HEF4543B_09 Datasheet, PDF (1/16 Pages) NXP Semiconductors – BCD to 7-segment latch/decoder/driver

HEF4543B
BCD to 7-segment latch/decoder/driver
Rev. 05 — 27 October 2009
Product data sheet
1. General description
The HEF4543B is a BCD to 7-segment latch/decoder/driver for liquid crystal and LED
displays. It has four address inputs (D0 to D3), an active LOW latch enable input (LE), an
active HIGH blanking input (BL), an active HIGH phase input (PH) and seven buffered
segment outputs (Qa to Qg).
The circuit provides the function of a 4-bit storage latch and an 8-4-2-1 BCD to 7-segment
decoder/driver. It can invert the logic levels of the output combination. The phase (PH),
blanking (BL) and latch enable (LE) inputs are used to reverse the function table phase,
blank the display and store a BCD code, respectively.
For liquid crystal displays, a square-wave is applied to PH and the electrical common
back-plane of the display. The outputs of the device are directly connected to the
segments of the liquid crystal.
It operates over a recommended V_DD power supply range of 3 V to 15 V referenced to V_SS
(usually ground). Unused inputs must be connected to V_DD, V_SS, or another input. It is
also suitable for use over the full industrial (−40 °C to +85 °C) temperature range.
2. Features
I Fully static operation
I 5 V, 10 V, and 15 V parametric ratings
I Standardized symmetrical output characteristics
I Operates across the full industrial temperature range −40 °C to +85 °C
I Complies with JEDEC standard JESD 13-B
3. Applications
I Industrial
4. Ordering information
Table 1. Ordering information
All types operate from −40 °C to +85 °C
Type number
Package
Name
Description
HEF4543BP
DIP16
plastic dual in-line package; 16-leads (300 mil)
HEF4543BT
SO16
plastic small outline package; 16 leads; body width 3.9 mm
Version
SOT38-4
SOT109-1