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PDF 74LCX652WM Data sheet ( Hoja de datos )
| Número de pieza | 74LCX652WM | |
| Descripción | Low Voltage Transceiver/Register with 5V Tolerant Inputs and Outputs | |
| Fabricantes | Fairchild Semiconductor | |
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February 1994
Revised April 1999
74LCX652
Low Voltage Transceiver/Register with 5V Tolerant
Inputs and Outputs
General Description
The LCX652 consists of bus transceiver circuits with D-
type flip-flops, and control circuitry arranged for multiplexed
transmission of data directly from the input bus or from
internal registers. Data on the A or B bus will be clocked
into the registers as the appropriate clock pin goes to the
HIGH logic level. Output Enable pins (OEAB, OEBA) are
provided to control the transceiver function.
The LCX652 is designed for low voltage (2.5V or 3.3V) VCC
applications with capability of interfacing to a 5V signal
environment.
The LCX652 is fabricated with an advanced CMOS tech-
nology to achieve high speed operation while maintaining
CMOS low power dissipation.
Features
s 5V tolerant inputs and outputs
s 2.3V − 3.6V VCC specifications provided
s 7.0 ns tPD max (VCC = 3.3V), 10 µA ICC max
s Power down high impedance inputs and outputs
s Supports live insertion/withdrawal (Note 1)
s ±24 mA output drive (VCC = 3.0V)
s Implements patented noise/EMI reduction circuitry
s Latch-up performance exceeds 500 mA
s ESD performance:
Human body model > 2000V
Machine model > 200V
Note 1: To ensure the high-impedance state during power up or down, OE
should be tied to VCC through a pull-up resistor: the minimum value or the
resistor is determined by the current-sourcing capability of the driver.
Ordering Code:
Order Number
74LCX652WM
74LCX652MSA
74LCX652MTC
Package Number
Package Description
M24B
24-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300” Wide
MSA24
24-Lead Shrink Small Outline Package (SSOP), EIAJ TYPE II, 5.3mm Wide
MTC24
24-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide
Devices also available in Tape and Reel. Specify by appending the suffix letter “X” to the ordering code.
Connection Diagram
Pin Descriptions
Pin Names
A0–A7, B0–B7
CPAB, CPBA
SAB, SBA
OEAB, OEBA
Description
A and B Inputs/3-STATE Outputs
Clock Inputs
Select Inputs
Output Enable Inputs
© 1999 Fairchild Semiconductor Corporation DS011998.prf
www.fairchildsemi.com
1 page  
Absolute Maximum Ratings(Note 3)
Symbol
Parameter
VCC Supply Voltage
VI DC Input Voltage
VO DC Output Voltage
IIK DC Input Diode Current
IOK DC Output Diode Current
IO
ICC
IGND
TSTG
DC Output Source/Sink Current
DC Supply Current per Supply Pin
DC Ground Current per Ground Pin
Storage Temperature
Value
−0.5 to +7.0
−0.5 to +7.0
−0.5 to +7.0
−0.5 to VCC + 0.5
−50
−50
+50
±50
±100
±100
−65 to +150
Conditions
Output in 3-STATE
Output in HIGH or LOW State (Note 4)
VI < GND
VO < GND
VO > VCC
Recommended Operating Conditions (Note 5)
Units
V
V
V
mA
mA
mA
mA
mA
°C
Symbol
Parameter
Min Max Units
VCC Supply Voltage
Operating
Data Retention
2.0
1.5
3.6
3.6
V
VI Input Voltage
VO Output Voltage
HIGH or LOW State
3-STATE
0
0
0
5.5
VCC
5.5
V
V
IOH/IOL Output Current
VCC = 3.0V − 3.6V
±24
VCC = 2.7V − 3.0V
±12 mA
VCC = 2.3V − 2.7V
±8
TA Free-Air Operating Temperature
−40 85
°C
∆t/∆V
Input Edge Rate, VIN = 0.8V − 2.0V, VCC = 3.0V
0 10 ns/V
Note 3: 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 Ratings. The “Recom-
mended Operating Conditions” table will define the conditions for actual device operation.
Note 4: IO Absolute Maximum Rating must be observed.
Note 5: Unused inputs or I/Os must be held HIGH or LOW. They may not float.
DC Electrical Characteristics
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 I/O Leakage
IOFF Power-Off Leakage Current
Conditions
IOH = −100 µA
IOH = −8 mA
IOH = −12 mA
IOH = −18 mA
IOH = −24 mA
IOL = 100 µA
IOL = 8 mA
IOL = 12 mA
IOL = 16 mA
IOL = 24 mA
0 ≤ VI ≤ 5.5V
0 ≤ VO ≤ 5.5V
VI = VIH or VIL
VI or VO = 5.5V
VCC
(V)
2.3 − 2.7
2.7 − 3.6
2.3 − 2.7
2.7 − 3.6
2.3 − 3.6
2.3
2.7
3.0
3.0
2.3 − 3.6
2.3
2.7
3.0
3.0
2.3 − 3.6
2.3 − 3.6
TA = −40°C to +85°C
Min Max
1.7
2.0
0.7
0.8
VCC − 0.2
1.8
2.2
2.4
2.2
0.2
0.6
0.4
0.4
0.55
±5.0
±5.0
0 10
Units
V
V
V
V
µA
µA
µA
5 www.fairchildsemi.com
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