much ado about the HP/Agilent/Avago/Broadcom
HDSP teeny tiny quad 5x7 LED display module

click here for datasheet: HDSP-23xx Four Character 5.0 mm (0.20 inch) 5 x 7 Alphanumeric Displays and Application Note 1016: Using the HDSP-2000 Alphanumeric Display Family downloaded from http://www.datasheet.hk/view_download.php?id=1223773&file=0103%5Chdsp-2301_1061981.pdf

• 4, 8 characters, X-Y Stackable
• in many colors: red, green, yellow, orange
• parallel or serial interface
• bitmapped, or internal memory with character generator

• use individual BSN20 MOSFETs.
  The problem with transistor arrays is whatever you choose probably won't be available next year.
• Alternatively you could drive them with a shift register or an I/O expander that has some beef behind it.
  Or one of the many LED display drivers from, e.g., Maxim (though they're bad to discontinue things too)

        pinout
1-column 1     data in-12
2-column 2         gnd-11
3-column 3       clock-10
5-column 4         Vcc-9
5-column 5    blanking-8
6-do not use  data out-7

Recommended Operating Conditions (HDSP-2301/-2302/-2303)

Supply Voltage VCC 5.0 V
Column Input Voltage, Column On VCOL 3.5 V
column spply current Icc = 73 (typical) 95 (max) mA for VB = 2.4 V
Data Out Current, Low State IOL 1.6 mA
Data Out Current, High State IOH –0.5 mA

Clock Frequency fclock 3 MHz
Clock Transition Time tTHL 200 ns
Setup Time tsetup 45 ns
Hold Time thold 30 ns
Width of Clock tw(Clock) 75 ns

[for] 32 modules of four digits each,
the transistors must source up to 32 times 410 mA or approximately 13 A.
Darlington PNP power transistors (2N6285) with the proper resistors
have been used to accomplish this task.

page 24 shows 5: TIP 105 PNP darlingtons

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This display module has so many different part numbers!

Application Note 1016: Using the HDSP-2000 Alphanumeric Display Family Table 1. The HDSP-2000 Alphanumeric Display Family
Device	Color	Character Spacing	Character Height	Operating Temperature
HDSP-2000 HDSP-2001 HDSP-2002 HDSP-2003	Red Yellow High Efficiency Red High Performance Green	3.8 mm (0.15 in.)	4.5 mm (0.175 in.)	-20 to +85 °C
HDSP-2010	red	3.8 mm (0.15 in.)	4.5 mm (0.175 in.)	-40 to +85 °C
HDSP-2300 HDSP-2301 HDSP-2302 HDSP-2303	Red Yellow High Efficiency Red High Performance Green	4.9 mm (0.192 in.)	5.0 mm (0.197 in.)	-20 to +85 °C
HDSP-2310 HDSP-2311 HDSP-2312	Red Yellow High Efficiency Red	4.9 mm (0.192 in.)	5.0 mm (0.197 in.)	-55 to +85 °C
HDSP-2450 HDSP-2451 HDSP-2452	Red Yellow High Efficiency Red	6.9 mm (0.27 in.)	8.9 mm (0.35 in.)	-55 to +85 °C
HDSP-2490 HDSP-2491 HDSP-2492 HDSP-2493	Red Yellow High Efficiency Red High Performance Green	6.9 mm (0.27 in.)	8.9 mm (0.35 in.)	-20 to +85 °C

Siemens' version: MSD2000/MSD2300 (mil) and ISD2000/ISD2300 (ind) 0.15" and 0.20"

http://www.decadecounter.com/ seems to be offline
It listed: