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74VCX162839 PDF даташит

Спецификация 74VCX162839 изготовлена ​​​​«Fairchild Semiconductor» и имеет функцию, называемую «Low Voltage 20-Bit Selectable Register/Buffer with 3.6V Tolerant Inputs and Outputs and 26 Series Resistors in the Outputs».

Детали детали

Номер произв 74VCX162839
Описание Low Voltage 20-Bit Selectable Register/Buffer with 3.6V Tolerant Inputs and Outputs and 26 Series Resistors in the Outputs
Производители Fairchild Semiconductor
логотип Fairchild Semiconductor логотип 

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74VCX162839 Даташит, Описание, Даташиты
March 1998
Revised December 2000
74VCX162839
Low Voltage 20-Bit Selectable Register/Buffer
with 3.6V Tolerant Inputs/Outputs
and 26Series Resistors in the Outputs
General Description
Features
The VCX162839 contains twenty non-inverting selectable
buffered or registered paths. The device can be configured
to operate in a registered, or flow through buffer mode by
utilizing the register enable (REGE) and Clock (CLK) sig-
nals. The device operates in a 20-bit word wide mode. All
outputs can be placed into 3-STATE through use of the OE
pin. These devices are ideally suited for buffered or regis-
tered 168 pin and 200 pin SDRAM DIMM memory mod-
ules.
The 74VCX162839 is designed for low voltage (1.65V to
3.6V) VCC applications with I/O compatibility up to 3.6V.
The 74VCX162839 is also designed with 26series resis-
tors in the outputs. This design reduces line noise in appli-
cations such as memory address drivers, clock drivers, and
bus transceivers/transmitters.
s Compatible with PC100 and PC133 DIMM module
specifications
s 1.65V–3.6V VCC supply operation
s 3.6V tolerant inputs and outputs
s 26series resistors in the outputs
s tPD (CLK to On)
4.1 ns max for 3.0V to 3.6V VCC
5.8 ns max for 2.3V to 2.7V VCC
9.8 ns max for 1.65V to 1.95V VCC
s Power-off high impedance inputs and outputs
s Supports live insertion and withdrawal (Note 1)
s Static Drive (IOH/IOL)
The 74VCX162839 is fabricated with an advanced CMOS
±12 mA @ 3.0V VCC
technology to achieve
ing low CMOS power
high speed
dissipation.
operation
while
maintawinw-w.DataSheet4±U8.comm A
@ 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:
Order Number Package Number
Package Description
74VCX162839MTD
MTD56
56-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 Xto the ordering code.
Logic Symbol
Pin Descriptions
Pin Names
OE
I0I19
O0O19
CLK
REGE
Description
Output Enable Input (Active LOW)
Inputs
Outputs
Clock Input
Register Enable Input
© 2000 Fairchild Semiconductor Corporation DS500127
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74VCX162839 Даташит, Описание, Даташиты
Connection Diagram
Logic Diagram
Truth Table
Inputs
Outputs
CLK
REGE
In
HH
HL
XLH
XLL
XXX
H = Logic HIGH
L = Logic LOW
X = Dont Care, but not floating
Z = High Impedance
↑ = LOW-to-HIGH Clock Transition
OE On
LH
LL
LH
LL
HZ
Functional Description
The 74VCX162839 consists of twenty selectable non-
inverting buffers or registers with word wide modes. Mode
functionality is selected through operation of the CLK and
REGE pin as shown by the truth table. When REGE is held
at a logic HIGH the device operates as a 20-bit register.
Data is transferred from In to On on the rising edge of the
CLK input. When the REGE pin is held at a logic LOW the
device operates in a flow through mode and data propa-
gates directly from the In to the On outputs. All outputs can
be 3-stated by holding the OE pin at a logic HIGH.
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74VCX162839 Даташит, Описание, Даташиты
Absolute Maximum Ratings(Note 2)
Supply Voltage (VCC)
DC Input Voltage (VI)
Output Voltage (VO)
Outputs 3-STATE
Outputs Active (Note 3)
DC Input Diode Current (IIK) VI < 0V
DC Output Diode Current (IOK)
VO < 0V
VO > VCC
DC Output Source/Sink Current
(IOH/IOL)
DC VCC or GND Current per
Supply Pin (ICC or GND)
Storage Temperature Range (TSTG)
0.5V to +4.6V
0.5V to +4.6V
0.5V to +4.6V
0.5V to VCC + 0.5V
50 mA
50 mA
+50 mA
±50 mA
±100 mA
65°C to +150°C
Recommended Operating
Conditions (Note 4)
Power Supply
Operating
1.65V to 3.6V
Data Retention Only
1.2V to 3.6V
Input Voltage
0.3V to +3.6V
Output Voltage (VO)
Output in Active States
Output in OFFState
0V to VCC
0V to 3.6V
Output Current in IOH/IOL
VCC = 3.0V to 3.6V
VCC = 2.3V to 2.7V
VCC = 1.65V to 2.3V
Free Air Operating Temperature (TA)
Minimum Input Edge Rate (t/V)
±12 mA
±8 mA
±3 mA
40°C to +85°C
VIN = 0.8V to 2.0V, VCC = 3.0V
10 ns/V
Note 2: The Absolute Maximum Ratings are those values beyond which
the safety of the device cannot be guaranteed. The device should not be
operated at these limits. The parametric values defined in the Electrical
Characteristics tables are not guaranteed at the Absolute Maximum Rat-
ings. The Recommended Operating Conditionstable will define the condi-
tions for actual device operation.
Note 3: IO Absolute Maximum Rating must be observed.
Note 4: Floating or unused inputs must be held HIGH or LOW.
DC Electrical Characteristics (2.7V < VCC 3.6V)
Symbol
Parameter
VIH HIGH Level Input Voltage
VIL LOW Level Input Voltage
VOH HIGH Level Output Voltage
VOL LOW Level Output Voltage
II Input Leakage Current
IOZ 3-STATE Output Leakage
IOFF Power-OFF Leakage Current
ICC Quiescent Supply Current
ICC
Increase in ICC per Input
Note 5: Outputs disabled or 3-STATE only.
Conditions
IOH = −100 µA
IOH = −6 mA
IOH = −8 mA
IOH = −12 mA
IOL = 100 µA
IOL = 6 mA
IOL = 8 mA
IOL = 12 mA
0V VI 3.6V
0V VO 3.6V
VI = VIH or VIL
0V (VI, VO) 3.6V
VI = VCC or GND
VCC (VI, VO) 3.6V (Note 5)
VIH = VCC 0.6V
VCC
(V)
2.7 3.6
2.7 3.6
2.7 3.6
2.7
3.0
3.0
2.7 3.6
2.7
3.0
3.0
2.7 3.6
Min
2.0
VCC 0.2
2.2
2.4
2.2
2.7 3.6
0
2.7 3.6
2.7 3.6
Max
0.8
0.2
0.4
0.55
0.8
±5.0
±10
10
20
±20
750
Units
V
V
V
V
µA
µA
µA
µA
µA
3 www.fairchildsemi.com










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