1 Features
• 0.9V to 2V on A port and 1.65V to 3.6V on B port
(VCCA ≤ VCCB)
• Maximum data rates:
– >345Mbps (15pF load)
– >190Mbps (100pF load)
• Supports high-speed interfaces such as QSPI,
OSPI, eSPI
• No direction control signal needed
• VCC isolation feature: if either VCC input is at GND,
all outputs are in the high-impedance state
• Schmitt-trigger inputs allow for slow or noisy inputs
• Output enable (OE) input circuit referenced to
VCCA
• Latch-up Performance Exceeds 100mA Per JESD
78, Class II
• ESD Protection Exceeds JESD 22
– A Port:
• 2000V Human-Body Model (A114-B)
• 1000V Charged-Device Model (C101)
– B Port:
• 2000V Human-Body Model (A114-B)
• 1000V Charged-Device Model (C101)

2 Applications
• Data Center and Enterprise Computing
• Desktop PC
• Personal Electronics

3 Description
The TXB0604 is an 4-bit non-inverting autobidirectional
translator that uses two separate
configurable power-supply rails. This voltage
translator/ line redriver can be used to remedy voltage
domain mismatches in addition to signal boosting in
long-cabling transmission applications.
The TXB0604 leverages a patented design to
achieve high data throughput for memory-intensive
interfaces like Quad-SPI between BMC and Flash
devices without signal integrity losses associated with
excessive output parasitic capacitance.
The A port is designed to track VCCA. VCCA accepts
any supply voltage from 0.9V to 2V. The B port is
designed to track VCCB. VCCB accepts any supply
voltage from 1.65V to 3.6V.
When the OE input is low, all outputs are placed in the
high-impedance state. To ensure the high-impedance
state during power up or power down, OE must
be tied to GND through a pulldown resistor. The
current sourcing capability of the driver determines
the minimum value of the resistor. The TXB0604
device is designed so the OE input circuit is supplied
by VCCA.