74LVX238| Datasheet

74LVX238, 74LVX238MTR, 74LVX238TTR

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74LVX238
LOW VOLTAGE CMOS 3 TO 8 LINE DECODER WITH 5V TOLERANT INPUTS
s

s s

HIGH SPEED: tPD = 5.5ns (TYP.) at VCC = 3.3V 5V TOLERANT INPUTS INPUT VOLTAGE LEVEL: VIL=0.8V, VIH=2V at VCC=3V LOW POWER DISSIPATION: ICC = 2 uA (MAX.) at TA=25 C LOW NOISE: VOLP = 0.3V (TYP.) at VCC = 3.3V SYMMETRICAL OUTPUT IMPEDANCE: |IOH| = IOL = 4mA (MIN) BALANCED PROPAGATION DELAYS: tPLH tPHL OPERATING VOLTAGE RANGE: VCC(OPR) = 2V to 3.6V (1.2V Data Retention) PIN AND FUNCTION COMPATIBLE WITH 74 SERIES 138 IMPROVED LATCH-UP IMMUNITY POWER DOWN PROTECTION ON INPUTS

SOP

TSSOP

Table 1: Order Codes
PACKAGE SOP TSSOP T&R 74LVX238MTR 74LVX238TTR

DESCRIPTION The 74LVX238 is a low voltage CMOS 3 TO 8 LINE DECODER fabricated with sub-micron silicon gate and double-layer metal wiring C2MOS technology. It is ideal for low power, battery operated and low noise 3.3V applications. If the device is enabled, 3 binary select (A, B, and C) determine which one of the outputs will go high. If enable input G1 is held low or either G2A or G2B Figure 1: Pin Connection And IEC Logic Symbols

is held high, the decoding function is inhibited and all the 8 outputs go low. Tree enable inputs are provided to ease cascade connection and application of address decoders for memory systems. Power down protection is provided on all inputs and 0 to 7V can be accepted on inputs with no regard to the supply voltage. This device can be used to interface 5V to 3V system. It combines high speed performance with the true CMOS low power consumption. All inputs and outputs are equipped with protection circuits against static discharge, giving them 2KV ESD immunity and transient excess voltage.

August 2004

Rev. 2

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