SN54ALVTH16245

Features:

`State-of-the-Art Advanced BiCMOS Technology (ABT) Widebus Design for 2.5-V and 3.3-V Operation and Low Static-Power Dissipation
`Support Mixed-Mode Signal Operation (5-V Input and Output Voltages With 2.3-V to 3.6-V VCC)
`Typical VOLP (Output Ground Bounce) <0.8 V at VCC = 3.3 V, TA = 25°C
`High Drive (32/64 mA at 3.3-V VCC)
`Ioff and Power-Up 3-State Support Hot Insertion
`Use Bus Hold on Data Inputs in Place of External Pullup/Pulldown Resistors to Prevent the Bus From Floating
`Flow-Through Architecture Facilitates
`Printed Circuit Board Layout
`Distributed VCC and GND Pins Minimize
`High-Speed Switching Noise Latch-Up Performance Exceeds 100 mA Per JESD 78, Class II


Pinout




Specifications

Supply voltage range, . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .V_CC 0.5 V to 4.6 V
Input voltage range, VI (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . .0.5 V to 7 V
Voltage range applied to any output in the high or power-off state, VO (see Note 1) . . . . . .0.5 V to 7 V
Output current in the low state, IO: SN54ALVTH16245 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .96 mA
SN74ALVTH16245 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . 128 mA
Output current in the high state, IO:SN54ALVTH16245 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .48 mA
SN74ALVTH16245 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . .64 mA
Input clamp current, . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .I_IK (V_I < 0) 50 mA
Output clamp current, . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . .I_OK (V_O < 0) 50 mA
Package thermal impedance, JA (see Note 2): DGG package . . . . . . . . . . . . . . . . . . . . . . . . . .. . . .70°C/W
DGV package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . 58°C/W
DL package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . . . . 63°C/W
GQL package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . . . .42°C/W
Storage temperature range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .65°C to 150°C


Description

The SN54ALVTH16245 is 16-bit (dual-octal) noninverting 3-state transceivers designed for 2.5-V or 3.3-V V_CC operation, but with the capability to provide a TTL interface to a 5-V system environment.

SN54ALVTH16245 can be used as two 8-bit transceivers or one 16-bit transceiver. They allow data transmission from the A bus to the B bus or from the B bus to the A bus, depending on the logic level at the direction-control (DIR) input. The output-enable (OE) input of SN54ALVTH16245 can be used to disable the device so that the buses are effectively isolated.

SN54ALVTH16245 is fully specified for hot-insertion applications using Ioff and power-up 3-state. The Ioff circuitry disables the outputs, preventing damaging current backflow through the device when it is powered down. The power-up 3-state circuitry places the outputs of SN54ALVTH16245 in the high-impedance state during power up and power down, which prevents driver conflict.

Active bus-hold circuitry of SN54ALVTH16245 is provided to hold unused or floating data inputs at a valid logic level. Use of pullup or pulldown resistors with the bus-hold circuitry is not recommended.

When V_CC is between 0 and 1.2 V, the SN54ALVTH16245 is in the high-impedance state during power up or power down. However, to ensure the high-impedance state above 1.2 V, OE should be tied to V_CC through a pullup resistor; the minimum value of the resistor SN54ALVTH16245 is determined by the current-sinking capability of the driver.