TI CY74FCT163245APVCT 16-bit transceiver Datasheet

Data sheet acquired from Cypress Semiconductor Corporation.
Data sheet modified to remove devices not offered.
CY74FCT163245
CY74FCT163H245
16-Bit Transceivers
SCCS051 - February 1997 - Revised March 2000
Features
Functional Description
• Low power, pin-compatible replacement for LCX and
LPT families
• 5V tolerant inputs and outputs
• 24 mA balanced drive outputs
• Power-off disable outputs permits live insertion
• Edge-rate control circuitry for reduced noise
• FCT-C speed at 4.1 ns
• Latch-up performance exceeds JEDEC standard no. 17
• Typical output skew < 250ps
• Industrial temperature range of –40˚C to +85˚C
• TSSOP (19.6-mil pitch) or SSOP (25-mil pitch)
• Typical Volp (ground bounce) performance exceeds Mil
Std 883D
• VCC = 2.7V to 3.6V
• ESD (HBM) > 2000V
CY74FCT163H245
• Bus hold on data inputs
• Eliminates the need for external pull-up or pull-down
resistors
• Devices with bus hold are not recommended for translating rail-to-rail CMOS signals to 3.3V logic levels
These 16-bit transceivers are designed for use in bidirectional
synchronous communication between two buses, where high
speed and low power are required. Direction of data flow is
controlled by (DIR), the Output Enable (OE) transfers data
when LOW and isolates the buses when HIGH. The outputs
are 24-mA balanced output drivers with current limiting
resistors to reduce the need for external terminating resistors
and provide for minimal undershoot and reduced ground
bounce..
The CY74FCT163H245 has “bus hold” on the data inputs,
which retains the input’s last state whenever the input goes to
high impedance. This eliminates the need for pull-up/down
resistors and prevents floating inputs.
The CY74FCT163245 is designed with inputs and outputs
capable of being driven by 5.0V buses, allowing its use in
mixed voltage systems as a translator. The outputs are also
designed with a power off disable feature enabling its use in
applications requiring live insertion.
Logic Block Diagrams CY74FCT163245, CY74FCT163H245
1DIR
Pin Configuration
SSOP/TSSOP
Top View
2DIR
1OE
1A1
2OE
1DIR
1
48
1OE
1B1
2
3
47
46
1A1
GND
1B3
4
5
45
44
GND
1A3
1B4
6
43
1A4
2B2
VCC
1B5
7 163245 42
8 163H245 41
VCC
1A5
1B6
9
40
1A6
2B3
GND
10
GND
1B7
11
39
38
1B8
12
13
37
36
1A8
GND
14
15
35
34
GND
2B3
16
33
2A3
2B4
17
32
2A4
VCC
2B5
18
31
19
30
VCC
2A5
2A1
1B1
1A2
1B2
2B1
2A2
1B2
1A3
2A3
1B3
1A4
2A4
1B4
1A5
2B4
2B1
2B2
2A5
1B5
1A6
2B5
2A6
1B6
1A7
2B6
2A7
1B7
1A8
2B7
2A8
1B8
2B8
Copyright
1A2
1A7
2A1
2A2
2B6
20
29
2A6
GND
21
28
GND
2B7
22
27
2A7
2B8
23
26
2A8
2DIR
24
25
2OE
© 2000, Texas Instruments Incorporated
CY74FCT163245
CY74FCT163H245
Maximum Ratings[3, 4]
Pin Description
Name
(Above which the useful life may be impaired. For user guidelines, not tested.)
Storage Temperature ................................. –55°C to +125°C
Description
OE
Three-State Output Enable Inputs (Active LOW)
DIR
Direction Control
A
Inputs or Three-State Outputs[1]
Ambient Temperature with
Power Applied............................................. –55°C to +125°C
B
Inputs or Three-State Outputs[1]
Supply Voltage Range ........................................0.5V to 4.6V
DC Input Voltage ........................................... –0.5V to +7.0V
Function Table[2]
DC Output Voltage......................................... –0.5V to +7.0V
Inputs
DC Output Current
(Maximum Sink Current/Pin) ........................–60 to +120 mA
OE
DIR
Outputs
L
L
Bus B Data to Bus A
L
H
Bus A Data to Bus B
H
X
High Z State
Power Dissipation .......................................................... 1.0W
Operating Range
Range
Industrial
Ambient
Temperature
VCC
–40°C to +85°C
2.7V to 3.6V
Electrical Characteristics for Non Bus Hold Devices Over the Operating Range VCC=2.7V to 3.6V
Parameter
Description
Test Conditions
VIH
Input HIGH Voltage
VIL
Input LOW Voltage
All Inputs
VH
Input
Hysteresis[6]
VIK
Input Clamp Diode Voltage
VCC=Min., IIN=–18 mA
IIH
Input HIGH Current
IIL
Min.
Typ.[5]
2.0
Max.
Unit
5.5
V
0.8
V
100
–0.7
mV
–1.2
V
VCC=Max., VI=5.5
±1
µA
Input LOW Current
VCC=Max., VI=GND
±1
µA
IOZH
High Impedance Output Current
(Three-State Output pins)
VCC=Max., VOUT=5.5V
±1
µA
IOZL
High Impedance Output Current
(Three-State Output pins)
VCC=Max., VOUT=GND
±1
µA
IOS
Short Circuit Current[7]
VCC=Max., VOUT=GND
–240
mA
IOFF
Power-Off Disable
VCC=0V, VOUT≤4.5V
±100
µA
ICC
Quiescent Power Supply Current
VIN≤0.2V,
VIN>VCC–0.2V
VCC=Max.
0.1
10
µA
∆ICC
Quiescent Power Supply Current
(TTL inputs HIGH)
VIN=VCC–0.6V[8]
VCC=Max.
2.0
30
µA
–60
–135
Note:
1. On the CY74FCT163H245, these pins have bus hold.
2. H = HIGH Voltage Level. L = LOW Voltage Level. X = Don’t Care. Z = High Impedance.
3. Operation beyond the limits set forth may impair the useful life of the device. Unless otherwise noted, these limits are over the operating free-air temperature
range.
4. Unused inputs must always be connected to an appropriate logic voltage level, preferably either VCC or ground.
5. Typical values are at VCC=3.3V, TA = +25˚C ambient.
6. This parameter is specified but not tested.
7. Not more than one output should be shorted at a time. Duration of short should not exceed one second. The use of high-speed test apparatus and/or sample
and hold techniques are preferable in order to minimize internal chip heating and more accurately reflect operational values. Otherwise prolonged shorting of
a high output may raise the chip temperature well above normal and thereby cause invalid readings in other parametric tests. In any sequence of parameter
tests, IOS tests should be performed last.
8. Per TTL driven input; all other inputs at VCC or GND.
2
CY74FCT163245
CY74FCT163H245
Electrical Characteristics For Bus Hold Devices Over the Operating Range VCC=2.7V to 3.6V
Parameter
Description
Test Conditions
VIH
Input HIGH Voltage
All Inputs
VIL
Input LOW Voltage
VH
Input Hysteresis[6]
VIK
Input Clamp Diode Voltage
VCC=Min., IIN=–18 mA
IIH
Input HIGH Current
VCC=Max., VI=VCC
IIL
Input LOW Current
Min.
Typ.[5]
2.0
Max.
Unit
VCC
V
0.8
100
[9]
VCC=Min.
V
mV
–0.7
–1.2
V
±100
µA
±100
µA
VI=2.0V
–50
µA
VI=0.8V
+50
µA
IBBH
IBBL
Bus Hold Sustain Current on Bus Hold Input
IBHHO
IBHLO
Bus Hold Overdrive Current on Bus Hold Input[9]
VCC=Max., VI=1.5V
IOZH
High Impedance Output Current
(Three-State Output pins)
IOZL
±500
µA
VCC=Max., VOUT=VCC
±1
µA
High Impedance Output Current
(Three-State Output pins)
VCC=Max., VOUT=GND
±1
µA
IOS
Short Circuit Current[7]
VCC=Max., VOUT=GND
–240
mA
IOFF
Power-Off Disable
VCC=0V, VOUT≤4.5V
±100
µA
ICC
Quiescent Power Supply Current
VIN≤0.2V,
VIN>VCC–0.2V
VCC=Max.
+40
µA
∆ICC
Quiescent Power supply Current
(TTL inputs HIGH)
VIN=VCC–0.6V[8] VCC=Max.
+350
µA
–60
–135
Electrical Characteristics For Balanced Drive Devices Over the Operating Range VCC=2.7V to 3.6V
Parameter
Test Conditions
Max.
Unit
IODL
Output LOW Dynamic
VCC=3.3V, VIN=VIH
or VIL, VOUT=1.5V
45
180
mA
IODH
Output HIGH Dynamic Current[7]
VCC=3.3V, VIN=VIH
or VIL, VOUT=1.5V
–45
–180
mA
VOH
Output HIGH Voltage
VCC=Min., IOH= –0.1 mA
Output LOW Voltage
Min.
Typ.[5]
Current[7]
VOL
Description
VCC–0.2
V
VCC=Min., IOH= –8 mA
2.4[10]
3.0
VCC=3.0V, IOH= –24 mA
2.0
3.0
VCC=Min., IOL= 0.1mA
V
V
0.2
VCC=Min., IOL= 24 mA
0.3
V
0.55
Notes:
9. Pins with bus hold are described in Pin Description.
10. VOH=VCC–0.6V at rated current.
Capacitance[6](TA = +25˚C, f = 1.0 MHz)
Parameter
Description
Test Conditions
Typ.[5]
Max.
Unit
CIN
Input Capacitance
VIN = 0V
4.5
6.0
pF
COUT
Output Capacitance
VOUT = 0V
5.5
8.0
pF
3
CY74FCT163245
CY74FCT163H245
Power Supply Characteristics
Parameter
Description
Test Conditions
Typ.[5]
Max.
Unit
ICCD
Dynamic Power Supply
Current[11]
VCC=Max., One Input Toggling, VIN=VCC or
50% Duty Cycle,
VIN=GND
Outputs Open, OE=GND
50
75
µA/MHz
IC
Total Power Supply
Current[12]
VCC=Max., f1=10 MHz, 50%
VIN=VCC or
Duty Cycle, Outputs Open, One VIN=GND
Bit Toggling, OE=GND
VIN=VCC–0.6V or
VIN=GND
0.5
0.8
mA
0.5
0.8
mA
VCC=Max., f1=2.5 MHz, 50%
VIN=VCC or
Duty Cycle, Outputs Open, Six- VIN=GND
teen Bits Toggling, OE=GND
VIN=VCC–0.6V or
VIN=GND
2.0
3.0[13]
mA
2.0
3.3[13]
mA
Switching Characteristics Over the Operating Range VCC=3.0V to 3.6V[14,15]
CY74FCT163245A
CY74FCT163H245A
CY74FCT163245C
CY74FCT163H245C
Description
Min.
Max.
Min.
Max.
Unit
Fig. No.[16]
tPLH
tPHL
Propagation Delay Data to
Output
1.5
4.8
1.5
4.1
ns
1, 3
tPZH
tPZL
Output Enable Time
1.5
6.2
1.5
5.8
ns
1, 7, 8
tPHZ
tPLZ
Output Disable Time
1.5
5.6
1.5
5.2
ns
1, 7, 8
tSK(O)
Output Skew[17]
0.5
ns
—
Parameter
0.5
Notes:
11. This parameter is not directly testable, but is derived for use in Total Power Supply calculations.
12. IC
= IQUIESCENT + IINPUTS + IDYNAMIC
IC
= ICC+∆ICCDHNT+ICCD(f0/2 + f1N1)
ICC = Quiescent Current with CMOS input levels
∆ICC = Power Supply Current for a TTL HIGH input (VIN=3.4V)
DH = Duty Cycle for TTL inputs HIGH
NT = Number of TTL inputs at DH
ICCD = Dynamic Current caused by an input transition pair (HLH or LHL)
= Clock frequency for registered devices, otherwise zero
f0
= Input signal frequency
f1
N1 = Number of inputs changing at f1
All currents are in milliamps and all frequencies are in megahertz.
13. Values for these conditions are examples of the ICC formula. These limits are specified but not tested.
14. Minimum limits are specified but not tested on Propagation Delays.
15. For VCC =2.7, propagation delay, output enable and output disable times should be degraded by 20%.
16. See “Parameter Measurement Information” in the General Information section.
17. Skew between any two outputs of the same package switching in the same direction. This parameter is ensured by design.
Ordering Information CY74FCT163245
Speed
(ns)
4.1
4.8
Ordering Code
Package
Name
Package Type
CY74FCT163245CPACT
Z48
48-Lead (240-Mil) TSSOP
CY74FCT163245CPVC/PVCT
O48
48-Lead (300-Mil) SSOP
CY74FCT163245APACT
Z48
48-Lead (240-Mil) TSSOP
CY74FCT163245APVC/PVCT
O48
48-Lead (300-Mil) SSOP
4
Operating
Range
Industrial
Industrial
CY74FCT163245
CY74FCT163H245
Ordering Information CY74FCT163H245
Speed
(ns)
4.1
4.8
Ordering Code
Package
Name
Package Type
74FCT163H245CPACT
Z48
48-Lead (240-Mil) TSSOP
CY74FCT163H245CPVC
O48
48-Lead (300-Mil) SSOP
74FCT163H245CPVCT
O48
48-Lead (300-Mil) SSOP
CY74FCT163H245APVC
O48
48-Lead (300-Mil) SSOP
74FCT163H245APVCT
O48
48-Lead (300-Mil) SSOP
5
Operating
Range
Industrial
Industrial
CY74FCT163245
CY74FCT163H245
Package Diagrams
48-Lead Shrunk Small Outline Package O48
48-Lead Thin Shrunk Small Outline Package Z48
6
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