CD4511BE from Texas Instruments, in a DIP-16. Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin	Name	Type	Function
1	B	input	BCD data input bit B (weight 2). CMOS logic input, protected by internal CMOS protection network. Referenced to VSS/VDD; VIH min ~3.5 V at VDD=5 V, ~7 V at VDD=10 V, 11 V at VDD=15 V.
2	C	input	BCD data input bit C (weight 4). CMOS logic input latched into the internal 4-bit register when LE=0.
3	LT	input	Lamp Test, active low. When LT=0 all seven segment outputs (a..g) are driven high to test the display, overriding BL and BCD inputs.
4	BL	input	Blanking, active low. When BL=0 (and LT=1) all seven segment outputs are blanked (driven low). Used for intensity modulation, strobing, or leading-zero suppression.
5	LE/STROBE	input	Latch Enable / Strobe. When LE=0 the BCD input data is passed through to the decoder; when LE=1 the last BCD data is latched and the display is held. Minimum strobe pulse width 400 ns at VDD=5 V.
6	D	input	BCD data input bit D (weight 8, MSB). BCD input codes greater than 1001 (>9) blank the display.
7	A	input	BCD data input bit A (weight 1, LSB). CMOS logic input referenced to VSS/VDD.
8	VSS	power_in	Negative supply / ground reference. Typically connected to 0 V. Absolute maximum VDD relative to VSS is -0.5 V to +20 V.
9	e	output	Segment 'e' output. Active-high n-p-n bipolar current-sourcing driver capable of sourcing up to 25 mA for direct drive of common-cathode LED, incandescent, or low-voltage fluorescent segment displays.
10	d	output	Segment 'd' output. Active-high n-p-n bipolar current-sourcing driver, up to 25 mA source current.
11	c	output	Segment 'c' output. Active-high n-p-n bipolar current-sourcing driver, up to 25 mA source current.
12	b	output	Segment 'b' output. Active-high n-p-n bipolar current-sourcing driver, up to 25 mA source current.
13	a	output	Segment 'a' output. Active-high n-p-n bipolar current-sourcing driver, up to 25 mA source current.
14	g	output	Segment 'g' output. Active-high n-p-n bipolar current-sourcing driver, up to 25 mA source current.
15	f	output	Segment 'f' output. Active-high n-p-n bipolar current-sourcing driver, up to 25 mA source current.
16	VDD	power_in	Positive supply. Operating VDD range 3 V to 18 V (referenced to VSS). Absolute-maximum VDD is +20 V. Full-package temperature range -55 °C to +125 °C.

Key specifications

Parameter	Value
Manufacturer	Texas Instruments
Package	DIP-16
Category	LED Drivers
Pins	16

Ordering variants

Same part, different packaging or reel option.

CD4511BEE
CD4511BEF3A
CD4511BENSR
CD4511BEPW
CD4511BEPWR

CAD (KiCad official)

Symbol: CD4511BE
Footprint: Package_DIP:DIP-16_W7.62mm
3D model: DIP-16 (KiCad packages3D, STEP)

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

Datasheet: Texas Instruments datasheet (19 pp, sha256 64e032d04d526047, retrieved 2026-08-17, tier: lcsc)
Extractor: ds2sf (Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate.
CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF