TC74VHCT244AFT-EL Datasheet, PDF (1/9 Pages) Toshiba Semiconductor – TOSHIBA CMOS Digital Integrated Circuit Silicon Monolithic

TC74VHCT240,244AF/AFT/AFK
TOSHIBA CMOS Digital Integrated Circuit Silicon Monolithic
TC74VHCT240AF,TC74VHCT240AFT,TC74VHCT240AFK
TC74VHCT244AF,TC74VHCT244AFT,TC74VHCT244AFK
Octal Bus Buffer
TC74VHCT240AF/AFT/AFK
Inverted, 3-State Outputs
TC74VHCT244AF/AFT/AFK
Non-Inverted, 3-State Outputs
TC74VHCT240AF, TC74VHCT244AF
The TC74VHCT240A and 244A are advanced high speed
CMOS OCTAL BUS BUFFERs fabricated with silicon gate
C²MOS technology. They achieve the high speed operation
similar to equivalent Bipolar Schottky TTL while maintaining
the CMOS low power dissipation.
The TC74VHCT240A is an inverting 3-state buffer having two
active-low output enables. The TC74VHCT244A is a
non-inverting 3-state buffer, and has two active-low output
enables.
These devices are designed to be used with 3-state memory
address drivers, etc.
The input voltage are compatible with TTL output voltage.
These devices may be used as a level converter for interfacing
3.3 V to 5 V system.
Input protection and output circuit ensure that 0 to 5.5 V can
be applied to the input and output ^(Note) pins without regard to
the supply voltage. These structure prevents device destruction
due to mismatched supply and input/output voltages such as
battery back up, hot board insertion, etc.
Note: Output in off-state
Features
• High speed: t_pd = 6.1 ns (typ.) at V_CC = 5 V
• Low power dissipation: I_CC = 4 μA (max) at Ta = 25°C
• Compatible with TTL inputs: V_IL = 0.8 V (max)
V_IH = 2.0 V (min)
• Power down protection is provided on all inputs and outputs
• Balanced propagation delays: t_pLH ^∼− t_pHL
• Low noise: V_OLP = 1.0 V (max)
• Pin and function compatible with the 74 series
(74AC/HC/F/ALS/LS etc.) 240/244 type.
TC74VHCT240AFT, TC74VHCT244AFT
TC74VHCT240AFK, TC74VHCT244AFK
Weight
SOP20-P-300-1.27A:
TSSOP20-P-0044-0.65A:
VSSOP20-P-0030-0.50:
0.22 g (typ.)
0.08 g (typ.)
0.03 g (typ.)
1
2008-12-01