Product specification Supersedes data of 1998 Jun 16 IC24 Data Handbook 1998 Jun 29
· Wide supply voltage range to 3.6V· Complies with JEDEC standard no. 8-1A· CMOS low power consumption· MULTIBYTETM flow-through standard pin-out architecture· Low inductance multiple VCC and ground pins for minimum noise
· Direct interface with TTL levels· All data inputs have bus hold (74ALVCH16245 only)· Output drive capability 50 transmission lines @ 85°C· Current drive 3.0 V
The a 16-bit transceiver featuring non-inverting 3-State bus compatible outputs in both send and receive directions. The 74ALVC16245(74ALVCH16245) features two output enable (nOE) inputs for easy cascading and two send/receive (nDIR) inputs for direction control. nOE controls the outputs so that the buses are effectively isolated. This device can be used as two 8-bit transceivers or one 16-bit transceiver. The 74ALVCH16245 has active bus hold circuitry which is provided to hold unused or floating data inputs at a valid logic level. This feature eliminates the need for external pull-up or pull-down resistors. The 74ALVC16245 has 5V tolerant inputs.
GND = 0V; Tamb tf 2.5ns SYMBOL tPHL/tPLH CI CI/O CPD PARAMETER Propagation delay An to Bn; to An Input capacitance Input/output capacitance Power dissipation capacitance per buffer VI = GND to VCC1 Outputs enabled Outputs disabled CONDITIONS VCC = 30pF VCC = 50pF TYPICAL UNIT ns pF
NOTE: 1. CPD is used to determine the dynamic power dissipation (PD in µW): PD = CPD + S (CL VCC2 × fo) where: fi = input frequency in MHz; CL = output load capacitance in pF; fo = output frequency in MHz; VCC = supply voltage V; S (CL VCC2 × fo) = sum of the outputs.
PACKAGES 48-Pin Plastic SSOP Type III 48-Pin Plastic TSSOP Type II 48-Pin Plastic SSOP Type III 48-Pin Plastic TSSOP Type II TEMPERATURE RANGE to +85°C OUTSIDE NORTH AMERICA DL 74ALVC16245 DGG DL 74ALVCH16245 DGG NORTH AMERICA DL AC16245 DGG DL ACH16245 DGG DWG NUMBER SOT370-1 SOT362-1
PIN NUMBER SYMBOL to 1B7 GND VCC 1A7 1OE NAME AND FUNCTION Direction control Data inputs/outputs Ground (0V) Positive supply voltage Data inputs/outputs Direction control Output enable input (active LOW) Data inputs/outputs Data inputs/outputs Output enable input (active LOW)
H = HIGH voltage level L = LOW voltage level X = don't care Z = high impedance OFF-state