MM54HC4511 datasheet(4/6 Pages) NSC

4 / 6 page

INPUTS

A B C D (Pins 7 1 2 6)

BCD data inputs A (pin 7) is the

least-significant data bit and D (pin 6) is the most significant

bit Hexadecimal data A – F at these inputs will cause the

outputs to assume a logic low offering an alternate method

of blanking the display

OUTPUTS

a–g

Decoded buffered outputs These outputs unlike the

4511 have CMOS drivers which will produce typical CMOS

output voltage levels

CONTROLS

BI (Pin 4)

Active-low display blanking input A logic low on

this input will cause all outputs to be held at a logic low

thereby blanking the display LT is the only input that will

override the Bl input

LT (Pin 3)

Active-low lamp test A low logic level on this

input causes all outputs to assume a logic high This input

allows the user to test all segments of a display with a

single control input This input is independent of all other

inputs

LE (Pin 5)

Latch enable input This input controls the 4-bit

transparent latch A logic high on this input latches the data

present at the A B C and D inputs a logic low allows the

data to be transmitted through the latch to the decoder

Output Characteristics (VCCe5V)

TLF5373 – 2

The expected minimum curves are not guarantees but are design aids

TLF5373 – 3

Typical Applications

TLF5373 – 4

Typical Common Cathode LED Connection

TLF5373 – 5

Incandescent Bulb Driving Circuit

MM54HC4511 bảng dữ liệu(PDF) 4 Page - National Semiconductor (TI)