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PDF TC74AC541F Data sheet ( Hoja de datos )

Número de pieza TC74AC541F
Descripción Octal Bus Buffer
Fabricantes Toshiba Semiconductor 
Logotipo Toshiba Semiconductor Logotipo



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TC74AC540,541P/F/FT
TOSHIBA CMOS Digital Integrated Circuit Silicon Monolithic
TC74AC540P,TC74AC540F,TC74AC540FT
TC74AC541P,TC74AC541F,TC74AC541FT
Octal Bus Buffer
TC74AC540P/F/FT
TC74AC541P/F/FT
Inverting, 3-State
Outputs
Non-Inverting, 3-State
Outputs
TC74AC540P, TC74AC541P
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.
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
TC74AC540F, TC74AC541F
TC74AC540FT, TC74AC541FT
Weight
DIP20-P-300-2.54A
SOP20-P-300-1.27A
TSSOP20-P-0044-0.65A
: 1.30 g (typ.)
: 0.22 g (typ.)
: 0.08 g (typ.)
1 2007-10-01

1 page




TC74AC541F pdf
TC74AC540,541P/F/FT
AC Characteristics (CL = 50 pF, RL = 500 , input: tr = tf = 3 ns)
Characteristics
Propagation delay
time (Note 2)
Propagation delay
time (Note 3)
Output enable time
Output disable time
Input capacitance
Output capacitance
Power dissipation
capacitance
Symbol
Test Condition
VCC (V)
tpLH
3.3 ± 0.3
tpHL 5.0 ± 0.5
tpLH
3.3 ± 0.3
tpHL 5.0 ± 0.5
tpZL
tpZH
3.3 ± 0.3
5.0 ± 0.5
tpLZ
tpHZ
3.3 ± 0.3
5.0 ± 0.5
CIN
COUT
CPD
TC74AC540
(Note 1) TC74AC541
Ta = 25°C
Min Typ. Max
6.8 10.5
4.7 7.0
6.8 11.4
4.7 7.5
9.6 15.8
6.4 10.0
7.7 12.3
6.4 9.2
5 10
10
25
28
Ta =
40 to 85°C
Min Max
1.0 12.0
1.0 8.0
1.0 13.0
1.0 8.5
1.0 18.0
1.0 11.4
1.0 14.0
1.0 10.5
10
――
――
――
Unit
ns
ns
ns
ns
pF
pF
pF
Note1: CPD is defined as the value of the internal equivalent capacitance which is calculated from the operating
current consumption without load.
Average operating current can be obtained by the equation:
ICC (opr) = CPD·VCC·fIN + ICC/8 (per bit)
Note 2: For TC74AC540 only
Note 3: For TC74AC541 only
5 2007-10-01

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