The Texas Instruments SN74LVTH373PW is an 8-bit D-type transparent latch with tri-state outputs from the 74LVTH family. It captures data at the D inputs when the latch-enable (LE) input is high, and holds the last state when LE goes low. The tri-state output buffer lets multiple devices share a common bus — the output-enable (OE) pin puts all eight outputs into high-impedance when driven high. This part is designed for bus-interface applications where propagation delay and drive strength matter: memory-address latching, microcontroller I/O expansion, and backplane buffering in telecom or industrial control racks. The 2.7 ns propagation delay is the headline number for this latch. The 32 mA source / 64 mA sink output drive gives enough fan-out to drive a heavily loaded backplane or a bank of memory chips directly, without external buffers. The industrial temperature range (-40°C to 85°C) means it can sit in an outdoor telecom cabinet or on a factory-floor PLC backplane without derating concerns.
Texas Instruments 74LVTH series, SN74LVTH373PW, D-Type Transparent Latch, 8:8 circuit, Tri-State outputs, 20-TSSOP package, 2.7V ~ 3.6V supply, 2.7ns propagation delay, -40°C ~ 85°C.
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Specifications
| Parameter | Value |
|---|---|
| Series | 74LVTH |
| Logic type | D-Type Transparent Latch |
| Output type | Tri-State |
| Mounting type | Surface Mount |
| Voltage | 2.7V ~ 3.6V |
| Current - output high, low | 32mA, 64mA |
| Operating temperature | -40°C ~ 85°C |
| Circuit | 8:8 |
| Package | Tube |
| Case | 20-TSSOP (0.173\", 4.40mm Width) |
| Independent circuits | 1 |
| Delay time - propagation | 2.7ns |
Product details
Frequently asked questions
What is the difference between SN74LVTH373PW and SN74LVTH373PWR?
The SN74LVTH373PW ships in a tube; the SN74LVTH373PWR ships on tape and reel. The die, package, and electrical specifications are identical. Choose the PW for prototype or low-volume builds where tube handling is preferred; choose the PWR for automated pick-and-place assembly lines.
What is the equivalent of SN74LVTH373PW?
A functional equivalent in a different logic family is the 74FCT573APC, which is also an 8-bit D-type transparent latch with tri-state outputs. The 74FCT573APC runs from a 5 V supply (4.75 V nominal), has an 8.5 ns propagation delay, and comes in a through-hole DIP package with a 0°C to 70°C temperature range. It is not a pin-compatible drop-in replacement due to the different supply voltage and package, but it fills the same logic function for 5 V bus designs.