74LVC_LVCH1T45 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2012. All rights reserved.
Product data sheet Rev. 6 — 6 August 2012 12 of 33
NXP Semiconductors
74LVC1T45; 74LVCH1T45
Dual supply translating transceiver; 3-state
[1] t
PZH
and t
PZL
are calculated values using the formula shown in Section 14.4 “Enable times”
t
PLZ
LOW to OFF-state
propagation delay
DIR to A 1.4 3.7 1.4 3.7 1.3 3.7 1.0 3.7 0.9 3.7 ns
DIR to B 2.3 13.1 2.4 12.1 1.9 7.4 2.3 7.0 1.8 4.5 ns
t
PZH
OFF-statetoHIGH
propagation delay
DIR to A
[1]
- 23.6 - 18.9 - 12.2 - 11.4 - 8.4 ns
DIR to B
[1]
- 20.3 - 18.8 - 11.2 - 9.1 - 7.6 ns
t
PZL
OFF-state to LOW
propagation delay
DIR to A
[1]
- 28.1 - 23.1 - 14.3 - 12.0 - 9.2 ns
DIR to B
[1]
- 20.7 - 17.6 - 11.6 - 9.9 - 8.9 ns
Table 12. Dynamic characteristics for temperature range 40 C to +85 C
…continued
Voltages are referenced to GND (ground = 0 V); for test circuit see Figure 8; for wave forms see Figure 6 and Figure 7
Symbol Parameter Conditions V
CC(B)
Unit
1.5 V 0.1 V 1.8 V 0.15 V 2.5 V 0.2 V 3.3 V 0.3 V 5.0 V 0.5 V
Min Max Min Max Min Max Min Max Min Max
Table 13. Dynamic characteristics for temperature range 40 C to +125 C
Voltages are referenced to GND (ground = 0 V); for test circuit see Figure 8
; for wave forms see Figure 6 and Figure 7
Symbol Parameter Conditions V
CC(B)
Unit
1.5 V 0.1 V 1.8 V 0.15 V 2.5 V 0.2 V 3.3 V 0.3 V 5.0 V 0.5 V
Min Max Min Max Min Max Min Max Min Max
V
CC(A)
= 1.4 V to 1.6 V
t
PLH
LOW to HIGH
propagation delay
A to B 2.5 23.5 2.1 19.4 1.8 14.9 1.5 13.0 1.4 11.6 ns
B to A 2.5 23.5 2.3 21.1 2.0 16.4 2.0 13.7 1.9 13.2 ns
t
PHL
HIGH to LOW
propagation delay
A to B 2.3 21.3 1.9 16.9 1.6 13.0 1.5 12.0 1.5 11.9 ns
B to A 2.3 21.3 2.1 19.1 2.0 14.6 1.9 12.5 2.0 12.1 ns
t
PHZ
HIGH to OFF-state
propagation delay
DIR to A 2.7 20.6 2.7 20.6 2.7 20.6 2.7 20.6 2.7 20.6 ns
DIR to B 3.1 27.3 3.1 26.0 2.7 12.1 2.9 12.5 2.5 11.4 ns
t
PLZ
LOW to OFF-state
propagation delay
DIR to A 2.1 12.6 2.1 12.6 2.1 12.6 2.1 12.6 2.1 12.6 ns
DIR to B 2.5 20.2 2.7 19.0 2.2 10.4 2.7 11.2 2.2 10.4 ns
t
PZH
OFF-statetoHIGH
propagation delay
DIR to A
[1]
- 43.7 - 40.1 - 26.8 - 24.9 - 23.6 ns
DIR to B
[1]
- 36.1 - 32.0 - 27.5 - 25.6 - 24.2 ns
t
PZL
OFF-state to LOW
propagation delay
DIR to A
[1]
- 48.6 - 45.1 - 26.7 - 25.0 - 23.5 ns
DIR to B
[1]
- 41.9 - 37.5 - 33.6 - 32.6 - 32.5 ns
V
CC(A)
= 1.65 V to 1.95 V
t
PLH
LOW to HIGH
propagation delay
A to B 2.3 21.1 1.9 19.5 1.9 10.3 1.5 8.0 1.2 7.5 ns
B to A 2.1 19.4 1.9 19.5 2.0 17.6 1.8 17.1 1.7 16.7 ns
t
PHL
HIGH to LOW
propagation delay
A to B 2.1 19.1 1.8 15.8 1.4 9.4 1.6 7.9 1.5 7.7 ns
B to A 1.9 16.9 1.8 15.8 1.8 14.2 1.8 13.9 1.6 13.5 ns
t
PHZ
HIGH to OFF-state
propagation delay
DIR to A 2.6 18.9 2.6 18.9 2.6 18.9 2.6 18.9 2.6 18.9 ns
DIR to B 2.8 26.6 2.8 24.1 2.4 12.7 2.7 11.4 2.2 9.1 ns
t
PLZ
LOW to OFF-state
propagation delay
DIR to A 2.1 11.6 2.1 11.6 2.1 11.6 2.1 11.6 2.1 11.6 ns
DIR to B 2.2 19.4 2.3 17.6 1.9 10.2 2.4 9.3 2.1 7.4 ns
t
PZH
OFF-statetoHIGH
propagation delay
DIR to A
[1]
- 38.8 - 37.1 - 27.8 - 26.4 - 24.1 ns
DIR to B
[1]
- 32.7 - 31.1 - 21.9 - 19.6 - 19.1 ns