y). A HIGH on OE causes the outputs to assume a high-impedance OFF-state. Inputs include clamp diodes that enable the use of current limiting resistors to interface inputs to voltages in excess of VCC.
2. Features and benefits
Wide supply voltage range from 2.0 V to 6.0 V CMOS low power dissipation High noise immunity Latch-up performance exceeds 100 mA per JESD 78 Class II Level B Complies with JEDEC standards:
JESD8C (2.7 V to 3.6 V) JESD7A (2.0 V to 6.0 V) Input levels: For 74HC251: CMOS level For 74HCT251: TTL level Non-inverting data path ESD protection: HBM JESD22-A114F exceeds 2000 V MM JESD22-A115-A exceeds 200 V Specified from -40 °C to +85 °C and from -40 °C to +125 °C
3. Ordering information
Table 1. Ordering information
Type number
Package
Temperature range Name
74HC251D
-40 °C to +125 °C SO16
74HCT251D
74HC251PW
-40 °C to +125 °C TSSOP16
74HCT251PW
Description plastic small outline package; 16 leads; body width 3.9 mm
plastic thin shrink small outline package; 16 leads; body width 4.4 mm
Version SOT109-1
SOT403-1
Nexperia
4. Functional diagram
4 3 2 1 15 ...
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