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TC7MBD3244FK
Octal Bus Switch
TC7MBD3244FK TOSHIBA CMOS Digital Integrated Circuit Silicon Monolithic
TC7MBD3244FK Octal Bus Switch
The TC7MBD3244FK provides eight bits of high-speed
TTL-compatible bus switching in a standard ’244 device pinout.
The low on resistance of the switch allows connections to be made
with minimal propagation delay.
The device is organized as two 4-bit low-impedance switches
with separate output-enable (OE) inputs. When OE is low, the
switch is on and data can flow from port A to port B, or vice versa.
When OE is high, the switch is open and a high-impedance state
exists between the two ports.
The internal diode which adds to power supply line is enable to
realize the shift of signal level from 5 V to 3.3 V . (Note 1)
All inputs are equipped with protection circuits against static
discharge.
Features Pin Assignment (top view) Operating voltage: VCC = 4.5~5.5 V High speed: tpd = 0.25 ns (max) Low on resistance: RON = 5 Ω (typ.) ESD performance: Human body model > ±2000 V Machine model > ±200 V Compatible with TTL outputs (control inputs) Package: VSSOP (US20) Pin compatible with the 74xx244 type. Functionally equivalent to (FST/CBT) 3244.
Note 1: In case that over-shoot noise is detected, this device
should be used with clamp diode to prevent the next stage
device from over-stress.
Weight: 0.03 g (typ.)
VCC 20 2
1B1
2A4
19
18
17 1 11A2
1A1
2B4
(top view)
1B2 16
2A3
1B3
2A2
15
14
13
2B3 51A4
1A3
2B2
1B4
2A1
12
11 GND
2B1
