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PDF 74VCX162373 Data sheet ( Hoja de datos )
| Número de pieza | 74VCX162373 | |
| Descripción | Low Voltage 16-Bit Transparent Latch with 3.6V Tolerant Inputs and Outputs and 26 Series Resistors in Outputs | |
| Fabricantes | Fairchild Semiconductor | |
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January 2000
Revised January 2000
74VCX162373
Low Voltage 16-Bit Transparent Latch
with 3.6V Tolerant Inputs and Outputs
and 26Ω Series Resistors in Outputs
General Description
The VCX162373 contains sixteen non-inverting latches
with 3-STATE outputs and is intended for bus oriented
applications. The device is byte controlled. The flip-flops
appear to be transparent to the data when the Latch enable
(LE) is HIGH. When LE is LOW, the data that meets the
setup time is latched. Data appears on the bus when the
Output Enable (OE) is LOW. When OE is HIGH, the out-
puts are in a high impedance state.
The VCX162373 is also designed with 26Ω resistors in the
outputs. This design reduces line noise in applications
such as memory address drivers, clock drivers and bus
transceivers/transmitters.
The 74VCX162373 is designed for low voltage (1.65V to
3.6V) VCC applications with I/O compatibility up to 3.6V.
The 74VCX162373 is fabricated with an advanced CMOS
technology to achieve high speed operation while maintain-
ing low CMOS power dissipation.
Features
s 1.65V–3.6V VCC supply operation
s 3.6V tolerant inputs and outputs
s 26Ω series resistors in outputs
s tPD (In to On)
3.3 ns max for 3.0V to 3.6V VCC
4.5 ns max for 2.3V to 2.7V VCC
9.0 ns max for 1.65V to 1.95V VCC
s Power-off high impedance inputs and outputs
s Support live insertion and withdrawal (Note 1)
s Static Drive (IOH/IOL)
±12 mA @ 3.0V VCC
±8 mA @ 2.3V VCC
±3 mA @ 1.65V VCC
s Uses patented noise/EMI reduction circuitry
s Latch-up performance exceeds 300 mA
s ESD performance:
Human body model > 2000V
Machine model > 200V
Note 1: To ensure the high-impedance state during power up or power
down, OE should be tied to VCC through a pull-up resistor; the minimum
value of the resistor is determined by the current-sourcing capability of the
driver.
Ordering Code:
Ordering Number
Package
Number
Package Description
74VCX162373MTD
MTD48
48-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 6.1mm Wide
Devices also available in Tape and Reel. Specify by appending suffix letter “X” to the ordering code.
Logic Symbol
Pin Descriptions
Pin Names
OEn
LEn
I0–I15
O0–O15
Description
Output Enable Input (Active LOW)
Latch Enable Input
Inputs
Outputs
© 2000 Fairchild Semiconductor Corporation DS500236
www.fairchildsemi.com
1 page  
AC Electrical Characteristics (Note 8)
T A = −40°C to +85°C, CL = 30 pF, RL = 500Ω
Symbol
Parameter
V CC = 3.3V ± 0.3V
V CC = 2.5V ± 0.2V
V CC = 1.8V ± 0.15V
Units
Min Max Min Max Min Max
tPHL, tPLH Prop Delay In to On
0.8 3.3 1.0 4.5 1.5 9.0 ns
tPHL, tPLH Prop Delay LE to On
0.8 3.6 1.0 4.9 1.5 9.8 ns
tPZL, tPZH Output Enable Time
0.8 3.9 1.0 5.4 1.5 9.8 ns
tPLZ, tPHZ Output Disable Time
0.8 4.0 1.0 4.4 1.5 7.9 ns
tS Setup Time
1.5 1.5 2.5
ns
tH Hold Time
1.0 1.0 1.0
ns
tW Pulse Width
1.5 1.5 4.0 ns
tOSHL
tOSLH
Output to Output Skew
(Note 9)
0.5 0.5 0.75 ns
Note 8: For CL = 50PF, add approximately 300 ps to the AC maximum specification.
Note 9: Skew is defined as the absolute value of the difference between the actual propagation delay for any two separate outputs of the same device. The
specification applies to any outputs switching in the same direction, either HIGH-to-LOW (tOSHL) or LOW-to-HIGH (tOSLH).
Dynamic Switching Characteristics
Symbol
Parameter
VOLP
Quiet Output Dynamic Peak VOL
VOLV
Quiet Output Dynamic Valley VOL
VOHV
Quiet Output Dynamic Valley VOH
Conditions
CL = 30 pF, VIH = VCC, VIL = 0V
CL = 30 pF, VIH = VCC, VIL = 0V
CL = 30 pF, VIH = VCC, VIL = 0V
V CC
(V)
1.8
2.5
3.3
1.8
2.5
3.3
1.8
2.5
3.3
TA = +25°C
Typical
0.15
0.25
0.35
−0.15
−0.25
−0.35
1.55
2.05
2.65
Units
V
V
V
Capacitance
Symbol
Parameter
CIN
COUT
CPD
Input Capacitance
Output Capacitance
Power Dissipation Capacitance
Conditions
VCC = 1.8V, 2.5V or 3.3V, VI = 0V or VCC
VI = 0V or VCC, VCC = 1.8V, 2.5V or 3.3V
VI = 0V or VCC, f = 10 MHz,
VCC = 1.8V, 2.5V or 3.3V
TA = +25°C
Typical
6
7
20
Units
pF
pF
pF
5 www.fairchildsemi.com
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| PDF Descargar | [ Datasheet 74VCX162373.PDF ] | |
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