PI74HSTL1212AEX

PI74HSTL1212 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 24-Bit, 1.8V to 3.3V Bi-Directional Level Shifting Transceiver Product Features Product Description • PI74HSTL1212 is designed for translation between 1.8V HSTL and LVCMOS Pericom Semiconductor’s PI74HSTL1212 consists of two 12-Bit bidirectional non-inverting tranceivers with two separate supply rails, A-Port (VCCA) set at 1.8V, and B-Port (VCCB) set at 3.3V. Each set of 12 tranceivers allows translation from a 1.8V to 3.3V and back again. The control inputs 1DAB/1DBA and 2DAB/2DBA allows independent 12-Bit slice direction control for greater flexibility. • Supports 1.8V HSTL Class I Buffer • Industrial operation at –40°C to +85°C • Dual Independent 12-Bit Slice Direction Control The PI74HSTL1212 is particularly useful for asynchronous communications between HSTL and LVTTL/LVCMOS data buses. • Packaging (Pb-free & Green available): – 64-pin 240-mil wide TSSOP (A) Truth Table (Each 12-bit slice) Inputs Ope ration XDAB / XDBA H (TTL) L (TTL) XA to XB HSTL to LVTTL (LVCMOS) XB to XA, LVTTL (LVCMOS) to HSTL Logic Block Diagram A-PORT (HTSL) Pin Configuration B-PORT (LVTTL) 1B1 1B2 1B3 1B4 1B5 1B6 1B7 GND VCCB 1B8 1B9 1B10 1B11 GND 1B12 2B12 2B11 2B10 VCCB 2B9 2B8 2B7 2B6 GND VCCB 2B5 2B4 2B3 2B2 2B1 2VREF 2DAB/2DBA 1DAB/1DBA 1A1 1B1 To 11 Channels 1A12 1VREF 1B12 2DAB/2DBA 2A1 2B1 To 11 Channels 2A12 2VREF 06-0208 2B12 1 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 64 63 62 61 60 59 58 57 56 55 54 53 52 51 50 49 48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33 1DAB/1DBA 1VREF 1A1 1A2 1A3 1A4 1A5 GND VCCA 1A6 1A7 1A8 1A9 GND 1A10 1A11 1A12 2A12 VCCA 2A11 2A10 2A9 2A8 GND VCCA 2A7 2A6 2A5 2A4 2A3 2A2 2A1 PS8598B 06/05/06 PI74HSTL1212 24-Bit, 1.8V to 3.3V BiDirectional Level Shifting Transceiver 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 Maximum Ratings (Absolute maximum ratings over operating free-air temperature range from VCCB at 3.3V & VCCA at 1.5 - 2.5V (unless otherwise noted) Notes: Supply voltage range: VCCA ...................................................... –0.5V to 3.6V Stresses greater than those listed under MAXIMUM VCCB ...................................................... –0.5V to 3.6V RATINGS may cause permanent damage to the device. Input Voltage Range, VI Except I/O ports(1) ...................... –0.5V to 3.6V This is a stress rating only and functional operation of I/O port A(2) .................... –0.5V to VCCA+0.1V (1) the device at these or any other conditions above those I/O port B .................... –0.5V to VCCB+0.1V indicated in the operational sections of this specificaInput clamp current, IIK (VI