74HC4514; 74HCT4514
4-to-16 line decoder/demultiplexer with input latches
Rev. 3 — 20 February 2018 Product data sheet
1 General description
The 74HC4514; 74HCT4514 is a 4-to-16 line decoder/demultiplexer having four
binary weighted address inputs (A0 to A3), with latches, a latch enable input (LE), an
enable input (E) and 16 outputs (Q0 to Q15). When LE is HIGH, the selected output
is determined by the data on An. When LE goes LOW, the last data present at An are
stored in the latches and the outputs remain stable. When E is LOW, the selected output,
determined by the contents of the latch, is HIGH. At E HIGH, all outputs are LOW.
The enable input E does not affect the state of the latch. When the device is used as a
demultiplexer, E is the data input and A0 to A3 are the address inputs. Inputs include
clamp diodes. This enables the use of current limiting resistors to interface inputs to
voltages in excess of V
CC
.
The 74HCT4514 features reduced input threshold levels to allow interfacing to TTL logic
levels.
2 Features and benefits
• Input levels:
– For 74HC4514: CMOS level
– For 74HCT4514: TTL level
• 16-line demultiplexing capability
• Decodes 4 binary-coded inputs into 16 mutually-exclusive outputs
• Complies with JEDEC standard no. 7 A
• ESD protection:
– HBM JESD22-A114F exceeds 2000 V
– MM JESD22-A115-A exceeds 200 V
• Multiple package options
• Specified from -40 °C to +85 °C and -40 °C to +125 °C
3 Applications
• Digital multiplexing
• Address decoding
• Hexadecimal/BCD decoding
