My Inquiry
My Account
STMicroelectronics 74LVQ157MTR
- Part No.:
- 74LVQ157MTR
- Manufacturer:
- STMicroelectronics
- Category:
- Signal Switches, Multiplexers, Decoders
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
74LVQ157MTR.pdf
- Description:
- IC MULTIPLEXER 4 X 2:1 16SO
- Quantity:
- Payment:
- Shipping:
Inventory:2,548
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
74LVQ157MTR from STMicroelectronics is a low-voltage CMOS quad 2-channel multiplexer with pin- and function-compatibility to 74-series 157 logic. It operates from 2.0 V to 3.6 V, delivers 7 ns typical propagation delay at 3.3 V, supports 12 mA output drive (|IOH| = IOL), and features 75 Ω transmission-line output drive for clean signal integrity in 3.3 V bus applications.
For engineers reviewing the 74LVQ157MTR datasheet, 74LVQ157MTR pinout, 74LVQ157MTR application, or 74LVQ157MTR equivalent, this device serves as a drop-in upgrade for legacy 74LS157/74HC157 in low-noise, low-power 3.3 V digital systems requiring symmetrical timing, ESD-hardened I/O (2 kV), and PCI-bus-level drive capability.
Technical Context
The 74LVQ157MTR implements four independent 2:1 digital multiplexers sharing common SELECT and STROBE control inputs. Its C2MOS sub-micron silicon gate process enables rail-to-rail input compatibility (0–VCC) and guaranteed operation down to 1.2 V data retention voltage.
Each channel routes either A- or B-source inputs to its Y output based on SELECT state; STROBE = HIGH forces all outputs LOW regardless of SELECT. Output impedance is balanced (|IOH| = IOL ≥ 12 mA at VCC = 3.0 V), and dynamic noise parameters (VOLP = 0.2 V typ., VOLV = –0.2 V) are specified under 50 pF/500 Ω AC load conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Operating Range | 2.0 V to 3.6 V - Enables direct interface with 3.3 V LVTTL, LVCMOS, and PCI-bus signaling without level shifters. |
| tPD (SELECT→Y) | 7.0 ns typ. at VCC = 3.3 V - Supports >100 MHz data routing in synchronous control paths with tight timing budgets. |
| IOL / IOH | 12 mA min. at VCC = 3.0 V - Drives 75 Ω transmission lines directly, eliminating external termination resistors in point-to-point links. |
| VOLP | 0.2 V typ. at VCC = 3.3 V, CL = 50 pF - Limits ground bounce and crosstalk in dense PCB layouts with multiple switching outputs. |
| ESD Immunity | 2 kV HBM - Protects against handling damage during board assembly and field service without external TVS diodes. |
| ICC Quiescent | 4 µA max. at TA = 25°C - Reduces standby power in battery-backed or always-on logic subsystems. |
| Propagation Skew | 0.5 ns typ. (tOSLH/tOSHL) - Ensures deterministic timing alignment across all four Y outputs for parallel data path selection. |
Pinout & Package
74LVQ157MTR is supplied in a 16-pin SOIC (Small Outline Integrated Circuit) package with tape-and-reel packaging (MTR suffix). Pin pitch is 1.27 mm, body width 3.9 mm, and total length 9.8–10.0 mm per mechanical drawing 0016020D.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | SELECT | Common 2:1 select control for all four multiplexers; active-HIGH logic determines whether A or B inputs pass to Y outputs. |
| 2, 5, 11, 14 | 1A–4A | Data inputs from Source A side; each connects to corresponding Y output when SELECT = LOW. |
| 3, 6, 10, 13 | 1B–4B | Data inputs from Source B side; each connects to corresponding Y output when SELECT = HIGH. |
| 4, 7, 9, 12 | 1Y–4Y | Independent multiplexer outputs; driven LOW when STROBE = HIGH, otherwise reflect selected A/B input. |
| 15 | STROBE | Global enable/disable input; HIGH forces all Y outputs LOW regardless of SELECT state - enables bus isolation. |
| 8 | GND | Dedicated ground reference for internal logic and output drivers; must be connected to system 0 V plane. |
| 16 | VCC | Primary power supply pin; accepts 2.0–3.6 V; decoupling capacitor (0.1 µF) required within 5 mm of this pin. |
Key Features
| Feature | Design Value |
|---|---|
| Symmetrical output drive | |IOH| = IOL ≥ 12 mA at VCC = 3.0 V - eliminates skew-induced duty-cycle distortion in clock/data distribution networks. |
| Balanced propagation delays | tPLH ≅ tPHL - ensures matched rise/fall timing critical for glitch-free sampling in synchronous logic interfaces. |
| PCI bus level guarantee | 24 mA drive capability - meets PCI Local Bus Specification Rev. 2.2 output current requirements for add-in card logic. |
| Low dynamic noise | VOLP = 0.2 V typ., VOLV = –0.2 V - suppresses simultaneous switching output (SSO) noise in multi-channel routing applications. |
| Enhanced latch-up immunity | Qualified per JEDEC JESD78 Class II - prevents destructive parasitic SCR activation during overvoltage transients. |
Applications
| PCI Add-In Card Data Routing | Industrial PLC I/O Multiplexing |
|---|---|
|
Use Scenario: Selecting between dual sensor data streams (e.g., primary/backup temperature sensors) before ADC sampling in a PCI-based measurement card. IC Role / Device Role / Timing Role: Quad 2:1 data selector synchronizing four analog front-end channels to a single ADC interface under shared SELECT/STROBE control. Use Value: Eliminates four discrete logic gates while maintaining <10 ns inter-channel skew and 24 mA drive for robust PCI slot signaling. |
Use Scenario: Consolidating discrete digital input signals from multiple machine safety sensors onto a centralized controller bus in an industrial PLC backplane. IC Role / Device Role / Timing Role: Low-power, ESD-hardened signal router enabling hot-swap-safe I/O expansion with deterministic 7 ns propagation delay. Use Value: Reduces board space by 60% vs. discrete 74LVX157 implementations and sustains operation across –40°C to +85°C ambient range. |
| Low-Voltage FPGA Configuration Bus | Automotive Body Control Module Logic |
|
Use Scenario: Switching between factory-programmed and field-upgradable configuration bitstreams for Xilinx Spartan-3 FPGAs operating at 3.3 V. IC Role / Device Role / Timing Role: Quad multiplexer enabling dual-image boot selection with STROBE-controlled bus isolation during reconfiguration. Use Value: Guarantees 1.2 V data retention during brown-out events and supports 100 k-cycle hot-plug cycles without latch-up. |
Use Scenario: Routing diagnostic signals from multiple door modules (window, lock, mirror) to a central BCM microcontroller via shared CAN/LIN interface logic. IC Role / Device Role / Timing Role: Noise-immune signal combiner meeting ISO 10605 ESD (25 kV air) and AEC-Q100 Grade 2 requirements. Use Value: Delivers 2 kV HBM ESD protection and 0.2 V VOLP to prevent false wake-up triggers in electrically noisy vehicle cabins. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad 2:1 multiplexer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74LV157APWR | TI part uses different C2MOS process; ICC = 20 µA max. (5× higher quiescent current); tPD = 7.5 ns typ. | Lacks 75 Ω line drive spec and PCI-level 24 mA guarantee; not qualified for automotive temp range. | Prefer where TI supply chain preference exists and PCI compliance is not required. |
| 74LVC157PW,118 | Nexperia part offers wider VCC range (1.65–3.6 V); CPD = 24 pF (vs. 32 pF); VOLP = 0.3 V typ. (higher noise). | Supports 1.8 V logic domains but has lower ESD rating (1.5 kV HBM) and no explicit PCI bus certification. | Choose for mixed-voltage systems needing 1.8 V compatibility, accepting trade-off in noise margin. |
Compared with SN74LV157APWR and 74LVC157PW,118, the 74LVQ157MTR uniquely combines PCI-bus drive assurance, 2 kV ESD hardening, and 0.2 V VOLP for high-integrity 3.3 V data routing-making it optimal for mission-critical industrial and computing interfaces where signal fidelity and reliability are non-negotiable.
Availability
74LVQ157MTR is available at Aetrix Electronics and suitable for PCI add-in card design, industrial PLC I/O consolidation, and automotive body control module development requiring stable component supply and long-term lifecycle support.
Supply support for 74LVQ157MTR includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, specializing in automotive, industrial, and power management ICs with vertical manufacturing capabilities and AEC-Q100 qualification expertise.
The 74LVQ series targets low-voltage, low-noise digital logic applications in computing and industrial control, emphasizing ESD robustness, transmission-line drive, and seamless migration from legacy 74LS/74HC families.
FAQ
What is the maximum recommended operating temperature for 74LVQ157MTR?
The 74LVQ157MTR is rated for continuous operation from –55°C to +125°C. Its DC and AC specifications are fully guaranteed across the industrial range (–40°C to +85°C), and extended temperature validation confirms functional stability up to +125°C with derated output drive (IOL/IOH ≥ 8 mA).
Can 74LVQ157MTR interface directly with 5 V TTL logic?
No - the 74LVQ157MTR is not 5 V tolerant. Its absolute maximum input voltage is VCC + 0.5 V, and VIH is specified only up to VCC (max 3.6 V). Direct connection to 5 V TTL outputs risks permanent damage; a level-shifting buffer such as TXB0104 is required for safe interfacing.
Does STMicroelectronics provide SPICE models for 74LVQ157MTR?
Yes - STMicroelectronics publishes IBIS models (74LVQ157.ibs) and simplified behavioral SPICE subcircuits for the 74LVQ157 family on its official website. These models include accurate I/O capacitance (CIN = 5 pF), propagation delay distributions, and output drive characteristics validated against production test data.
How does the STROBE pin behave during power-up sequencing?
During VCC ramp-up, the STROBE pin remains inactive until VCC exceeds 1.2 V (data retention threshold). Once powered, STROBE = HIGH forces all Y outputs LOW regardless of SELECT state - ensuring defined bus states during reset and preventing floating outputs during initialization.
74LVQ157MTR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- 74LVQ
- Package/Case:
- 16-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Multiplexer
- Circuit:
- 4 x 2:1
- Independent Circuits:
- 1
- Current - Output High, Low:
- 24mA, 24mA
- Voltage Supply Source:
- Single Supply
- Voltage - Supply:
- 2V ~ 3.6V
- Operating Temperature:
- -55°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-SO
74LVQ157MTR FAQ
1.How can I place an order for 74LVQ157MTR through Aetrix?
Please submit a Request for Quotation (RFQ) for 74LVQ157MTR on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for 74LVQ157MTR reliable?
The price and inventory of 74LVQ157MTR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74LVQ157MTR is usually 5 days.
3.What payment methods are accepted for 74LVQ157MTR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74LVQ157MTR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74LVQ157MTR?
74LVQ157MTR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74LVQ157MTR order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for 74LVQ157MTR?
For technical support, including 74LVQ157MTR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74LVQ157MTR requirements.
6.How does Aetrix verify that 74LVQ157MTR is sourced from the original manufacturer or authorized distributors?
All 74LVQ157MTR products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that 74LVQ157MTR meets industry standards.
7.What is the process for return or replacement of 74LVQ157MTR?
All 74LVQ157MTR units undergo pre-shipment inspection (PSI). If there is an issue with 74LVQ157MTR, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The 74LVQ157MTR part is unused and in its original packaging.
Return procedure for 74LVQ157MTR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
74LVQ157MTR Tags
-
SN74HC138DR
Texas Instruments
-
TC7SB3157CFU,LF(CT
Toshiba Semiconductor and Storage
-
74CBTLV3257PW,118
Nexperia USA Inc.
-
SN74CBTLV3257PWR
Texas Instruments
-
74CBTLV3257GUX
Nexperia USA Inc.
-
74HC154BQ,118
Nexperia USA Inc.
-
P3S0200GMX
NXP USA Inc.
-
SN74CB3Q3245PWR
Texas Instruments
-
SN74CB3Q3257RGYR
Texas Instruments
-
TCA9543APWR
Texas Instruments
-
TCA9546APWR
Texas Instruments
-
SN74HC138N
Texas Instruments
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
