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PDF TC74LCX16244AFT Data sheet ( Hoja de datos )

Número de pieza TC74LCX16244AFT
Descripción LOW-VOLTAGE 16-BIT BUS BUFFER WITH 5V TOLERANT INPUTS AND OUTPUTS
Fabricantes Toshiba Semiconductor 
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TC74LCX16244AFT
TOSHIBA CMOS Digital Integrated Circuit Silicon Monolithic
TC74LCX16244AFT
Low-Voltage 16-Bit Bus Buffer with 5-V Tolerant Inputs and Outputs
The TC74LCX16244AFT is a high-performance CMOS 16-bit
bus buffer. Designed for use in 3.3-V systems, it achieves
high-speed operation while maintaining the CMOS low power
dissipation.
The device is designed for low-voltage (3.3 V) VCC applications,
but it could be used to interface to 5 V supply environment for
both inputs and outputs.
This device is non-inverting 3-state buffer having four
active-low output enables. It can be used as four 4-bit buffers two
8-bit buffers or one 16-bit buffer. When the OE input is high, the
outputs are in a high-impedance state. This device is designed to
be used with 3-state memory address drivers, etc.
All inputs are equipped with protection circuits against static
discharge.
Weight: 0.25 g (typ.)
Features
· Low-voltage operation: VCC = 2.0 to 3.6 V
· High-speed operation: tpd = 5.2 ns (max) (VCC = 3.0 to 3.6 V)
· Output current: |IOH|/IOL = 24 mA (min) (VCC = 3.0 V)
www.DataSheet4U.com· Latch-up performance: ±500 mA
· Package: TSSOP (thin shrink small outline package)
· Power-down protection provided on all inputs and outputs
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1 2002-01-11
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TC74LCX16244AFT pdf
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Electrical Characteristics
DC Characteristics (Ta = -40 to 85°C)
TC74LCX16244AFT
Characteristics
Symbol
Test Condition
Min
VCC (V)
Input voltage
H-level
L-level
VIH
VIL
¾ 2.7 to 3.6 2.0
¾ 2.7 to 3.6 ¾
IOH = -100 mA
2.7 to 3.6
VCC
- 0.2
H-level
VOH VIN = VIH or VIL
IOH = -12 mA
IOH = -18 mA
2.7 2.2
3.0 2.4
Output voltage
IOH = -24 mA
IOL = 100 mA
3.0
2.7 to 3.6
2.2
¾
L-level
VOL VIN = VIH or VIL
IOL = 12 mA
IOL = 16 mA
2.7 ¾
3.0 ¾
IOL = 24 mA
3.0 ¾
Input leakage current
IIN VIN = 0 to 5.5 V
2.7 to 3.6 ¾
3-state output off-state current
VIN = VIH or VIL
IOZ
VOUT = 0 to 5.5 V
2.7 to 3.6 ¾
Power off leakage current
IOFF VIN/VOUT = 5.5 V
0¾
Quiescent supply current
VIN = VCC or GND
ICC
VIN/VOUT = 3.6 to 5.5 V
2.7 to 3.6
2.7 to 3.6
¾
¾
www.DataSheet4U.comIncrease in Icc per input
DICC VIH = VCC - 0.6 V
2.7 to 3.6 ¾
AC Characteristics (Ta = -40 to 85°C)
Max
¾
0.8
¾
¾
¾
¾
0.2
0.4
0.4
0.55
±5.0
±5.0
10.0
20.0
±20.0
500
Unit
V
V
mA
mA
mA
mA
Characteristics
Propagation delay time
3-state output enable time
3-state output disable time
Output to output skew
Symbol
Test Condition
Min Max Unit
VCC (V)
tpLH Figure 1, Figure 2
tpHL
2.7
3.3 ± 0.3
¾
1.5
6.2
5.2
ns
tpZL
tpZH
Figure 1, Figure 3
2.7
3.3 ± 0.3
¾
1.5
7.5
6.5
ns
tpLZ
tpHZ
Figure 1, Figure 3
2.7
3.3 ± 0.3
¾
1.5
6.5
5.5
ns
tosLH
tosHL
2.7 ¾ ¾
(Note 10)
ns
3.3 ± 0.3 ¾
1.0
Note 10: Parameter guaranteed by design.
(tosLH = |tpLHm - tpLHn|, tosHL = |tpHLm - tpHLn|)
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