TC74VHC540,541F/FT/FK
2014-03-01
1
TOSHIBA CMOS Digital Integrated Circuit Silicon Monolithic
TC74VHC540F, TC74VHC540FT, TC74VHC540FK
TC74VHC541F, TC74VHC541FT, TC74VHC541FK
Octal Bus Buffer
TC74VHC540F/FT/FK
Inverted, 3-State Outputs
TC74VHC541F/FT/FK
Non-Inverted, 3-State Outputs
The TC74VHC540/TC74VHC541 are advanced high speed
CMOS OCTAL BUS BUFFERs fabricated with silicon gate
C
2
MOS technology.
They achieve the high speed operation similar to equivalent
Bipolar Schottky TTL while maintaining the CMOS low power
dissipation.
The TC74VHC540 is an inverting type, and the TC74VHC541
is a non-inverting type.
When either
1G
or
2G
are high, the terminal outputs are in
the high-impedance state.z
An input protection circuit ensures that 0 to 5.5 V can be
applied to the input pins without regard to the supply voltage.
This device can be used to interface 5 V to 3 V systems and two
supply systems such as battery back up. This circuit prevents
device destruction due to mismatched supply and input voltages.
Features
• High speed: t
pd
= 3.7 ns (typ.) at V
CC
= 5 V
• Low power dissipation: I
CC
= 4 μA (max) at Ta = 25°C
• High noise immunity: V
NIH
= V
NIL
= 28% V
CC
(min)
• Power down protection is provided on all inputs.
• Balanced propagation delays: t
pLH
∼
−
t
pHL
• Wide operating voltage range: V
CC (opr)
= 2 V to 5.5 V
• Low noise: V
OLP
= 1.0 V (max)
• Pin and function compatible with 74ALS540/541
TC74VHC540F, TC74VHC541F
TC74VHC540FT, TC74VHC541FT
TC74VHC540FK, TC74VHC541FK
Weight
SOP20-P-300-1.27A : 0.22 g (typ.)
TSSOP20-P-0044-0.65A : 0.08 g (typ.)
VSSOP20-P-0030-0.50 : 0.03 g (typ.)
Start of commercial production
1991-05
