Specifications
| Type | Description |
|---|---|
| Part Number | TMUX1121 |
| Manufacturer | Texas Instruments |
| Product Type | Operational Amplifier |
| Category | Signal Chain |
| Package / Case | DGK, 8-pin VSSOP |
| Switch Configuration | 1:1 SPST, 2 channels; condition: TMUX1121 device family |
| Control Logic | Active High; condition: TMUX1121 |
| Supply Voltage Range | 1.08 to 5.5 V; condition: recommended operating condition |
| Signal Path Voltage Range | 0 to VDD; condition: source or drain pins Sx, Dx |
| Logic Control Input Voltage Range | 0 to 5.5 V; condition: SELx pins |
| Operating Ambient Temperature | -40 to 125 °C; condition: recommended operating condition |
| On-Resistance | typ 1.9 Ω, max 4 Ω; condition: VDD=5 V, VS=0 V to VDD, ISD=10 mA, TA=25°C |
| On-Resistance | max 4.5 Ω; condition: VDD=5 V, VS=0 V to VDD, ISD=10 mA, TA=-40°C to +85°C |
| On-Resistance | max 4.9 Ω; condition: VDD=5 V, VS=0 V to VDD, ISD=10 mA, TA=-40°C to +125°C |
| On-Resistance Matching Between Channels | typ 0.13 Ω, max 0.5 Ω; condition: VDD=5 V, VS=0 V to VDD, ISD=10 mA, TA=-40°C to +125°C |
| On-Resistance Flatness | typ 0.85 Ω, max 1.6 Ω; condition: VDD=5 V, VS=0 V to VDD, ISD=10 mA, TA=-40°C to +125°C |
| Source Off Leakage Current | min -0.08 nA, typ ±0.003 nA, max 0.08 nA; condition: VDD=5 V, switch off, VD=4.5 V / 1.5 V, VS=1.5 V / 4.5 V, TA=25°C |
| Drain Off Leakage Current | min -0.08 nA, typ ±0.003 nA, max 0.08 nA; condition: VDD=5 V, switch off, VD=4.5 V / 1.5 V, VS=1.5 V / 4.5 V, TA=25°C |
| Channel On Leakage Current | min -0.1 nA, typ ±0.003 nA, max 0.1 nA; condition: VDD=5 V, switch on, VD=VS=4.5 V / 1.5 V, TA=25°C |
| Input Logic High Voltage | min 1.49 V, max 5.5 V; condition: VDD=5 V, TA=-40°C to +125°C |
| Input Logic Low Voltage | min 0 V, max 0.87 V; condition: VDD=5 V, TA=-40°C to +125°C |
| Logic Input Leakage Current | ±0.005 µA; condition: VDD=5 V, TA=25°C |
| Logic Input Capacitance | typ 1 pF; condition: VDD=5 V, TA=25°C |
| Supply Current | typ 0.007 µA, max 1 µA; condition: VDD=5 V, logic inputs=0 V or 5.5 V, TA=25°C typ; TA=-40°C to +125°C max |
| Transition Time Between Channels | typ 12 ns, max 18 ns; condition: VDD=5 V, VS=3 V, RL=200 Ω, CL=15 pF, TA=25°C typ; TA=-40°C to +125°C max |
| Break-Before-Make Time | typ 8 ns, min 1 ns; condition: VDD=5 V, VS=3 V, RL=200 Ω, CL=15 pF, TMUX1123 only |
| Charge Injection | -1.5 pC; condition: VDD=5 V, VS=1 V, RS=0 Ω, CL=1 nF, TA=25°C |
| Off Isolation | -62 dB; condition: VDD=5 V, RL=50 Ω, CL=5 pF, f=1 MHz, TA=25°C |
| Crosstalk | -100 dB; condition: VDD=5 V, RL=50 Ω, CL=5 pF, f=1 MHz, TA=25°C |
| Bandwidth | 300 MHz; condition: VDD=5 V, RL=50 Ω, CL=5 pF, TA=25°C |
| Source Off Capacitance | 6 pF; condition: VDD=5 V, f=1 MHz, TA=25°C |
| Drain Off Capacitance | 10 pF; condition: VDD=5 V, f=1 MHz, TA=25°C |
| On Capacitance | 18 pF; condition: VDD=5 V, f=1 MHz, TA=25°C |
| ESD Rating HBM | ±2000 V; condition: ANSI/ESDA/JEDEC JS-001, all pins |
| ESD Rating CDM | ±750 V; condition: JEDEC JESD22-C101, all pins |
| Datasheet Status | request_only |
Product Overview
TMUX1121 is a Texas Instruments Signal_Chain device described as a 2-channel SPST precision switch. The TMUX1121 device family uses a 1:1 SPST configuration with two channels, while the TMUX1121 control logic is active high. The part is supplied in a DGK, 8-pin VSSOP package.
Recommended operating conditions specify a 1.08 to 5.5 V supply range, a source or drain signal path range from 0 to VDD, and SELx logic control inputs from 0 to 5.5 V. The operating ambient temperature range is -40 to 125 °C.
At VDD = 5 V, the on-resistance is 1.9 Ω typical and 4 Ω maximum at 25 °C, with maximum ratings of 4.5 Ω through +85 °C and 4.9 Ω through +125 °C. Dynamic and signal parameters include 12 ns typical transition time, -1.5 pC charge injection, -62 dB off isolation, -100 dB crosstalk, and 300 MHz bandwidth under the stated datasheet conditions.
Key Features
- 1:1 SPST configuration with two switch channels
- Active-high control logic for TMUX1121 operation
- 1.08 to 5.5 V recommended supply range
- Signal path supports 0 to VDD voltage range
- Logic control inputs support 0 to 5.5 V
- -40 to 125 °C operating ambient temperature
- 1.9 Ω typical on-resistance at 5 V
- 0.13 Ω typical on-resistance matching between channels
- 300 MHz bandwidth at 5 V test conditions
- -62 dB off isolation at 1 MHz
- -100 dB crosstalk at 1 MHz
- DGK, 8-pin VSSOP package
Typical Applications
- Signal path switching
- Two-channel analog switching
- Low-voltage signal routing
- Active-high controlled switching
- Wide-temperature signal systems
- 300 MHz bandwidth signal paths
- Low-leakage switch networks
Procurement Notes
When requesting a quote for TMUX1121, buyers should confirm the manufacturer, package or case, required quantity, target date code, compliance documents, packing method, destination country and expected delivery schedule.
If alternatives are acceptable, buyers should share the approved vendor list, required electrical or optical limits, package constraints and qualification requirements. Any alternative part should be reviewed by the buyer's engineering team before production use.
For analog and signal-chain sourcing, supply voltage, bandwidth, accuracy, noise level, package, temperature grade, input/output configuration and qualification requirements should be verified before approval.
FAQ
What type of switch is the TMUX1121?
TMUX1121 is a Texas Instruments 2-channel SPST precision switch. The TMUX1121 device family uses a 1:1 SPST switch configuration with two channels, and the TMUX1121 control logic is active high.
What supply voltage range does TMUX1121 support?
The recommended supply voltage range is 1.08 to 5.5 V. Under recommended operating conditions, the signal path voltage range on source or drain pins is 0 to VDD.
What on-resistance is specified for TMUX1121 at 5 V?
At VDD = 5 V, VS = 0 V to VDD, ISD = 10 mA, and TA = 25°C, on-resistance is specified as 1.9 Ω typical and 4 Ω maximum.
What package is specified for the TMUX1121?
The provided package information identifies TMUX1121 in a DGK, 8-pin VSSOP package. The operating ambient temperature range is specified from -40 to 125 °C.
Technical Review & Sourcing Note
Prepared by LDeepAI Component Sourcing Team. Reviewed for RFQ, documentation and alternative sourcing use. Last updated: July 12, 2026.
This page is based on manufacturer datasheet information and LDeepAI sourcing review. Specifications should be verified against the official manufacturer datasheet before final procurement or design approval. Final electrical, optical and reliability approval should be confirmed by the buyer's engineering team.