HEF4511B
BCD to 7-segment latch/decoder/driver
Rev. 06 — 7 December 2009Product data sheet
1.General description
The HEF4511B is a BCD to 7-segment latch/decoder/driver with four address inputs
(D0to D3), an active HIGH latch enable input (LE), an active LOW ripple blanking input
(BL), an active LOW lamp test input (LT), and seven active HIGH NPN bipolar transistor
segment outputs (Qa to Qg).
When LE is LOW and BL is HIGH, the state of the segment outputs (Qa to Qg) is
determined by the data on D0 to D3. When LE goes HIGH, the last data present on D0 to
D3 is stored in the latches and the segment outputs remain unchanged. When LT is LOW,
all of the segment outputs are HIGH independent of all other input conditions. With LT
HIGH, a LOW on BL forces all segment outputs LOW. The inputs LT and BL do not affect
the latch circuit.
It operates over a recommended V DD power supply range of 3V 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 industrial (−40°C to +85°C) and automotive (−40°C to
+125°C) temperature ranges.
2.Features
Fully static operation
5 V, 10 V, and 15 V parametric ratings
Standardized symmetrical output characteristics
Operates across the automotive temperature range −40 °C to +125 °C
Complies with JEDEC standard JESD 13-B
3.Applications
Automotive and industrial
4.Ordering information
Table 1.Ordering information
All types operate from −40°C to +125°C.
Type number Package
Name Description Version
HEF4511BP DIP16plastic dual in-line package; 16 leads (300 mil)SOT38-4
HEF4511BT SO16plastic small outline package; 16 leads; body width 3.9mm SOT109-1
NXP Semiconductors HEF4511B
BCD to 7-segment latch/decoder/driver 5.Functional diagram
6.Pinning information
6.1Pinning
6.2Pin description
Table 2.Pin description
Symbol Pin Description
LT3lamp test input (active LOW)
BL4ripple blanking input (active LOW) LE5latch enable input (active HIGH) D0 to D37, 1, 2, 6address (data) input
V SS8ground supply voltage
Qa to Qg13, 12, 11, 10, 9, 15, 14segment output
V DD16supply voltage
7.Functional description
Table 3.Function table[1]
Inputs Outputs Display LE BL LT D3D2D1D0Qa Qb Qc Qd Qe Qf Qg
X X L X X X X H H H H H H H8
X L H X X X X L L L L L L L blank
L H H L L L L H H H H H H L0
active下载L H H L L L H L H H L L L L1
L H H L L H L H H L H H L H2
L H H L L H H H H H H L L H3
L H H L H L L L H H L L H H4
L H H L H L H H L H H L H H5
L H H L H H L L L H H H H H6
L H H L H H H H H H L L L L7
L H H H L L L H H H H H H H8
L H H H L L H H H H L L H H9
L H H H L H X L L L L L L L blank
L H H H H X X L L L L L L L blank
H H H X X X X N.C.N.C.N.C.N.C.N.C.N.C.N.C.N.C.
[1]H = HIGH voltage level; L = LOW voltage level; X = don’t care; N.C. = no change.

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