IDT74FCT646T Datasheet, PDF (7/9 Pages) Integrated Device Technology – FAST CMOS OCTAL TRANSCEIVER/ REGISTERS (3-STATE)

IDT54/74FCT646/2646/652/2652T/AT/CT/DT, 648T/AT/CT
FAST CMOS OCTAL TRANSCEIVER/REGISTER
MILITARY AND COMMERCIAL TEMPERATURE RANGES
SWITCHING CHARACTERISTICS OVER OPERATING RANGE
646/648/652T
2646/2652T
Com'l.
Mil.
Symbol
Parameter
Condition⁽¹⁾
Min.(2) Max. Min.(2) Max.
tPLH Propagation Delay
tPHL Bus to Bus
tPZH Output Enable Time, G,
tPZL DIR to Bus⁽³⁾
tPHZ Output Disable Time, G,
tPLZ DIR to Bus⁽³⁾
CL = 50pF
RL = 500Ω
2.0 9.0 2.0 11.0
2.0 14.0 2.0 15.0
2.0 9.0 2.0 11.0
tPLH Propagation Delay
tPHL Clock to Bus
2.0 9.0 2.0 10.0
tPLH Propagation Delay SBA or
tPHL SAB to Bus
2.0 11.0 2.0 12.0
tSU Set-up Time HIGH or LOW
Bus to Clock
4.0 — 4.5 —
tH
Hold Time HIGH or LOW
Bus to Clock
2.0 — 2.0 —
tW Clock Pulse Width,
HIGH or LOW
6.0 — 6.0 —
646/648/652CT
2646/2652CT
Com'l.
Mil.
Symbol
Parameter
Condition⁽¹⁾
Min.(2) Max. Min.(2) Max.
tPLH Propagation Delay
tPHL Bus to Bus
tPZH Output Enable Time, G,
tPZL DIR to Bus⁽³⁾
tPHZ Output Disable Time, G,
tPLZ DIR to Bus⁽³⁾
tPLH Propagation Delay
tPHL Clock to Bus
tPLH Propagation Delay SBA or
tPHL SAB to Bus
tSU Set-up Time HIGH or LOW
Bus to Clock
tH
Hold Time HIGH or LOW
Bus to Clock
CL = 50pF
RL = 500Ω
1.5 5.4 1.5 6.0
1.5 7.8 1.5 8.9
1.5 6.3 1.5 7.7
1.5 5.7 1.5 6.3
1.5 6.2 1.5 7.0
2.0 — 2.0 —
1.5 — 1.5 —
tW Clock Pulse Width,
HIGH or LOW⁽⁴⁾
5.0 — 5.0 —
NOTES:
1. See test circuit and waveforms.
2. Minimum limits are guaranteed but not tested on Propagation Delays.
3. GAB, GBA to Bus for 652.
4. This parameter is guaranteed but not tested.
646/648/652AT
2646/2652AT
Com'l.
Mil.
Min.(2) Max. Min.(2) Max.
2.0 6.3 2.0 7.7
Unit
ns
2.0 9.8 2.0 10.5 ns
2.0 6.3 2.0 7.7 ns
2.0 6.3 2.0 7.0 ns
2.0 7.7 2.0 8.4 ns
2.0 — 2.0 — ns
1.5 — 1.5 — ns
5.0 — 5.0 — ns
2634 tbl 09
646/652DT
Com'l.
Mil.
Min.(2) Max. Min.(2) Max.
1.5 4.4 —
—
Unit
ns
1.5 5.0 —
— ns
1.5 4.3 —
— ns
1.5 4.4 —
— ns
1.5 5.0 —
— ns
1.5 —
—
— ns
1.0 —
—
— ns
3.0 —
—
— ns
2634 tbl 10
6.20
7