PI74FCT162373 Datasheet, PDF (1/7 Pages) Pericom Semiconductor Corporation – Fast CMOS 16-Bit Transparent Latches

PI74FCT16_P37_I3₇/1₄6_F23_C73_T/1₁6₆2H₃₇37₃3_TT
PI74FCT162373T ^{12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345617869-0B12I12T345T67R89A01N23S45P67A89R012E34N56T789L01A21T23C45H678E90S12}
PI74FCT162H373T
1122334455667788990011223344556677889900112233445566778899001122112233445566778899001122334455667788990011223344556677889900112211223344556677889900112233445566778899001122334455667788990011221122334455667788990011223344556677889900112233445566778899001122112233445566778899001122
Fast CMOS 16-Bit
Transparent Latches
Product Features:
Common Features:
• PI74FCT16373T,PI74FCT162373T,andPI74FCT162H373Tare
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)
PI74FCT16373T 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
PI74FCT162373T Features:
• Balanced output drivers: ±24 mA
• Reduced system switching noise
• Typical VOLP (Output Ground Bounce) < 0.6V
at VCC = 5V, TA = 25°C
PI74FCT162H373T 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 pro-
duced in the Company’s advanced 0.6 micron CMOS technology,
achieving industry leading speed grades.
The PI74FCT16373T, PI74FCT162373T, and PI74FCT162H373T
are 16-bit transparent latches designed with 3-state outputs and are
intended for bus oriented applications. The Output Enable and
Latch Enable controls are organized to operate as two 8-bit latches
or one 16-bit latch. When Latch Enable (LE) is HIGH, the flip-flops
appear transparent to the data. The data that meets the set-up time
when LE is LOW is latched. When OE is HIGH, the bus output is
in the high impedance state.
The PI74FCT16373T output buffers are designed with a Power-
Off disable allowing “live insertion” of boards when used as
backplane drivers.
The PI74FCT162373T 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 PI74FCT162H373T 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
1LE
2LE
1D0
D
2D0
D
1O0
2O0
C
C
TO 7 OTHER CHANNELS
TO 7 OTHER CHANNELS
1
PS2033A 03/11/96