74LVC245A Datasheet, PDF (6/17 Pages) NXP Semiconductors – Octal bus transceiver with direction pin with 5-volt tolerant inputs/outputs 3-State

NXP Semiconductors
74LVC245A; 74LVCH245A
Octal bus transceiver; 3-state
Table 6. Static characteristics …continued
At recommended operating conditions. Voltages are referenced to GND (ground = 0 V).
Symbol Parameter
Conditions
−40 °C to +85 °C
Min Typ^[1] Max
C_I
input capacitance
-
4.0
-
C_I/O
input/output
capacitance
-
10
-
I_BHL
bus hold LOW V_CC = 3.0 V; V_I = 0.8 V
current
[4][5]
75
-
-
I_BHH
bus hold HIGH V_CC = 3.0 V; V_I = 2.0 V
current
[4][5]
−75
-
-
I_BHLO
bus hold LOW V_CC = 3.6 V
overdrive current
[4][6]
500
-
-
I_BHHO
bus hold HIGH V_CC = 3.6 V
overdrive current
[4][6] _−500
-
-
−40 °C to +125 °C Unit
Min
Max
-
- pF
-
- pF
60
- µA
−60
- µA
500
- µA
−500
- µA
[1] All typical values are measured at V_CC = 3.3 V (unless stated otherwise) and T_amb = 25 °C.
[2] The bus hold circuit is switched off when V_I > V_CC allowing 5.5 V on the input terminal.
[3] For I/O ports the parameter I_OZ includes the input leakage current.
[4] Valid for data inputs of bus hold parts only (74LVCH245A). Note that control inputs do not have a bus hold circuit.
[5] The specified sustaining current at the data input holds the input below the specified V_I level.
[6] The specified overdrive current at the data input forces the data input to the opposite input state.
10. Dynamic characteristics
Table 7. Dynamic characteristics
Voltages are referenced to GND (ground = 0 V). For test circuit see Figure 7.
Symbol Parameter Conditions
−40 °C to +85 °C
Min Typ^[2] Max
t_pd
propagation An to Bn; see Figure 5
delay
V_CC = 1.2 V
[1]
-
17.0
-
V_CC = 2.7 V
V_CC = 3.0 V to 3.6 V
t_en
enable time OE to An or Bn; see Figure 6
1.5 3.4 7.3
[3] _{1.5 2.9 6.3}
[1]
V_CC = 1.2 V
-
22.0
-
V_CC = 2.7 V
V_CC = 3.0 V to 3.6 V
t_dis
disable time OE to An or Bn; see Figure 6
1.5 5.0 9.5
[3] _{1.5 4.0 8.5}
[1]
V_CC = 1.2 V
-
12.0
-
t_sk(o)
output skew
time
V_CC = 2.7 V
V_CC = 3.0 V to 3.6 V
1.5 3.6 8.0
[3] _{1.7 3.4 7.0}
[4]
-
-
1.0
−40 °C to +125 °C Unit
Min
Max
-
- ns
1.5
9.5 ns
1.5
8.0 ns
-
- ns
1.5
12.0 ns
1.5
11.0 ns
-
- ns
1.5
10.0 ns
1.7
9.0 ns
-
1.5 ns
74LVC_LVCH245A_5
Product data sheet
Rev. 05 — 25 August 2009
© NXP B.V. 2009. All rights reserved.
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