HD74LVCZ245A Datasheet | Hitachi Semiconductor

Description The HD74LVCZ245A has eight buffers with three state outputs in a 20 pin package. When (T / R ) is high, data flows from the A inputs to the B outputs, and when (T / R ) is low, data flows from the B inputs to the A outputs. A and B bus are separated by making enable input (OE) high level. When V CC is between 0 and 1.5 V, the device is in the high impedance state during power up or power down. Low voltage and high speed operation is suitable at battery drive product (note type personal puter) and low power consumption extends the life of a battery for long time operation. Features - VCC = 2.7 to 5.5 V - All inputs VIH (Max) = 5.5 V (@VCC = 0 to 5.5 V) - All inputs / outputs V I / O (Max) = 5.5 V (@V CC = 0 V or output off state) - Typical VOL ground bounce < 0.8 V (@VCC = 3.3 V, Ta = 25°C) - Typical VOH undershoot > 2.0 V (@VCC = 3.3 V, Ta = 25°C) - High impedance state during power up and power down - Power off disables outputs, permitting live insertion - High output current ±24 m A (@V CC = 3.0 to 5.5 V) Function Table Inputs OE L L H H : High level L : Low level X : Immaterial Z : High impedance T/R L H X B data to A bus A data to B bus Z Operation Pin Arrangement T/R A0 A1 1 2 3 20 VCC 19 OE 18 B0 17 B1 16 B2 15 B3 14 B4 13 B5 12 B6 11 B7 A2 4 A3 A4 A5 A6 A7 5 6 7 8 9 GND 10 (Top view) Absolute Maximum Ratings Item Supply voltage Input voltage Input / output voltage Symbol VCC VI VI/O Ratings - 0.5 to 7.0 - 0.5 to 7.0 - 0.5 to 7.0 - 0.5 to VCC+0.5 Input diode current Output diode current Output current VCC, GND current Storage temperature I IK I OK IO I CC or IGND Tstg - 50 - 50 ±50 ±100 - 65 to 150 m A m A m A m A °C Unit V V V Output “Z” or VCC : OFF Output “H” or “L” VI < 0 VO < 0 Conditions Note: The absolute maximum ratings are values which must not individually be exceeded, and furthermore, no two of which may be realized at the same time. Remended Operating Conditions Item Supply voltage Input voltage Input /...