74AHCT541A
Octal buffer/line driver; 3-state
Rev. 7 — 17 March 2017 Product data sheet
1 General description
The 74AHCT541A is an 8-bit buffer/line driver with 3-state outputs and TTL inputs.
The device features two output enables (OE1 and OE2). A HIGH on OEn causes the
associated outputs to assume a high-impedance OFF-state.
Designed to operate over a V
CC
range from 4.5 V to 5.5 V, the inputs are TTL
compatible, which allows the device to be used to translate from 3.3 V to 5 V.
Schmitt-trigger action at all inputs makes the circuit tolerant of slower input rise and fall
times.
This device is fully specified for partial Power-down applications using I
OFF
. The I
OFF
circuitry disables the output, preventing the damaging backflow current through the
device when it is powered down.
2 Features and benefits
• Direct interface with TTL levels
• Supply voltage range from 4.5 V to 5.5 V
• Typical t
pd
of 2.8 ns at 5 V
• Typical V
OL(p)
< 0.8 V at V
CC
= 5 V, T
amb
= 25 °C
• Typical V
OH(v)
> 2.3 V at V
CC
= 5 V, T
amb
= 25 °C
• Supports mixed-mode voltage operation on all ports
• I
OFF
circuitry provides partial Power-down mode operation
• Latch-up performance exceeds 250 mA per JESD 78 Class II
• ESD protection:
– HBM ANSI/ESDA/JEDEC JS-001 Class 2 exceeds 3kV
– MM JESD22-A115-A exceeds 200 V
– CDM JESD22-C101E exceeds 2kV
• Specified from -40 °C to +85 °C and from -40 °C to +125 °C
3 Ordering information
Table 1. Ordering information
PackageType number
Temperature
range
Name Description Version
74AHCT541APW -40 °C to +125 °C TSSOP20 plastic thin shrink small outline package;
20 leads; body width 4.4 mm
SOT360-1