Features: Common features:
`Low input and output leakage £1mA (max.)
`CMOS power levels
`True TTL input and output compatibility
`VOH = 3.3V (typ.)
`VOL = 0.3V (typ.)
`Meets or exceeds JEDEC standard 18 specifications
`Product available in Radiation Tolerant and Radiation Enhanced versions
`Military product compliant to MIL-STD-883, Class B and DESC listed (dual marked)
`Available in DIP, SOIC, SSOP, QSOP, CERPACK and LCC packages
Pinout
Specifications
| Symbol |
Rating |
Commercial |
Military |
Unit |
| VTERM(2) |
Terminal Voltage
with Respect to
GND |
0.5 to +7.0 |
0.5 to +7.0 |
V |
| VTERM(3) |
Terminal Voltage
with Respect to
GND |
0.5 to
VCC +0.5 |
0.5 to
VCC +0.5 |
V |
| TA |
Operating
Temperature |
0 to +70 |
55 to +125 |
|
| TBIAS |
Temperature
Under Bias |
55 to +125 |
65 to +135 |
|
| TSTG |
Storage
Temperature |
55 to +125 |
65 to +150 |
|
| PT |
Power Dissipation |
0.5 |
0.5 |
W |
| IOUT |
DC Output
Current |
60 to +120 |
60 to +120 |
mA |
DescriptionThe 74FCT2543T is a non-inverting octal transceiver built using an advanced dual metal CMOS technology. This device contains two sets of eight D-type latches with separate input and output controls for each set. For data of the 74FCT2543T flow from A to B, for example, the A-to-B Enable (CEAB) input must be LOW in order to enter data from A0A7 or to take data from B0B7, as indicated in the Function Table. With CEAB LOW, a LOW signal on the A-to-B Latch Enable (LEAB) input makes the A-to-B latches transparent; a subsequent LOW-to-HIGH transition of the LEAB signal puts the A latches in the storage mode and their outputs no longer change with the A inputs. With CEAB and OEAB both LOW, the 3-state B output buffers of the 74FCT2543T are active and reflect the data present at the output of the A latches. Control of data from B to A is similar, but uses the CEBA, LEBA and OEBA inputs.
The 74FCT2543T has balanced output drive with current limiting resistors. This offers low ground bounce, minimal undershoot and controlled output fall times-reducing the need for external series terminating resistors. FCT2xxxT parts are plug-in replacements for FCTxxxT parts.
74FCT2543T Data Sheet
