PI74LPT16952 Datasheet, PDF (1/5 Pages) Pericom Semiconductor Corporation – Fast CMOS 3.3V 16-Bit Registered Transceivers

PI74LPT16952
12345678901234567890123456789012123456789012345678901234567890121234567890123³4^.5³6^V7890¹1⁶23^-4^B56^I7^T890^R12^E12^G345^I6^S78^T90^E12^R34^E56^D789^T01^R234^A56^N78^S90^C12^E12^I3^V456^E78^R90^S12
PI74LPT16952 _{1122334455667788990011223344556677889900112233445566778899001122112233445566778899001122334455667788990011223344556677889900112211223344556677889900112233445566778899001122334455667788990011221122334455667788990011223344556677889900112233445566778899001122112233445566778899001122}
Fast CMOS 3.3V 16-Bit Registered Transceivers 1
Product Features
• Compatible with LCX™ and LVT™ families of products
• Supports 5V Tolerant Mixed Signal Mode Operation
– Input can be 3V or 5V
– Output can be 3V or connected to 5V bus
• Advanced Low Power CMOS Operation
• Excellent output drive capability:
Balanced drives (24 mA sink and source)
• Pin compatible with industry standard double-density
pinouts
• Low ground bounce outputs
• Hysteresis on all inputs
• Industrial operating temperature range: –40°C to +85°C
• Multiple center pins and distributed Vcc/GND pins
minimize switching noise
• Packages available:
– 56-pin 240 mil wide plastic TSSOP (A)
– 56-pin 300 mil wide plastic SSOP (V)
2
Product Description
Pericom Semiconductor’s PI74LPT series of logic circuits are
produced in the Company’s advanced 0.6 micron CMOS technology,
achieving industry leading speed grades.
3
The PI74LPT16952 is a 16-bit registered transceivers organized
with two sets of eight D-type latches with separate input and output
controls for each set. For data flow from A to B, for example, the A-
to-B Enable (xCEAB) input must be LOW to enter data from xAx.
4 ^{The data present on the A port will be clocked on the B register when}
xCLKAB toggles from LOW-to-HIGH. The xOEAB control
performs the output enable function on the B port. Control of data
5 ^{from B to A is similar, but uses the xCEAB, xCLKAB, and xOEAB}
inputs. By connecting the control pins of the two independent
transceivers together, a full 16-bit operation can be achieved. The
output buffers are designed with a Power-Off disable allowing “live
6 ^{insertion” of boards when used as backplane drivers.}
The PI74LPT16952 can be driven from either 3.3V or 5.0V devices
allowing this device to be used as a translator in a mixed
3.3/5.0V system.
7
Logic Block Diagram
1OEBA
1CEBA
1CLKBA
1OEAB
1CEAB
1CLKAB
C
1A0
D
C
D
TO 7 OTHER CHANNELS
2OEBA
2CEBA
2CLKBA
2OEAB
2CEAB
2CLKAB
2A0
1B0
C
D
C
D
TO 7 OTHER CHANNELS
8
9
10
11
12
13
2B0
14
15
1
PS2076A 02/4/97