Quad 2-input AND gate in 14-TSSOP — the 5V glue-logic workhorse
The Texas Instruments SN74ACT08PWRG4 is a quad 2-input AND gate from the 74ACT series, a 5V CMOS logic family that combines the low power of CMOS with the output drive of bipolar TTL. Each of the four independent gates can source or sink 24mA, making this part suitable for driving multiple downstream logic inputs, LED indicators, or relay coil interfaces through a buffer stage. The supply range of 4.5V to 5.5V means it runs directly from a 5V rail without a regulator.
9 ns propagation delay — timing margin on a 5V bus
With a maximum propagation delay of 9 ns at 5V and 50 pF load, this gate adds about one standard 74-series gate delay per stage. In a 5V system clocked at 50 MHz (20 ns period), a 9 ns path leaves 11 ns for setup and hold — workable for most combinatorial glue logic, but budget it explicitly if the signal passes through two or three gates in series before reaching a flip-flop input.
14-TSSOP footprint — compact but needs a careful layout
Housed in a 14-TSSOP package with 0.173 inch body width and 4.40 mm height, this is a fine-pitch surface-mount part. The 0.65 mm lead pitch means the PCB land pattern must match the supplier's recommended footprint — a 0.30 mm pad width on a 0.65 mm pitch is typical. No exposed thermal pad, so the package's power dissipation is limited to what the leads and board copper can sink; at 24 mA per output driving a 50 pF load at 5V, junction temperature stays well within the -40°C to 85°C operating range.
Active lifecycle, ROHS3 — no sourcing risk for production
The SN74ACT08PWRG4 carries an active lifecycle status and ROHS3 compliance. There is no last-time-buy notice or end-of-life risk on this part, so it can be specified into new designs with confidence. The ROHS3 compliance covers the full EU exemption list, which simplifies global BOM approval.