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1. Functional Description

? Low-Voltage, Low-Power 1-Bit Dual-Supply Bus Buffer

2. General

The TC7SPN334L6X is a CMOS high-speed single-bit bus buffer designed to interface between two subsystems

operating at different voltage levels between 1.1 V and 3.6 V.

Its input and output provide overvoltage tolerance and accept up to 3.6 V in power-down mode (power-down

protection).

The TC7SPN334L6X dual-supply bus buffer operates with a VCCA of 1.2 V, 1.5 V, 1.8 V, or 2.5 V bus and a VCCB

of 1.8 V, 2.5 V or 3.3 V. It is suitable for single-bit interfacing.

The A input interfaces with the 1.2 V, 1.5 V, 1.8 V or 2.5 V bus, and the B output interfaces with the 1.8 V, 2.5 V,

3.3 V bus.

All inputs are equipped with protection circuits against static discharge or transient excess voltage.

3. Features

(1) Level converter for interfacing 1.2 V to 1.8 V, 1.2 V to 2.5 V, 1.2 V to 3.3 V, 1.5 V to 2.5 V, 1.5 V to 3.3 V,

1.8 V to 2.5 V, 1.8 V to 3.3 V or 2.5 V to 3.3 V system.

(2) High-speed operation: tpd = 3.2 ns (max) (VCCA = 2.5 ± 0.2 V, VCCB = 3.3 ± 0.3 V)

tpd = 3.8 ns (max) (VCCA = 1.8 ± 0.15 V, VCCB = 3.3 ± 0.3 V)

tpd = 4.5 ns (max) (VCCA = 1.5 ± 0.1 V, VCCB = 3.3 ± 0.3 V)

tpd = 6.2 ns (max) (VCCA = 1.2 ± 0.1 V, VCCB = 3.3 ± 0.3 V)

tpd = 4.9 ns (max) (VCCA = 1.8 ± 0.15 V, VCCB = 2.5 ± 0.2 V)

tpd = 5.5 ns (max) (VCCA = 1.5 ± 0.1 V, VCCB = 2.5 ± 0.2 V)

tpd = 6.9 ns (max) (VCCA = 1.2 ± 0.1 V, VCCB = 2.5 ± 0.2 V)

tpd = 9.7 ns (max) (VCCA = 1.2 ± 0.1 V, VCCB = 1.8 ± 0.15 V)

(3) Output current: IOHB/IOLB = ±3 mA (min) (VCCB = 3.0 V)

IOHB/IOLB = ±2 mA (min) (VCCB = 2.3 V)

IOHB/IOLB = ±0.5 mA (min) (VCCB = 1.65 V)

(4) Ultra-small package: MP6C

(5) 3.6 V tolerant function and power-down protection provided on all inputs and output.