PI74FCT16374/162374/162H374T
PI74FCT16374T
16-BIT REGISTERS (3-STATE)
PI74FCT162374T
21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321
PI74FCT162H374T
21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321
21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321
Fast CMOS 16-Bit
Registers (3-State)
Product Features:
Product Description:
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: IOH = –32 mA; IOL = 64 mA
• Power off disable outputs permit "live insertion"
• Typical VOLP (Output Ground Bounce) < 1.0V
at VCC = 5V, TA = 25°C
PI74FCT162374T Features:
• Balanced output drivers: ±24 mA
• Reduced system switching noise
• Typical VOLP (Output Ground Bounce) < 0.6V
at VCC = 5V, TA = 25°C
PI74FCT162H374T Features:
• Bus Hold retains last active bus state during 3-state
• Eliminates the need for external pull-up resistors
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.
Logic Block Diagram
1OE
2OE
1CLK
2CLK
1D0
2D0
D
D
1O0
C
2O0
C
TO 7 OTHER CHANNELS
TO 7 OTHER CHANNELS
1
PS2034A
03/28/01
PI74FCT16374/162374/162H374T
16-BIT REGISTERS (3-STATE)
21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321
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, TA = –40°C to +85°C, VCC = 5.0V ± 10%)
Parameters Description
VIH
VIL
IIH
IIH
IIH
IIH
IIL
IIL
IIL
IIL
IBHH
IBHL
IOZH(5)
IOZL(5)
VIK
IOS
IO
VH
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 , VCC = Max.
Standard I/O , VCC = Max.
Bus Hold Input(4), VCC = Max.
Bus Hold I/O(4), VCC = Max.
Standard Input , VCC = Min.
Standard I/O , VCC = Min.
Bus Hold Input(4), VCC = Min.
Bus Hold I/O(4), VCC = Min.
Bus Hold Input(4), VCC = Min.
VCC = Max.
VCC = Max.
VCC = Min., IIN = –18 mA
VCC = Max.(3), VOUT = GND
VCC = Max.(3), VOUT = 2.5V
Min.
Typ(2)
Max.
Units
0.8
1
1
±100
±100
–1
–1
±100
±100
V
V
µA
µA
µA
µA
µA
µA
µA
µA
µA
2.0
VIN = VCC
VIN = VCC
VIN = VCC
VIN = VCC
VIN = GND
VIN = GND
VIN = GND
VIN = GND
VIN = 2.0V
VIN = 0.8V
VOUT = 2.7V
VOUT = 0.5V
–50
+50
–80
–50
–0.7
–140
1
–1
–1.2
–200
–180
100
µA
µA
V
mA
mA
m
V
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
