Logic Block Diagram
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PI74FCT16374/162374/162H374T
PI74FCT16374T
16-BIT REGISTERS (3-STATE)
PI74FCT162374T
PI74FCT162H374T
21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321
21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321
Fast CMOS 16-Bit
Registers (3-State)
Product Features:
Common Features:
• PI74FCT16374T, PI74FCT162374T, and PI74FCT162H374T
are high-speed,
low power devices with high current drive.
• Vcc = 5V ±10%
• Hysteresis on all inputs
• Packages available:
– 48-pin 240 mil wide plastic TSSOP (A)
– 48-pin 300 mil wide plastic SSOP (V)
PI74FCT16374T Features:
• High output drive: I
OH
= –32 mA; I
OL
= 64 mA
• Power off disable outputs permit "live insertion"
• Typical V
OLP
(Output Ground Bounce) < 1.0V
at V
CC
= 5V, T
A
= 25°C
PI74FCT162374T Features:
• Balanced output drivers: ±24 mA
• Reduced system switching noise
• Typical V
OLP
(Output Ground Bounce) < 0.6V
at V
CC
= 5V, T
A
= 25°C
PI74FCT162H374T Features:
• Bus Hold retains last active bus state during 3-state
• Eliminates the need for external pull-up resistors
Product Description:
Pericom Semiconductor’s PI74FCT series of logic circuits are
produced in the Company’s advanced 0.6 micron CMOS technology,
achieving industry leading speed grades.
The PI74FCT16374T, PI74FCT162374T, and PI74FCT162H374T
are 16-bit octal registers designed with 16 D-type flip-flops with a
buffered common clock and 3-state outputs. The Output Enable
(xOE) and clock (xCLK) controls are organized to operate as
two 8-bit registers or one 16-bit register. When OE is HIGH, the
outputs are in the high impedance state. Input data meeting the
setup and hold time requirements of the D inputs is transferred to
the O outputs on the LOW-to-HIGH transition of the clock input.
The PI74FCT16374T output buffers are designed with a Power-Off
disable allowing “live insertion” of boards when used as backplane
drivers.
The PI74FCT162374T has ±24 mA balanced output drivers. It is
designed with current limiting resistors at its outputs to control the
output edge rate resulting in lower ground bounce and undershoot.
This eliminates the need for external terminating resistors for most
interface applications.
The PI74FCT162H374T has “Bus Hold” which retains the input’s
last state whenever the input goes to high-impedance preventing
“floating” inputs and eliminating the need for pull-up/down
resistors.
1
OE
2
OE
1
CLK
2
CLK
1
D
0
D
1
O
0
2
D
0
D
2
O
0
C
C
TO 7 OTHER CHANNELS
TO 7 OTHER CHANNELS
1
PS2034A
03/28/01
Product Pin Description
Pin Name
xOE
xCLK
xDx
xOx
GND
V
CC
Note:
Description
3-State Output Enable Inputs (Active LOW)
Clock Inputs
Inputs
(1)
3-State Outputs
Ground
Power
1. For the PI74FCT162H374T, these pins have “Bus
Hold.” All other pins are standard, outputs, or I/Os.
21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321
PI74FCT16374/162374/162H374T
16-BIT REGISTERS (3-STATE)
Truth Table
(1)
Inputs
Function
High-Z
Load Register
X
D
X
X
CLK
X
OE
Outputs
X
O
X
X
X
L
H
L
H
L
H
↑
↑
↑
↑
H
H
L
L
H
H
Z
Z
L
H
Z
Z
Note:
1. H = High Voltage Level
L = Low Voltage Level
X = Don’t Care
Z = High Impedance
↑
= LOW-to-HIGH transition
Product Pin Configuration
1OE
1O0
1O1
GND
1O2
1O3
VCC
1O4
1O5
GND
1O6
1O7
2O0
2O1
GND
2O2
2O3
VCC
2O4
2O5
GND
2O6
2O7
2OE
1
2
3
4
5
6
7
8
9
10
48
47
46
45
44
43
42
41
40
1CLK
1D0
1D1
GND
1D2
1D3
VCC
1D4
1D5
GND
1D6
1D7
2D0
2D1
GND
2D2
2D3
VCC
2D4
2D5
GND
2D6
2D7
2CLK
48-PIN
39
V48
38
11
A48
37
12
13
14
15
16
17
18
19
20
21
22
23
24
36
35
34
33
32
31
30
29
28
27
26
25
2
PS2034A
03/28/01
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PI74FCT16374/162374/162H374T
16-BIT REGISTERS (3-STATE)
Maximum Ratings
(Above which the useful life may be impaired. For user guidelines, not tested.)
Storage Temperature .................................................................... –65°C to +150°C
Ambient Temperature with Power Applied .................................... –40°C to +85°C
Supply Voltage to Ground Potential (Inputs & Vcc Only) .............. –0.5V to +7.0V
Supply Voltage to Ground Potential (Outputs & D/O Only) ........... –0.5V to +7.0V
DC Input Voltage ............................................................................ –0.5V to +7.0V
DC Output Current ..................................................................................... 120 mA
Power Dissipation ..........................................................................................1.0W
Note:
Stresses greater than those listed under
MAXIMUM RATINGS may cause permanent
damage to the device. This is a stress rating
only and functional operation of the device at
these or any other conditions above those
indicated in the operational sections of this
specification is not implied. Exposure to
absolute maximum rating conditions for
extended periods may affect reliability.
DC Electrical Characteristics
(Over the Operating Range, T
A
= –40°C to +85°C, V
CC
= 5.0V ± 10%)
Parameters Description
V
IH
V
IL
I
IH
I
IH
I
IH
I
IH
I
IL
I
IL
I
IL
I
IL
I
BHH
I
BHL
I
OZH
(5)
I
OZL
(5)
V
IK
I
OS
I
O
V
H
Input HIGH Voltage
Input LOW Voltage
Input HIGH Current
Input HIGH Current
Input HIGH Current
Input HIGH Current
Input LOW Current
Input LOW Current
Input LOW Current
Input LOW Current
Bus Hold
Sustain Current
High Impedance
Output Current
Clamp Diode Voltage
Short Circuit Current
Output Drive Current
Input Hysteresis
Test Conditions
(1)
Guaranteed Logic HIGH Level
Guaranteed Logic LOW Level
Standard Input , V
CC
= Max.
Standard I/O , V
CC
= Max.
Bus Hold Input
(4)
, V
CC
= Max.
Bus Hold I/O
(4)
, V
CC
= Max.
Standard Input , V
CC
= Min.
Standard I/O , V
CC
= Min.
Bus Hold Input
(4)
, V
CC
= Min.
Bus Hold I/O
(4)
, V
CC
= Min.
Bus Hold Input
(4)
, V
CC
= Min.
V
CC
= Max.
V
CC
= Max.
V
CC
= Min., I
IN
= –18 mA
V
CC
= Max.
(3)
, V
OUT
= GND
V
CC
= Max.
(3)
, V
OUT
= 2.5V
Min.
2.0
V
IN
= V
CC
V
IN
= V
CC
V
IN
= V
CC
V
IN
= V
CC
V
IN
= GND
V
IN
= GND
V
IN
= GND
V
IN
= GND
V
IN
= 2.0V
V
IN
= 0.8V
V
OUT
= 2.7V
V
OUT
= 0.5V
0.8
1
1
±100
±100
–1
–1
±100
±100
–50
+50
1
–1
–1.2
–200
–180
Typ
(2)
Max.
Units
V
V
µA
µA
µA
µA
µA
µA
µA
µA
µA
µA
µA
V
mA
mA
m
V
–80
–50
–0.7
–140
100
Notes:
1. For Max. or Min. conditions, use appropriate value specified under Electrical Characteristics for the applicable device type.
2. Typical values are at Vcc = 5.0V, +25°C ambient and maximum loading.
3. Not more than one output should be shorted at one time. Duration of the test should not exceed one second.
4. Pins with Bus Hold are identified in the pin description.
5. This specification does not apply to bi-directional functionalities with Bus Hold.
3
PS2034A
03/28/01
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PI74FCT16374/162374/162H374T
16-BIT REGISTERS (3-STATE)
PI74FCT16374T Output Drive Characteristics
(Over the Operating Range)
Parameters Description
V
OH
Output HIGH Voltage
Test Conditions
(1)
V
CC
= Min., V
IN
= V
IH
or V
IL
I
OH
= –3.0 mA
I
OH
= –15.0 mA
I
OH
= –32.0 mA
I
OL
= 64 mA
Min.
2.5
2.4
2.0
—
Typ
(2)
3.5
3.5
3.0
0.2
—
Max.
Units
V
V
OL
I
OFF
Output LOW Voltage
Power Down Disable
V
CC
= Min., V
IN
= V
IH
or V
IL
V
CC
= 0V, V
IN
or V
OUT
≤
4.5V
0.55
±100
V
µA
PI74FCT162374T/162H374T Output Drive Characteristics
(Over the Operating Range)
Parameters Description
V
OH
V
OL
I
ODL
I
ODH
Output HIGH Voltage
Output LOW Voltage
Output LOW Current
Output HIGH Current
Test Conditions
(1)
V
CC
= Min., V
IN
= V
IH
or V
IL
I
OH
= –24.0 mA
V
CC
= Min., V
IN
= V
IH
or V
IL
I
OL
= 24 mA
V
CC
= 5V, V
IN
= V
IH OR
V
IL
, V
OUT
= 1.5V
(3)
V
CC
= 5V, V
IN
= V
IH OR
V
IL
, V
OUT
= 1.5V
(3)
Min.
2.4
60
–60
Typ
(2)
3.3
0.3
115
–115
Max.
0.55
150
–150
Units
V
V
mA
mA
Capacitance
(T
A
= 25°C, f = 1 MHz)
Parameters
(4)
C
IN
C
OUT
Description
Input Capacitance
Output Capacitance
Test Conditions
V
IN
= 0V
V
OUT
= 0V
Typ
4.5
5.5
Max.
6
8
Units
pF
pF
Notes:
1. For Max. or Min. conditions, use appropriate value specified under Electrical Characteristics for the applicable device type.
2. Typical values are at Vcc = 5.0V, +25°C ambient and maximum loading.
3. Not more than one output should be shorted at one time. Duration of the test should not exceed one second.
4. This parameter is determined by device characterization but is not production tested.
4
PS2034A
03/28/01
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PI74FCT16374/162374/162H374T
16-BIT REGISTERS (3-STATE)
Power Supply Characteristics
Parameters Description
I
CC
∆I
CC
I
CCD
Quiescent Power
Supply Current
Supply Current per
Input @ TTL HIGH
Supply Current per
Input per MHz
(4)
Test Conditions
(1)
V
CC
= Max.
V
CC
= Max.
V
CC
= Max.,
Outputs Open
X
OE = GND
One Bit Toggling
50% Duty Cycle
V
CC
= Max.,
Outputs Open
f
CP
= 10 MH
Z
50% Duty Cycle
X
OE = GND
f
I
= 5 MH
Z
50% Duty Cycle
One Bit Toggling
V
CC
= Max.,
Outputs Open
f
CP
= 10 MH
Z
50% Duty Cycle
X
OE = GND
16 Bits Toggling
f
I
= 2.5 MH
Z
50% Duty Cycle
Notes:
1. For Max. or Min. conditions, use appropriate value specified under Electrical Characteristics for the applicable device.
2. Typical values are at Vcc = 5.0V, +25°C ambient.
3. Per TTL driven input (V
IN
= 3.4V); all other inputs at Vcc or GND.
4. This parameter is not directly testable, but is derived for use in Total Power Supply Calculations.
5. Values for these conditions are examples of the Icc formula. These limits are guaranteed but not tested.
6. I
C
=I
QUIESCENT
+ I
INPUTS
+ I
DYNAMIC
I
C
= I
CC
+
∆I
CC
D
H
N
T
+ I
CCD
(f
CP
/2 + f
I
N
I
)
I
CC
= Quiescent Current
∆I
CC
= Power Supply Current for a TTL High Input (V
IN
= 3.4V)
D
H
= Duty Cycle for TTL Inputs High
N
T
= Number of TTL Inputs at D
H
I
CCD
= Dynamic Current Caused by an Input Transition Pair (HLH or LHL)
f
CP
= Clock Frequency for Register Devices (Zero for Non-Register Devices)
f
I
= Input Frequency
N
I
= Number of Inputs at f
I
All currents are in milliamps and all frequencies are in megahertz.
V
IN
= GND or V
CC
V
IN
= 3.4V
(3)
V
IN
= V
CC
V
IN
= GND
Min.
Typ
(2)
0.1
0.5
60
Max.
500
1.5
100
Units
µA
mA
µA/
MHz
I
C
Total Power Supply
Current
(6)
V
IN
= V
CC
V
IN
= GND
0.6
1.5
(5)
mA
V
IN
= 3.4V
V
IN
= GND
1.1
3.0
(5)
V
IN
= V
CC
V
IN
= GND
3.0
5.5
(5)
V
IN
= 3.4V
V
IN
= GND
7.5
19.0
(5)
5
PS2034A
03/28/01
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