TI CY74FCT16244CTPVCT 16-bit buffers/line driver Datasheet

1CY74FCT16444T/2
H244T
Data sheet acquired from Cypress Semiconductor Corporation.
Data sheet modified to remove devices not offered.
CY74FCT16244T
CY74FCT162244T
CY74FCT162H244T
16-Bit Buffers/Line Drivers
SCCS028 - December 1987 - Revised March 2000
Features
Functional Description
• FCT-E speed at 3.2 ns
• Power-off disable outputs permits live insertion
• Edge-rate control circuitry for significantly improved
noise characteristics
• Typical output skew < 250 ps
• ESD > 2000V
• TSSOP (19.6-mil pitch) and SSOP (25-mil pitch)
packages
• Industrial temperature range of –40˚C to +85˚C
• VCC = 5V ± 10%
CY74FCT16244T Features:
• 64 mA sink current, 32 mA source current
• Typical VOLP (ground bounce)
<1.0V at VCC = 5V, TA = 25˚C
CY74FCT162244T Features:
• Balanced output drivers: 24 mA
• Reduced system switching noise
• Typical VOLP (ground bounce)
<0.6V at VCC = 5V, TA= 25˚C
CY74FCT162H244T Features:
• Bus hold on data inputs
• Eliminates the need for external pull-up or pull-down
resistors
These 16-bit buffers/line drivers are designed for use in
memory driver, clock driver, or other bus interface applications,
where high-speed and low power are required. With
flow-through pinout and small shrink packaging board layout
is simplified. The three-state controls are designed to allow
4-bit, 8-bit or combined 16-bit operation. The outputs are designed with a power-off disable feature to allow for live
insertion of boards.
The CY74FCT16244T is ideally suited for driving
high-capacitance loads and low-impedance backplanes.
The CY74FCT162244T has 24-mA balanced output drivers
with current limiting resistors in the outputs. This reduces the
need for external terminating resistors and provides for minimal undershoot and reduced ground bounce. The
CY74FCT162244T is ideal for driving transmission lines.
The CY74FCT162H244T is a 24-mA balanced output part that
has “bus hold” on the data inputs. The device 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.
Logic Block Diagrams CY74FCT16244T, CY74FCT162244T,
CY74FCT162H244T
1OE
3OE
1A1
3A1
1A2
1Y1
1Y2
3A2
Pin Configuration
SSOP/TSSOP
Top View
3Y1
3Y2
1OE
1
48
2OE
1Y1
2
47
1A1
1Y2
3
46
1A2
GND
4
45
GND
1Y3
1Y4
1A3
1Y3
3A3
3Y3
VCC
2Y1
2Y2
1A4
1Y4
3A4
FCT16244–1
2A2
2A3
2A4
FCT16244–2
4OE
2OE
2A1
3Y4
2Y1
4A1
2Y2
4A2
2Y3
4A3
2Y4
FCT16244–3
4A4
4Y1
4Y2
4Y3
4Y4
FCT16244–4
Copyright
5 16244T 44
162244T
6 162H244T43
42
7
1A3
8
41
2A1
1A4
VCC
9
40
2A2
GND
10
39
GND
2Y3
11
38
2A3
2Y4
37
36
2A4
3Y1
12
13
3Y2
14
35
3A2
GND
15
34
GND
3Y3
16
33
3A3
3Y4
17
32
3A4
VCC
4Y1
18
31
VCC
19
30
4A1
3A1
4Y2
20
29
4A2
GND
21
28
GND
4Y3
22
27
4A3
4Y4
23
26
4A4
4OE
24
25
3OE
FCT16244–5
© 2000, Texas Instruments Incorporated
CY74FCT16244T
CY74FCT162244T
CY74FCT162H244T
Maximum Ratings [3,4]
Pin Description
Name
(Above which the useful life may be impaired. For user
guidelines, not tested.)
Description
OE
Three-State Output Enable Inputs (Active LOW)
Storage Temperature ................................. –55°C to +125°C
A
Data Inputs[1]
Y
Three-State Outputs
Ambient Temperature with
Power Applied............................................. –55°C to +125°C
DC Input Voltage ........................................... –0.5V to +7.0V
DC Output Voltage......................................... –0.5V to +7.0V
[2]
DC Output Current
(Maximum Sink Current/Pin) ........................–60 to +120 mA
Function Table
Inputs
Outputs
OE
A
Y
L
L
L
L
H
H
H
X
Z
Power Dissipation .......................................................... 1.0W
Static Discharge Voltage............................................>2001V
(per MIL-STD-883, Method 3015)
Ordering Range
Ambient
Temperature
VCC
– 40°C to +85°C
5V ± 10%
Range
Industrial
Notes:
1. On CY74FCT162H244T these pins have “bus hold.”
2. H = HIGH Voltage Level. L = LOW Voltage Level. X = Don’t Care. Z = High Importance.
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.
Electrical Characteristics Over the Operating Range
Parameter
Description
VIH
Input HIGH Voltage
VIL
Input LOW Voltage
VH
Input Hysteresis[6]
VIK
Input Clamp Diode Voltage
IIH
Input HIGH Current
Test Conditions
Min.
Typ.[5]
2.0
0.8
100
VCC=Min., IIN=–18 mA
Standard
IIL
Input LOW Current
IBBH
IBBL
Bus Hold Sustain Current on Bus Hold Input[7]
–0.7
VCC=Max., VI=VCC
VCC=Max., VI=GND
Bus Hold
Bus Hold Overdrive Current on Bus Hold
IOZH
High Impedance Output Current
(Three-State Output pins)
IOZL
IOS
IOFF
V
mV
–1.2
V
±1
µA
±100
Standard
IBHHO
IBHLO
Unit
V
Bus Hold
IO
Max.
VCC=Min.
Input[7]
VI=2.0V
–50
VI=0.8V
+50
±1
µA
±100
µA
µA
TBD
mA
VCC=Max., VOUT=2.7V
±1
µA
High Impedance Output Current
(Three-State Output pins)
VCC=Max., VOUT=0.5V
±1
µA
Short Circuit Current[8]
VCC=Max., VOUT=GND
–80
–200
mA
Current[8]
VCC=Max., VOUT=2.5V
–50
–180
mA
±1
µA
Output Drive
Power-Off Disable
VCC=Max., VI=1.5V
VCC=0V, VOUT
2
≤4.5V[9]
–140
CY74FCT16244T
CY74FCT162244T
CY74FCT162H244T
Output Drive Characteristics for CY74FCT16244T
Parameter
VOH
VOL
Description
Min.
Typ.[5]
VCC=Min., IOH=–3 mA
2.5
3.5
V
VCC=Min., IOH=–15 mA
2.4
3.5
V
VCC=Min., IOH=–32 mA
2.0
3.0
V
Test Conditions
Output HIGH Voltage
Output LOW Voltage
VCC=Min., IOL=64 mA
0.2
Max.
Unit
0.55
V
Output Drive Characteristics for CY74FCT162244T, CY74FCT162H244T
Parameter
IODL
Description
[8]
Output LOW Current
Current[8]
Test Conditions
Min.
Typ.[5]
Max.
Unit
VCC=5V, VIN=VIH or VIL, VOUT=1.5V
60
115
150
mA
–150
mA
IODH
Output HIGH
VCC=5V, VIN=VIH or VIL, VOUT=1.5V
–60
–115
VOH
Output HIGH Voltage
VCC=Min., IOH=–24 mA
2.4
3.3
VOL
Output LOW Voltage
VCC=Min., IOL=24 mA
0.3
V
0.55
V
Notes:
5. Typical values are at VCC=5.0V, TA = +25˚C ambient.
6. This parameter is specified but not tested.
7. Pins with bus hold are described in Pin Description.
8. 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.
9. Tested at +25˚C.
3
CY74FCT16244T
CY74FCT162244T
CY74FCT162H244T
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
Typ.[5]
Max.
Unit
5
500
µA
0.5
1.5
mA
Power Supply Characteristics
Parameter
Description
Test Conditions
ICC
Quiescent Power Supply Current VCC=Max.
VIN≤0.2V,
VIN≤VCC-0.2V
∆ICC
Quiescent Power Supply Current VCC=Max.
(TTL inputs HIGH)
VIN=3.4V[10]
ICCD
Dynamic Power Supply
Current[11]
VCC=Max., One Input Toggling, VIN=VCC or
50% Duty Cycle, Outputs
VIN=GND
Open, OE=GND
60
100
µA/MHz
IC
Total Power Supply Current[12]
VCC=Max., f1=10 MHz,
50% Duty Cycle, Outputs
Open, One Bit Toggling,
OE=GND
VIN=VCC or
VIN=GND
0.6
1.5
mA
VIN=3.4V or
VIN=GND
0.9
2.3
mA
VIN=VCC or
VIN=GND
2.4
4.5[13]
mA
VIN=3.4V or
VIN=GND
6.4
16.5[13]
mA
VCC=Max., f1=2.5 MHz, 50%
Duty Cycle, Outputs Open, Sixteen Bits Toggling,
OE=GND
Notes:
10. Per TTL driven input (VIN = 3.4V); all other inputs at VCC or GND.
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)
= Duty Cycle for TTL inputs HIGH
DH
= Number of TTL inputs at DH
NT
ICCD = Dynamic Current caused by an input transition pair (HLH or LHL)
= Clock frequency for registered devices, otherwise zero
f0
= Input signal frequency
f1
= Number of inputs changing at f1
N1
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.
4
CY74FCT16244T
CY74FCT162244T
CY74FCT162H244T
Switching Characteristics Over the Operating Range[14]
S
CY74FCT16244T
CY74FCT162244T
Parameter
Description
CY74FCT16244AT
CY74FCT162244AT
CY74FCT162H244AT
Min.
Max.
Min.
Max.
Unit
Fig. No.[15]
tPLH
tPHL
Propagation Delay Data to Output
1.5
6.5
1.5
4.8
ns
1, 3
tPZH
tPZL
Output Enable Time
1.5
8.0
1.5
6.2
ns
1, 7, 8
tPHZ
tPLZ
Output Disable Time
1.5
7.0
1.5
5.6
ns
1, 7, 8
tSK(O)
Output Skew[16]
0.5
ns
—
0.5
Switching Characteristics Over the Operating Range[14] (continued)
CY74FCT16244CT
CY74FCT162244CT
CY74FCT162H244CT
Parameter
Description
CY74FCT16244ET
CY74FCT162244ET
CY74FCT162H244ET
Min.
Max.
Min.
Max.
Unit
Fig. No.[15]
tPLH
tPHL
Propagation Delay Data to Output
1.5
4.1
1.5
3.2
ns
1, 3
tPZH
tPZL
Output Enable Time
1.5
5.8
1.5
4.4
ns
1, 7, 8
tPHZ
tPLZ
Output Disable Time
1.5
5.2
1.5
3.6
ns
1, 7, 8
tSK(O)
Output Skew[16]
0.5
ns
—
0.5
Notes:
14. Minimum limits are specified but not tested on Propagation Delays.
15. See “Parameter Measurement Information” in the General Information section.
16. Skew between any two outputs of the same package switching in the same direction. This parameter is ensured by design.
5
CY74FCT16244T
CY74FCT162244T
CY74FCT162H244T
Ordering Information CY74FCT16244
Speed
(ns)
3.2
4.1
4.8
6.5
Ordering Code
Package
Name
Package Type
CY74FCT16244ETPACT
Z48
48-Lead (240-Mil) TSSOP
CY74FCT16244ETPVC/PVCT
O48
48-Lead (300-Mil) SSOP
CY74FCT16244CTPACT
Z48
48-Lead (240-Mil) TSSOP
CY74FCT16244CTPVC/PVCT
O48
48-Lead (300-Mil) SSOP
CY74FCT16244ATPACT
Z48
48-Lead (240-Mil) TSSOP
CY74FCT16244ATPVC/PVCT
O48
48-Lead (300-Mil) SSOP
CY74FCT16244TPACT
Z48
48-Lead (240-Mil) TSSOP
CY74FCT16244TPVC/PVCT
O48
48-Lead (300-Mil) SSOP
Operating
Range
Industrial
Industrial
Industrial
Industrial
Ordering Information CY74FCT162244
Speed
(ns)
3.2
4.1
4.8
6.5
Ordering Code
Package
Name
Package Type
74FCT162244ETPACT
Z48
48-Lead (240-Mil) TSSOP
CY74FCT162244ETPVC
O48
48-Lead (300-Mil) SSOP
74FCT162244ETPVCT
O48
48-Lead (300-Mil) SSOP
74FCT162244CTPACT
Z48
48-Lead (240-Mil) TSSOP
CY74FCT162244CTPVC
O48
48-Lead (300-Mil) SSOP
74FCT162244CTPVCT
O48
48-Lead (300-Mil) SSOP
74FCT162244ATPACT
Z48
48-Lead (240-Mil) TSSOP
CY74FCT162244ATPVC
O48
48-Lead (300-Mil) SSOP
74FCT162244ATPVCT
O48
48-Lead (300-Mil) SSOP
CY74FCT162244TPACT
Z48
48-Lead (240-Mil) TSSOP
CY74FCT162244TPVC/PVCT
O48
48-Lead (300-Mil) SSOP
Operating
Range
Industrial
Industrial
Industrial
Industrial
Ordering Information CY74FCT162H244
Speed
(ns)
3.2
Ordering Code
Package
Name
Package Type
74FCT162H244ETPACT
Z48
48-Lead (240-Mil) TSSOP
Operating
Range
Industrial
74FCT162H244ETPVC/PVCT
O48
48-Lead (300-Mil) SSOP
4.1
74FCT162H244CTPVC/PVCT
O48
48-Lead (300-Mil) SSOP
Industrial
4.8
74FCT162H244ATPACT
Z48
48-Lead (240-Mil) TSSOP
Industrial
Document #: 38-00396-C
6
CY74FCT16244T
CY74FCT162244T
CY74FCT162H244T
Package Diagrams
48-Lead Shrunk Small Outline Package O48
48-Lead Thin Shrunk SmallOutline Package Z48
7
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