74ALVTH16373VRE4 Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
The 74ALVTH16373VRE4 is a 16-bit transparent D-type latch from Texas Instruments in the ALVTH logic family, operating at 2.5 V or 3.3 V with 24 mA output drive. It features active-low output enable control and is housed in a 48-pin SOIC package for high-density bus interface applications.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 48
- Lifecycle
- OBSOLETE
- Datasheet
- 74ALVTH16373VRE4 Datasheet PDF
- Category
- Integrated Circuit
- Temp Range
- -40.0°C to 85.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of 74ALVTH16373VRE4?
- 16-bit transparent D-type latch with active-low output enable and 24 mA output current, providing robust bus driving capability for 16-bit wide address/data bus interfaces
- Dual-supply compatibility at 2.5 V and 3.3 V in the ALVTH family enables seamless integration between mixed-voltage logic systems without level-translation ICs
- 48-pin SOIC package with 30 pF load rating supports high-speed, low-skew 16-bit data latching for FPGA, DSP, and microprocessor memory interface designs
What is 74ALVTH16373VRE4 used for?
The 74ALVTH16373VRE4 is used in microprocessor and FPGA memory interfaces to demultiplex a shared 16-bit address/data bus, latching addresses on the rising edge of an ALE signal so the memory controller can release the bus for data transfer. It fits PCI and local bus expanders in embedded computing where 2.5 V FPGA I/O drives a 3.3 V logic bus through the same device. Its 24 mA output drive also supports multi-load backplane topologies where several memory banks share a common 16-bit data bus.
What are the specifications of 74ALVTH16373VRE4?
| YTEOL | 0 |
| Additional Feature | ALSO OPERATES WITH 3.3V SUPPLY |
| Control Type | ENABLE LOW |
| Count Direction | UNIDIRECTIONAL |
| Family | ALVT |
| JESD-30 Code | R-PDSO-G48 |
| JESD-609 Code | e4 |
| Load Capacitance (CL) | 30pF |
| Logic IC Type | BUS DRIVER |
| Max I(ol) | 0.024A |
| Number of Bits | 8 |
| Number of Functions | 2 |
| Number of Ports | 2 |
| Output Characteristics | 3-STATE |
| Output Polarity | TRUE |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | TSSOP48,.25,16 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE, THIN PROFILE, SHRINK PITCH |
| Packing Method | TR |
| Peak Reflow Temperature (Cel) | 260 |
| Power Supply Current-Max (ICC) | 4.5mA |
| Prop. Delay@Nom-Sup | 4.2ns |
| Propagation Delay (tpd) | 4.5ns |
| Qualification Status | Not Qualified |
| Supply Voltage-Max (Vsup) | 2.7V |
| Supply Voltage-Min (Vsup) | 2.3V |
| Supply Voltage-Nom (Vsup) | 2.5V |
| Surface Mount | YES |
| Technology | BICMOS |
| Temperature Grade | INDUSTRIAL |
| Terminal Finish | NICKEL PALLADIUM GOLD |
| Terminal Form | GULL WING |
| Terminal Pitch | 0.4mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 30 |
| Trigger Type | HIGH LEVEL |
| Package | Small Outline Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| HTS Code | 8542.39.00.60 |
Where can I find the 74ALVTH16373VRE4 datasheet?
74ALVTH16373VRE4 Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for 74ALVTH16373VRE4?
Compatible alternatives and drop-in replacements for 74ALVTH16373VRE4:
Bus Driver, ALVT Series, 2-Func, 8-Bit, True Output, BICMOS, PDSO48
Bus Driver, ALVT Series, 2-Func, 8-Bit, True Output, BICMOS, PDSO48
Frequently Asked Questions
What output drive current does 74ALVTH16373VRE4 provide and how many bus loads can it support?
The 74ALVTH16373VRE4 sources and sinks 24 mA per output, which allows it to drive a 16-bit bus with up to 4–6 standard CMOS receivers presenting 30 pF each, maintaining valid logic levels at 3.3 V across typical PCB trace lengths of up to 10 cm at moderate switching frequencies.
How does the transparent latch mode of 74ALVTH16373VRE4 work in a multiplexed address/data bus demultiplexer?
While the latch-enable input is high, all 16 D inputs pass transparently to Q outputs; when latch-enable goes low, the current input state is frozen on the Q outputs regardless of further D input changes, capturing the 16-bit address during the multiplexed ALE pulse and holding it stable while the same bus lines carry data.
Can 74ALVTH16373VRE4 interface a 2.5 V FPGA to a 3.3 V memory bus without external level shifters?
Yes, the ALVTH-family 74ALVTH16373VRE4 accepts input levels compatible with both 2.5 V LVTTL and 3.3 V LVCMOS standards and drives output levels meeting 3.3 V LVCMOS specs, allowing direct connection between a 2.5 V FPGA and a 3.3 V SRAM or flash memory bus across all 16 bits without additional translation circuitry.
What is the pin count of 74ALVTH16373VRE4 and how does that impact PCB layout versus two 8-bit latches?
The 74ALVTH16373VRE4 has 48 pins in a single SOIC package, integrating all 16 latch bits plus control signals in one device, whereas two 8-bit 20-pin SOIC latches would occupy roughly twice the PCB area and require matched routing for simultaneous enable timing across both packages.
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About Texas Instruments
Texas Instruments (TI) is a global semiconductor company headquartered in Dallas, Texas. TI designs and manufactures analog and embedded processing chips used in industrial, automotive, consumer, communications, and enterprise systems.
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