TC74AC540,541P/F/FW/FT
TOSHIBA CMOS Digital Integrated Circuit Silicon Monolithic
TC74AC540P,TC74AC540F,TC74AC540FW,TC74AC540FT
TC74AC541P,TC74AC541F,TC74AC541FW,TC74AC541FT
Octal Bus Buffer
TC74AC540P/F/FW/FT Inverting, 3-State
Outputs
TC74AC541P/F/FW/FT Non-Inverting, 3-State
Outputs
The TC74AC540/TC74AC541 are advanced high speed CMOS
OCTAL BUS BUFFERs fabricated with silicon gate and
double-layer metal wiring C2MOS technology.
They achieve the high speed operation similar to equivalent
Bipolar Schottky TTL while maintaining the CMOS low power
dissipation.
The TC74AC540 is an inverting type, and the TC74AC541 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.
Note: xxxFW (JEDEC SOP) is not available in
Japan.
TC74AC540P, TC74AC541P
TC74AC540F, TC74AC541F
Features
•
High speed: tpd = 4.0 ns (typ.) at VCC = 5 V
•
Low power dissipation: ICC = 8 µA (max) at Ta = 25°C
•
High noise immunity: VNIH = VNIL = 28% VCC (min)
•
•
Symmetrical output impedance: |IOH| = IOL = 24 mA (min)
Capability of driving 50 Ω
transmission lines.
∼
Balanced propagation delays: tpLH − tpHL
•
Wide operating voltage range: VCC (opr) = 2 to 5.5 V
•
Pin and function compatible with 74F540/541
TC74AC540FW, TC74AC541FW
TC74AC540FT, TC74AC541FT
Weight
DIP20-P-300-2.54A
SOP20-P-300-1.27A
SOP20-P-300-1.27
SOL20-P-300-1.27
TSSOP20-P-0044-0.65A
: 1.30 g (typ.)
: 0.22 g (typ.)
: 0.22 g (typ.)
: 0.46 g (typ.)
: 0.08 g (typ.)
1
2006-06-01
TC74AC540,541P/F/FW/FT
Absolute Maximum Ratings (Note 1)
Characteristics
Symbol
Rating
Unit
Supply voltage range
VCC
−0.5 to 7.0
V
DC input voltage
VIN
−0.5 to VCC + 0.5
V
DC output voltage
VOUT
−0.5 to VCC + 0.5
V
Input diode current
IIK
±20
mA
Output diode current
IOK
±50
mA
DC output current
IOUT
±50
mA
DC VCC/ground current
ICC
±200
mA
Power dissipation
PD
500 (DIP) (Note 2)/180 (SOP/TSSOP)
mW
Storage temperature
Tstg
−65 to 150
°C
Note1:
Exceeding any of the absolute maximum ratings, even briefly, lead to deterioration in IC performance or
even destruction.
Note2:
500 mW in the range of Ta = −40 to 65°C. From Ta = 65 to 85°C a derating factor of −10 mW/°C should be
applied up to 300 mW.
Recommended Operating Conditions (Note)
Characteristics
Symbol
Rating
Unit
Supply voltage
VCC
2.0 to 5.5
V
Input voltage
VIN
0 to VCC
V
Output voltage
VOUT
0 to VCC
V
Operating temperature
Topr
−40 to 85
°C
Input rise and fall time
dt/dV
Note:
0 to 100 (VCC = 3.3 ± 0.3 V)
0 to 20 (VCC = 5 ± 0.5 V)
ns/V
The recommended operating conditions are required to ensure the normal operation of the device.
Unused inputs must be tied to either VCC or GND.
3
2006-06-01
