74HC257DB
74HC257DB is Quad 2-input multiplexer manufactured by Nexperia.
- Part of the 74HC257 comparator family.
- Part of the 74HC257 comparator family.
description
The 74HC257; 74HCT257 is a quad 2-input multiplexer with 3-state outputs. Inputs include clamp diodes. This enables 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 m A per JESD 78 Class II Level B
- plies with JEDEC standards:
- JESD8C (2.7 V to 3.6 V)
- JESD7A (2.0 V to 6.0 V)
- Non-inverting data path
- 3-state outputs interface directly with system bus
- Input levels:
- For 74HC257: CMOS level
- For 74HCT257: TTL level
- 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 74HC257D -40 °C to +125 °C 74HCT257D 74HC257PW -40 °C to +125 °C 74HCT257PW
Name SO16
TSSOP16
Description
Version plastic small outline package; 16 leads; body width 3.9 mm SOT109-1 plastic thin shrink small outline package; 16 leads; body width 4.4 mm
SOT403-1
Nexperia
74HC257; 74HCT257
Quad 2-input multiplexer; 3-state
4. Functional diagram
1I0
1Y 4
1I1
2I0
2I1...