TC74HCT540,541AP/AF
TOSHIBA CMOS Digital Integrated Circuit
Silicon Monolithic
TC74HCT540AP, TC74HCT540AF
TC74HCT541AP, TC74HCT541AF
Octal Bus Buffer with TTL Input Level
TC74HCT540AP/AF
Inverting, 3-State
Outputs
TC74HCT541AP/AF
Non-Inverting,
3-State Outputs
The TC74HCT540A/TC74HCT541A are high speed CMOS
OCTAL BUS BUFFERs fabricated with silicon gate C2MOS
technology.
These devices may be used as a level converter for interfacing
TTL or NMOS to High Speed CMOS. The inputs are compatible
with TTL, NMOS and CMOS output voltage levels.
They achive the high speed operation similar to equivalent
LSTTL while maintaing the CMOS low power dissipation.
The TC74HCT540A is an inverting type, and the
TC74HCT541A is a non-inverting type.
When either G1 or G2 are high, the terminal outputs are in
the high-impedance state.
All inputs are equipped with protection circuits against static
discharge or transient excess voltage.
Features
•
Wide interfacing ability: LSTTL, NMOS, CMOS
•
Output drive capability: 15 LSTTL loads
•
•
Symmetrical output impedance: |IOH| = IOL = 6 mA (min)
∼
Balanced propagation delays: tpLH − tpHL
•
: 1.30 g (typ.)
: 0.22 g (typ.)
Compatible with TTL outputs: VIL = 0.8 V (max)
VIH = 2.0 V (min)
•
Weight
DIP20-P-300-2.54A
SOP20-P-300-1.27A
Low power dissipation: ICC = 4 μA (max) at Ta = 25°C
•
TC74HCT540AF, TC74HCT541AF
High speed: tpd = 10 ns (typ.) at VCC = 5 V
•
TC74HCT540AP, TC74HCT541AP
Pin and function compatible with 74LS540/541
Start of commercial production
1988-11
1
2014-03-01
