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| 74HC_HCT251_15 Datasheet, PDF (1/20 Pages) NXP Semiconductors – 8-input multiplexer; 3-state | |||
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74HC251; 74HCT251
8-input multiplexer; 3-state
Rev. 3 â 9 July 2013
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
ï® Input levels:
ïµ For 74HC251: CMOS level
ïµ For 74HCT251: TTL level
ï® Low-power dissipation
ï® Non-inverting data path
ï® Specified in compliance with JEDEC standard no. 7A
ï® ESD protection:
ïµ HBM JESD22-A114F exceeds 2 000 V
ïµ MM JESD22-A115-A exceeds 200 V
ï® Multiple package options
ï® Specified from ï40 ï°C to +85 ï°C and from ï40 ï°C to +125 ï°C
3. Ordering information
Table 1. Ordering information
Type number
Package
Temperature range Name
74HC251N
ï40 ï°C to +125 ï°C DIP16
74HCT251N
74HC251D
ï40 ï°C to +125 ï°C SO16
74HCT251D
74HC251DB
ï40 ï°C to +125 ï°C SSOP16
74HCT251DB
74HC251PW
ï40 ï°C to +125 ï°C TSSOP16
74HCT251PW
Description
plastic dual in-line package; 16 leads (300 mil)
Version
SOT38-4
plastic small outline package; 16 leads; body width SOT109-1
3.9 mm
plastic shrink small outline package; 16 leads;
body width 5.3 mm
SOT338-1
plastic thin shrink small outline package; 16 leads; SOT403-1
body width 4.4 mm
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