DG408DQ-T1-E3 from Vishay, in a TSSOP-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	A0	input	Address bit 0 (LSB) of the 3-bit channel-select bus. TTL-compatible: VIL ≤ 0.8 V, VIH ≥ 2.4 V.
2	EN	input	Active-high enable. EN = 0 turns all switches OFF; EN = 1 enables the channel selected by A0/A1/A2. TTL-compatible.
3	V-	power_in	Negative analog supply. Dual-supply range ±5 V to ±20 V, or tie to GND for single-supply +5 V to +36 V operation. V+ to V- ≤ 44 V absolute max.
4	S1	passive	Analog switch source input, channel 1. Selected when A2A1A0 = 000 and EN = 1. Signal range V- to V+.
5	S2	passive	Analog switch source input, channel 2. Selected when A2A1A0 = 001 and EN = 1.
6	S3	passive	Analog switch source input, channel 3. Selected when A2A1A0 = 010 and EN = 1.
7	S4	passive	Analog switch source input, channel 4. Selected when A2A1A0 = 011 and EN = 1.
8	D	passive	Common analog drain (multiplexer output). Bidirectional; conducts equally in both directions. RDS(on) ≈ 100 Ω, peak pulsed current 100 mA (1 ms, 10 % duty).
9	S8	passive	Analog switch source input, channel 8. Selected when A2A1A0 = 111 and EN = 1.
10	S7	passive	Analog switch source input, channel 7. Selected when A2A1A0 = 110 and EN = 1.
11	S6	passive	Analog switch source input, channel 6. Selected when A2A1A0 = 101 and EN = 1.
12	S5	passive	Analog switch source input, channel 5. Selected when A2A1A0 = 100 and EN = 1.
13	V+	power_in	Positive analog supply. Dual-supply ±5 V to ±20 V, or single-supply +5 V to +36 V referenced to GND (V- tied to GND). Typical I+ = 10 µA.
14	GND	power_in	Digital/logic ground reference. GND-to-V- absolute max -25 V.
15	A2	input	Address bit 2 (MSB) of the 3-bit channel-select bus. TTL-compatible.
16	A1	input	Address bit 1 of the 3-bit channel-select bus. TTL-compatible.

Key specifications

Parameter	Value
Manufacturer	Vishay
Package	TSSOP-16
Category	Comm/UART
Pins	16

Ordering variants

Same part, different packaging or reel option.

DG408DQ-T1-E3DQ-E3
DG408DQ-T1-E3
DG408DQ-T1-E3DY
DG408DQ-T1-E3DY-E3
DG408DQ-T1-E3DY-T1
DG408DQ-T1-E3DY-T1-E3
DG408DQ-T1-E3DJ
DG408DQ-T1-E3DJ-E3

CAD (KiCad official)

Symbol: DG408DQ-T1-E3
Footprint: Package_SO:TSSOP-16_4.4x5mm_P0.65mm
3D model: TSSOP-16 (KiCad packages3D, STEP)

3D model downloads

Two STEP files. Same geometry, different body top:

File	Size	Use it when
`dg408dq-t1-e3.step`	205 KB	You want the bare part, or you mark your own boards.
`dg408dq-t1-e3-etched.step`	2.8 MB	You want the part with `DG408DQ-T1-E3` already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 690 faces against 255 in the bare model. It survives export, section views, and rendering in any CAD tool, and it drops straight into KiCad or Fusion with no extra setup.

Provenance

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

Datasheet: Vishay datasheet (17 pp, sha256 950673efec0223bf, retrieved 2026-08-17, tier: manufacturer)
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